Homemade aluminum-air battery I - high power chemicum 2015-04-11 | Simple but powerful battery can be done using some materials from the kitchen: aluminum foil, paper for a membrane, active carbon for an air electrode, and an iron mesh for a current collector. The Al-air battery is more energy dense than a Li-ion battery. In the chemical equation the redox potential should be -2.3 V instead of -1.66 V.This aluminum-air battery was designed by Tavo Romann (PhD). The preparation of the air cathode is described in the new version of aluminum-air battery video: http://youtu.be/fcLZ6dM-qIUThe carbon electrodes can be also obtained from superaccu.com/energystorage.htmlSee also our other electrochemistry experiments:Homemade supercapacitor youtu.be/gTt_YBzJ_DkMicrobial fuel cell youtu.be/_zCsAfEbVRcMaking sodium youtu.be/eGnPQtai0ogla batería de aluminio-aire铝空气电池bateria de alumínio-arалюминиево-воздушной батарееAluminium-Luft-Batteriebatterie aluminium-airbatteria di alluminio-airалюмінієво-повітряної батареїaluminium-õhk patarei
Supercapacitor - how to make, for a greener future chemicum 2021-12-20 | #Ultracapacitor #carbide #sulfate #DIY #acetonitrile #TEMABF4 #activatedCheck out how to make a simple and most advanced supercapacitors or ultracapacitors.Ultracapacitor can turn a metal rod into a glowing sparkle.Aqueous supercapacitors can be made from household materials, using activated carbon from water filter, metal mesh from pan oil splatter and a Tic Tac box.World's best supercapacitors are made of carbide derived carbon, full process is shown here.Animation and working principle of electrical double layer capacitor is explained.Sehen Sie sich an, wie Sie einen einfachen und fortschrittlichsten Superkondensator oder Ultrakondensator herstellen.Vea cómo hacer supercondensadores o ultracondensadores simples y más avanzados.Veja como fazer supercapacitores ou ultracapacitores simples e avançados.Узнайте, как сделать простые и самые современные суперконденсаторы или ультраконденсаторы.Découvrez comment fabriquer des supercondensateurs ou des ultracondensateurs simples et les plus avancés.Sprawdź jak wykonać proste i najbardziej zaawansowane superkondensatory lub ultrakondensatory.간단하고 가장 진보된 슈퍼커패시터 또는 울트라커패시터를 만드는 방법을 확인하십시오.シンプルで最先端のスーパーキャパシターまたはウルトラキャパシターの作り方をご覧ください。 Visit us chemicum.cominstagram.com/superaccu@chemicum
Ionic liquids for energy storage and conversion - DIY chemicum 2021-02-26 | #ionic_liquid #moltensalt #DIY #aluminum-ion #battery #actuator #supercapacitorWe show how to make an ionic liquid from simple components and construct rechargeable aluminum-ion battery. Future artificial muscles could be working with ionic liquids. We make ionic liquid supercapacitor using carbon powder as electrode material. Electrodes are roll-pressed.Synthesis of aluminum chloride - urea and EMIm+ AlCl4- ionic liquids. Other ionic liquids: EMImBF4, EMImTFSI, EMImOtf.There is one mistake - ionic liquids are non-flammable (word inflammable is used in the video). Líquidos iónicos para almacenamiento y conversión de energíaLíquidos Iônicos para armazenamento e conversão de energiaLiquides ioniques pour le stockage et la conversion d'énergieIonische Flüssigkeiten zur Energiespeicherung und -umwandlungLiquidi ionici per lo stoccaggio e la conversione dell'energiaエネルギー貯蔵および変換のためのイオン液体에너지 저장 및 변환을위한 이온 성 액체Ионные жидкости для хранения и преобразования энергииIoonsed vedelikud energia salvestamiseks ja muundamiseks Visit us chemicum.com instagram.com/superaccu @chemicum
