...In particular, the relationship between activation overvoltage η and current density j often follows the following equation: η = a + b log | j | ( a and b are constants). This relationship was proposed by J. Tafel (1905) for the overvoltage (hydrogen overvoltage) associated with the electrolytic generation of hydrogen, and is known as Tafel's equation. The hydrogen overvoltage required to generate hydrogen gas by electrolyzing an aqueous solution with metal electrodes increases in the following order: copper (Cu), cadmium (Cd), tin (Sn), lead (Pb), zinc (Zn), and mercury (Hg). ... *Some of the terminology that refers to "Tafel's equation" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…とくに活性化過電圧ηと電流密度jとの関係は次式に従うことが多い。 η=a+blog|j| (a,bは定数)この関係は,水素の電解発生に伴う過電圧(水素過電圧)に対してターフェルJ.Tafelが提出(1905)したもので,ターフェルの式Tafel’s equationとして知られている。水溶液を金属電極で電解して水素ガスを発生させるのに必要な水素過電圧は銅Cu,カドミウムCd,スズSn,鉛Pb,亜鉛Zn,水銀Hgの順に大きくなる。… ※「Tafel's equation」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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