A primary battery invented in 1800 by the Italian A. Volta. When zinc and copper are immersed in dilute sulfuric acid and connected with a conductor, the zinc at the cathode dissolves into ions, and hydrogen ions are generated as hydrogen gas at the anode, causing an electric current to flow and forming a battery. The zinc electrode corrodes and dissolves constantly even when not in use, so it is no longer used today, but it made a great contribution to the development of electrochemistry. Volta was inspired by L. Galvani's experiments on electrical phenomena in frog muscles, so it is also called a Galvanic cell. Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
イタリアの A.ボルタにより 1800年に発明された一次電池。亜鉛と銅を希硫酸につけ両者を導線で結ぶと,陰極の亜鉛はイオンとなって溶解し,陽極では水素イオンが水素ガスとして発生し,電流が流れ電池となる。使用しないときでも亜鉛極は絶えず腐食溶解するので,今日では用いられないが,電気化学の発展に大きく寄与した。ボルタはカエルの筋肉についての電気現象に関する L.ガルバーニの実験にヒントを得たので,これをガルバーニ電池ともいう。
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