Let’s make some fuel cells - PEM and hydrogen tech overview - 8k chemicum 2020-06-17 | #PEM #hydrogen #fuel #cell #drone #Mirai #trolleybus Fuel cell animation. We synthesized platinum nanoparticle-carbon catalyst and made a nafion membrane electrode assembly - MEA. Single cell measurements. Components of a single cell and composing a stack. Testing 1 kW stack. Testing Toyota Mirai, car race. Visiting hydrogen tanking station in Riga, Latvia. Visiting hydrogen drone company Skycorp. Rail Baltic animation. Liquid H2 tank (Tiia Monto)Toyota Mirai hydrogen tank (Mario Roberto Durán Ortiz)Toyota Mirai section video by permission of Toyota Baltic Hydrogen train (FelixM) Hydrogen plane (Adambro)Laboratory shots in University of TartuPEM fuel cell and hydrogen technologiesPEM-Brennstoffzellen- und WasserstofftechnologienPEM kütuseelement ja vesinikutehnoloogiadTigu Diego sõitis tagasi tööle Regiosse.PEM kurināmā elementu un ūdeņraža tehnoloģijasOgniwa paliwowe i technologie wodorowe PEMTecnologías de células de combustible e hidrógeno PEMCélulas de combustível PEM e tecnologias de hidrogênioTecnologie PEM per celle a combustibile e idrogenoTechnologies de pile à combustible PEM et d'hydrogènechemicum.cominstagram.com/superaccu
Chemical Goldberg machine - Mg-air battery experiment proceeds at snails pace chemicum 2020-04-24 | #Magnesium-air #salt-water #battery #Goldberg machineChemical reactions and explosions are used in a chain-reaction to start aDIY magnesium-air battery powered model car. It is shown how a real gas-diffusion cathode works and making a really powerful battery is very easy using only Tic-Tac case, cathode, metal anode, and sodium chloride solution.The magnesium-air battery design won II place in a youth science contest year 2020 by Paul Erik Olli (supervised by Tavo Romann and Eha Paabo).The Snail Diego works in Regio.
Na-ion vs Li-ion battery - Are sodium batteries better and how is sugar involved in this? chemicum 2019-08-27 | There might be not enough lithium for every application so why not make cheaper sodium batteries. Detailed methods are given to make a sodium ion battery and working principle explained.Making spherical carbon particles from sugar:http://jes.ecsdl.org/content/164/9/A1866.shortMaking Na-air full cells:mdpi.com/2313-0105/5/3/56/htm Li-ion battery behaviour at different temperatures:sciencedirect.com/science/article/pii/S2352152X18303694A safe battery idea:sciencedirect.com/science/article/pii/S1388248116302892Na-ion vs Li-ion aku - kas naatriumpatareid on paremad ja kuidas on sellega seotud suhkur ?Na-Ionen vs Li-Ionen-Batterie - sind Natriumbatterien besser und wie ist Zucker daran beteiligt?Na-ion vs Li-ion Battery - ¿Son mejores las baterías de sodio y cómo participa el azúcar en esto?Na-ion vs Li-ion Battery - as baterias de sódio são melhores e como o açúcar está envolvido nisso?Na-Ion против Li-Ion батареи - лучше ли натриевые батареи и как в этом участвует сахар?Na- 이온 대 리튬-이온 배터리-나트륨 배터리가 더 좋고 설탕이 어떻게 관련되어 있습니까?
Green and blue fireballs using copper salts - 8k video chemicum 2018-09-27 | Copper salts usually give green color to a flame, however, it may also be blue. Making of cool green and blue fireballs are shown. This video was shot mostly in 8k (except slow-motions) - good luck finding a suitable video screen. This is a tiny example of "200 experiments in chemistry" atchemicum.cominstagram.com/superaccu8k video camera rental: superaccu.com/rental.htmlGrüne und blaue Feuerbälle mit Kupfersalzen - 8k VideoBolas de fuego verdes y azules con sales de cobre - 8k videoBola de fogo verde e azul usando sais de cobre - vídeo 8kBoules de feu vertes et bleues utilisant des sels de cuivre - vidéo 8kPalle di fuoco verdi e blu usando sali di rame - 8k videoЗеленые и синие огненные шары с использованием солей меди - 8k видео銅塩を使った緑色と青色の火球 - 8kビデオDō shio o tsukatta midoriiro to aoiro no kakyū - 8 k bideo구리 염을 사용하는 녹색과 파란색 불 덩어리 - 8k 비디오guli yeom-eul sayonghaneun nogsaeggwa palansaeg bul deong-eoli - 8k bidio
Solid oxide fuel cell - make electricity from natural gas chemicum 2018-06-19 | A cool self-made SOFC working cell is shown and working principle is explained. It is a potential future energy source to make electricity from natural gas. This process makes no noise at all and is way more efficient than internal combustion or heat engine. Thus, to get rid of your local parasitic electric grid company, you just need solar cells for summer and SOFC with natural gas for winter.More experiments at www.chemicum.com/chemistry-videoswww.instagram.com/superaccuFestoxidbrennstoffzellecélula de combustible de óxido sólidocélula de combustível de óxido sólidopile à combustible à oxyde solidepila a combustibile ad ossido solido固体氧化物燃料电池고체 산화물 연료 전지固体酸化物形燃料電池sel bahan bakar oksida padatfastoxidbränslecelltahkeoksiidkütuseelement
Raman vs infrared spectroscopy chemicum 2017-08-18 | Supercapacitor was analyzed by two methods.Infrared and Raman spectroscopy theory is explained.Inside of FT-IR system and Raman microscope are shown. Molecular vibrations of EMImBF4 ionic liquid, ethanol and CO2 are shown. It was only theoretical spectrum for CO2, actually there are more peaks due to rotational and resonance effects.Check our other videos at http://www.chemicum.com.Porous carbon from sugar - check scientific paper here: http://jes.ecsdl.org/content/164/9/A1866.full.pdf+htmlIn situ infrared measurements in ionic liquids - check paper here: http://www.sciencedirect.com/science/article/pii/S0013468614001455Video supported by University of Tartu ASTRA project PER ASPERA FMTDK.
Mercury - an alien metal chemicum 2017-06-22 | There is alien inside every mercury metal droplet. They just wait for the right moment to conquer world, but Dr Chemicum shows you how to beat them up, make mercury bleeding and finally blow up. Some tricks are shown here how to kill badass mercury terminators or snakes when they have escaped from thermometers. If you see them, contact Dr Chemicum until these aliens are small, before it is too late!Reactions:Aluminum and mercuryHeart beating reactionMercury bleeding reactionMercury hibernation reactionSnake or pharaoh serpentExploding mercury, fulminateMore:Gallium - the terminator metal youtu.be/iPlhdzMKp6Ahttp://www.facebook.com/chemicuminstagram.com/superaccuMercurio escapó del termómetro, pero el doctor Chemicum logró matar al criminal.Mercúrio escapou do termômetro, mas o Dr. Chemicum conseguiu matar o metal criminal.Quecksilber entkam aus dem Thermometer, aber Dr. Chemicum gelang es, das kriminelle Metall zu töten.Elavhõbe põgenes termomeetrist aga Dr Chemicumil õnnestus see kriminaalne element rajalt maha võtta.Mercury s'est échappé du thermomètre, mais le Dr Chemicum a réussi à tuer le métal criminel.Меркурий вырвался из термометра, но д-ру Chemicum удалось убить криминального металла.수은은 온도계에서 빠져 나갔지 만 Chemicum 박사는 그 범죄 금속을 죽였다.水星从温度计逃脱，但Chemicum医生设法杀死了金属犯罪。Lumabas ang Mercury mula sa thermometer, ngunit pinamumunuan ni Dr Chemicum na patayin ang kriminal na metal.水銀が水銀から逃げ出したが、Chemicum博士は犯罪の金属を殺した。Video by Tavo RomannCopyright Supeaccu OÜ.
Permanganate Battery - Lemon Superbattery with RECORD Voltage chemicum 2017-01-06 | Homemade lemon-permanganate battery for days when there is no electricity in the grid, but you need to charge a mobile phone and want light to read a book. http://www.instagram.com/superaccuHomemade battery constructions youtube.com/watch?v=gTt_YBzJ_Dk&list=PL9026GXJCYnEPdTsz2dEKl26w5PC4hZRqOther chemistry videos http://www.chemicum.com/chemistry-videosYou need permanganate (from drugstore, common disinfectant), sodium hydroxide (sewage cleaning liquid), sulfuric acid (from old lead-acid battery), aluminum wire, and inert electrode, such as graphite, carbon fiber rod (from an old drone), or nickel wire. This battery gives 3-times higher voltage and 10-times higher current density than a usual lemon-zinc-copper battery. Can you beat my experiment - it gives a world record cell voltage for a homemade battery (except Li-ion or other non-aqueous batteries that cannot be made at home).Note that a single element with pure Al wire gives upto 3.25 V, when 5 are connected in series, it would give 16V. Household aluminum from the kitchen can be also used, also zinc or magnesium. Prototypes with glass frit or clay membrane (made from bathroom clay plate or clay dish) have longer lifetime and can light bunch of white LEDs for a few days. Video by Tavo Romann, (C) 2017 Superaccu OÜ.Permanganato de batería - Hacer un limón con Superbattery RECORD VoltajeBateria permanganato - Faça um limão com Superbattery REGISTRO VoltagePermanganat-Batterie - Machen Sie eine Zitrone mit Superbattery RECORD SpannungBatterie permanganate - Faire un citron avec Superbattery RECORD TensionPermanganato di batteria - Fare un limone con Superbattery RECORD tensioneПерманганат батареи - Сделать лимон с Superbattery RECORD Напряжение過マンガン電池 - Superbattery RECORD電圧とレモンを作りますPermanganat Baterai - Membuat Lemon dengan Superbattery RECORD Voltage과망간산 배터리 - Superbattery RECORD 전압과 레몬을 확인Permanganaadi patarei - Rekordilise pingega sidruni superpatarei
Microbial fuel cell - DIY Elbonian style chemicum 2016-05-11 | Did you know that a microbial fuel cell can be easily prepared using just a few things from your kitchen. Electrodes were prepared using carbon from water filter, stainless steel mesh, and epoxy glue. Fuel was mixture of mud and waste water. A few MFC elements can light a LED for a very long time (8 month tested so far). The nanoporous electrodes here show much better power performance than graphite felt electrodes used in some MFC constructions. These MFC cathodes can be obtained from superaccu.comHow the electricity is generated?Maximum voltage is up to 930 mV, maximum short-circuit current density is 13 mA. There are two nanoporous carbon electrodes: one is placed at the bottom (anode), the other is placed at the top (cathode). Oxygen can access to the cathode, whereas there is anaerobic (oxygen free) medium around anode, where bacteria work hard. Several bacteria may contribute, for example Escherichia coli can release some compounds through its outer cell membrane, which oxidize at anode. Shewanella putrefaciens and Geobacter may attach onto the carbon and directly give away electrons. Approximate electricity production reaction is the following:cathode: O2 + 4 H+ + 4 e− = 2 H2Oanode (where (CH2O)n is a hydrocarbon): (CH2O)n + n H2O − 4n e− = n CO2↑ + 4n H+ Thanks: all people from Tartu, EUSOmikrobielle Brennstoffzellepile à combustible microbiennepila de combustible microbianaмикробные топливные элементы微生物燃料電池мікробні паливні елементиmikroobne kütuseelement ehk sitapatareicélula combustível microbialSee also our other chemistry experiments at http://www.chemicum.com/chemistry-videos
Al-air battery - car race challenge chemicum 2016-05-11 | It was shown that a homemade battery has enough power to race a car. Take activated carbon from water filter, aluminum foil (shocolate paper, chicken wrap, etc), sewage cleaning liquid (which is 10% NaOH), metal mesh from pan oil catcher, epoxy glue, and tissue paper. To make the electrodes of better quality, some additional tools are needed: roof sheets, grandma’s oven door, hydraulic press of grandpa’s car, kitchen table, metal disks from an athlete.. These electrodes can be obtained from superaccu.com/energystorage.htmlAl-air battery construction is part of science work of Alex Savolainen, supervisor Tavo Romann (PhD). This video was used as an instruction in EUSO 2016 competition. 142 competitiors from 23 countries were racing against each other with identical cars. It was the battery they needed to prepare. The winner of the car race was Bulgaria A team 4.31 sec2. Rumenia A team 5.01 sec3. Sweden B team 5.03 sec4. Germany A team 5.15 sec Thanks: EUSO Estonian teamla batería de aluminio-aire铝空气电池bateria de alumínio-arалюминиево-воздушной батарееAluminium-Luft-Batteriebatterie aluminium-airbatteria di alluminio-airалюмінієво-повітряної батареїaluminium-õhk patarei
Gallium - a terminator metal chemicum 2015-09-11 | A living creature comes out of gallium ... an alien lifeform. This video shows how to fight back when these start coming from the future.Even crazier video "Mercury - an alien metal" youtu.be/Bq1awUmqZcMFollow us here instagram.com/superaccuIonic liquids youtu.be/ARaWq5YMbeYSee our other chemistry experiments at http://www.chemicum.com/chemistry-videosGallium is the terminator metal because it can change shape, form fidget spinner, go through aluminum and form explosive gases. Some tricks with gallium and Galinstan are shown in the video.1) Gallium melts in hot sulpuric acid. It can be collected with a micropipette and small droplets join in a very funny way. 2) Potassium dichromate crystals are added, which makes gallium wobbling due to the formation of insoluble salts on the metal surface. The change of interfacial tension makes gallium change its shape. 3) In the second experiment, hydrogen peroxide is added instead of dichromate and the gallium droplet is touched with an iron wire. Now gallium makes itself as flat as possible and white layer (oxide?, sulphate?) forms at the metal surface. When gallium is heated shortly with a torch, it forms a single droplet and then again makes itself flat. Gas bubbles (probably oxygen) start bubbling through the metal and it becomes a flat white flower.4) Then we prepared galinstan by heating together solid metals gallium (68%), tin (22%) and indium (10%). While gallium melts at 29.8 °C, Galinstan is even liquid at −19 °C. It can be spread onto a glass to make a mirror. Gallium and galinstan form an alloy with aluminum and this alloy reacts with water releasing hydrogen. So it can be used to store energy - aluminium and water on board of a hydrogen fuel cell car can make several times more hydrogen than high pressure hydrogen balloons could possibly accommodate and it is safer as well.2Al(xGa) + 6H2O = 2Al(OH)3 + xGa + 3H2Video by Tavo Romann, music Kaido Viht, Jakob Remmel, Indrek Valge.©Superaccu OÜ. Note that it is not allowed to copy this video to another server without permission, use embed/share function. Gallium - das Terminator Metall鎵 - 終結者金屬gálio - o terminador de metalgalio - el metal terminadorгаллия - металла терминатораgallium - le métal de terminateurgallio - il metallo terminatorगैलियम - टर्मिनेटर धातुالغاليوم - فاصل المعادنガリウム - ターミネータ金属갈륨 - 금속 터미네이터gallium - terminaatori metallGerman subtitles by Robin Ehrminger
Glow-worm chemistry and sex chemicum 2015-06-30 | The common glow-worm was spotted near lake of Peipsi, Estonia in June 25th 2015. Chemiluminescence is a result of oxidation of luciferin by air oxygen, catalysed by enzyme luciferase.Helendavad emased täiskasvanud jaanimardikad, keda kutsutakse ka jaaniussideks. Kuju poolest sarnanevad nad tõesti rohkem ussidele, sest puuduvad tiivad ja kehakuju erineb oluliselt tüüpiliste mardikate omast. Nende tagakehas paiknevad elundid, mis kiirgavad rohekat valgust. Päeval on nad maa sees peidus, kuid tulevad kesköö paiku välja ja panevad helenduselundid tööle, et isaseid meelitada. Helendab aine nimega lutsiferiin, mis aktiveeritakse lutsiferaasi nimelise ensüümi ja õhuhapniku poolt. Helendava sabaga lehvitades õnnestub neil isane jaanimardikas ligi meelitada. Isased on poole lühemad ja tüüpilised tiibadega mardikad. Edasi läheb tuli kustu ja hakatakse uusi mardikaid tegema.Kemoluminesentsi kasutegur võib olla on väga kõrge (valgust eraldub ~98%) ja tegelikult põhinevad orgaanilised valgusdioodid (OLED) ka suhteliselt sarnasel tehnoloogial. Kui toksid oma OLED mobiiliekraani, siis tea, et selle tehnoloogia eeskujuks on olnud jaaniussid ja teised helendavad putukad lõunamaades.luciérnagapirilampo螢火蟲Glühwürmchenver luisantсветлячокkiiltomatoGlow-tārpsJaaniuss
Chemiluminescence experiments chemicum 2015-06-30 | #glowingwater #luminol #glowsstick #cyalumePainfully beautiful examples of glowing chemistry experiments. Luminol was used in three experiments with increasing amount of peroxide. At the end, the reaction mixture was blown out of the bulb.Cyalume light sticks were opened and used in a variety of experiments. The sticks include hydrogen peroxide, diphenyl oxalate, and a dye. Yellow-green color light was obtained with a 1-chloro-9,10-bis(phenylethynyl)anthracene as a dye. Red color was obtained by Rhodamine B.Blue color was obtained by 9,10-diphenylanthracene.Orange color was obtained by 5,12-bis(phenylethynyl) naphthacene. Finally, a common glow-worm was filmed in nature. The yellow-green color of the glow-worm was caused by the oxidation of luciferin. This is one experiment from a larger video collection available at: http://www.chemicum.com/chemistry-videosquimiluminescênciaquimioluminiscencia化學發光Chemilumineszenzchimiluminescencechemiluminescenceхемолюминесценцияkemoluminesents jaaniussi helendamine
Making sodium via electrolysis chemicum 2015-06-02 | Synthesis of sodium was carried out by electrolyzing melted NaOH. Sodium is an active metal and ignites upon contact with water. Larger pieces of Na, when dropped into water, may explode and destroy your camera. NB! Preparing sodium is dangerous, wear safety goggles.More chemistry videos at http://www.chemicum.com/electrochemistry-videos電気分解によるナトリウムの調製通過電解鈉的製備Preparação de sódio por electrólisePreparación de sodio por electrólisisПриготовление натрия путем электролизаHerstellung von Natrium durch ElektrolysePréparation de sodium par électrolysePreparazione di sodio per elettrolisiPrzygotowanie sodu przez elektrolizęNaatriumi valmistamine elektrolüüsil
High voltage graphene supercapacitor chemicum 2015-04-16 | 10 V electrochemical capacitor with graphene electrodes – it is a new type of capacitor. Much faster than supercapacitors and more energy dense than dielectric capacitors. The video describes the method published in Journal of Power Sources http://www.sciencedirect.com/science/article/pii/S037877531500169XDicyanamide-based ionic liquid electropolymerizes at positive voltages, forming a protective dielectric layer on carbon electrodes. Reduced graphene oxide was used as the electrode material.Second paper describes similar effect with tetracyanoborate-based ionic liquids. EMImTCB can be used as a safe supercapacitor/battery electrolyte as overvoltage causes passivation of cathode.http://dx.doi.org/10.1016/j.elecom.2016.11.016A whole new family of nitrile-based dielectric polymers were discovered. google.com/patents/WO2016050761A1?cl=enThe molecular animation can be accessed here (needs flash)http://chemicum.com/zoo/high_voltage_capacitor.htmlgrafeno supercapacitor alta tensión高壓石墨烯超級電容器alta tensão supercapacitor grafenoвысокое напряжение графен суперконденсаторовHochspannungs Superkondensator Graphenhaute tension graphène supercondensateuralta tensione grafene supercondensatoreKõrge pingega grafeenist superkondensaator
Rubidium and water chemicum 2015-03-26 | Rubidium and water were taken together using various ways: running chemist method, dropping hammer method, dropping water method with Rb piece, dropping water method with Rb ampoule, and wet metal rod method. The running chemist method was the most damaging to our clothes and cameras.More chemistry videos: http://www.m.chemicum.comrubidio y aguaRubidium und Wasserrubidium et de l'eau銣和水рубидия и водыrubídio e água
Cesium and water by a bomb unit chemicum 2014-01-04 | We tried to break a 25g cesium (caesium) ampoule in the air, but it started to rain. The bomb group helped us with a detonating cord.This is one experiment from "100+ experiments in chemistry" collection at http://www.chemicum.com/chemistry-videos experiments .tseesium ja vesicesio en el aguacésio em águaCäsium in Wasserцезия в водеcésium dans de l'eautseesiumi reaktsioon veega
Tic-Tac supercapacitor - 800F from the kitchen chemicum 2013-05-10 | The recipe for preparing a home-made supercapacitor is shown here. Newer video is here youtu.be/iQ3njhSnOA0 .Improved versions (shown in the last part of the video) have 800 F of capacitance per single Tic-Tac case, 1.2 V voltage and 6 A of short-circuit current. You need only some chemicals from the kitchen, such as water cleaning filter's active carbon, sewer cleaning liquid (NaOH, but KOH is better), iron mesh, epoxy glue, shade cloth or paper for membrane and an empty Tic-Tac case. It is important to add only small amount of epoxy glue and it works when the size of carbon particles is between 0.2 and 2 mm. Notice that there is a mistake in the video, correct formula is C=time/0.69/R.If you don't want to demolish your kitchen table then the carbon electrodes can be obtained from http://www.superaccu.com .The original version of this video won a Novaator science video contest in Estonia (don't confuse with Elbonia). Designed by Taavi Oja and Tavo Romann (PhD). Check also other DIY batteries and electrochemistry experiments :Aluminum-air battery youtu.be/r-YZeOkllRgMicrobial fuel cell youtu.be/_zCsAfEbVRcMaking sodium metal youtu.be/eGnPQtai0ogDIY supercapacitor Koduse superkondensaatori valmistamine.supercapacitor caserasupercapacitor caseiroсамодельные суперконденсаторовsupercondensateur fait maisonhausgemachten Superkondensatordomowe kondensatorsupercapacitor feito em casa自家製のスーパーキャパシタghar ka bana supairchapachitor
EXPLOSIONS in slow motion chemicum 2011-11-08 | 13 crazy experiments-explosions you shouldn't do at home. Starting with the propane-C3H8 filled balloon explosions. Slow motion reveals that initially there is blue flame which takes quickly yellow color. Secondly, acetylene-C2H2 (prepared by adding calcium carbide to water) flame is black due to unburned carbon particles. Nitrocellulose-C6H7O2(ONO2)3 burning is fast, but small pieces can be safely ignited on palm due to low density of nitrated cotton. Trimethylborate-B(OCH3)3 exploded with green flame. Rubidium-Rb and potassium-K reacted explosively with water. Then came methanol-CH3OH cannon. Aluminium-Al and lead tetroxide-Pb3O4 or simply aluminothermic mixture was ignited with a chemical time fuse. Bomb group was neutralizing solvents that may have had some unstable peroxides formed. They used plastic explosive (contains hexogen-C3H6N6O6, also known as RDX) and a detonating cord. The second explosion was picric acid-C6H3N3O7 and some plastic explosive. The last was a mixture of potassium permanganate-KMnO4 and aluminium-Al. These are some snapshots from "100+ experiments in chemistry" collection and explained videos are available at http://www.chemicum.com/chemistry-videos . Explosiones en cámara lenta, explosões em câmera lenta, explosionen in zeitlupe, explosions au ralenti, взрывы в замедленной съемке, esplosioni, plahvatused aegluubis, paukgaas, keemia.
PYROPHORIC iron self-ignites in the air chemicum 2011-11-04 | Pyrophoric iron was prepared through thermal decomposition of iron(II)oxalate-Fe(COO)2*2H2O. We tested three different methods, but best results were obtained when pure oxygen was blown into the pyrophoric iron filled test tube. This is one experiment from "100+ experiments in chemistry" collection and the fully explained video is available at http://www.chemicum.com .ferro pyrophorichierro pirofóricopyrophoren Eisenfer pyrophoriqueferro piroforicoпирофорнoe железo自燃铁pürofoorne raud
