摘要
当Zn—Cu伏打电池处于缓慢、均匀稳定的放电状态时,Joule热电阻不等于Ohmic电阻R。从能量上来考虑,电池中不仅电能转化成热量,化学能也转化成热量。涉及由电能I所带的离子,而R则涉及电解质中所有离子。
During the stow and steady discharge of a Zu--Cu cell with current I carded and spherical electrodes, the Ohmic resistance R = △V/I across the electrolyte differs from the Joule heating resistance RJ = Q/I^2 .Not only electrical energy, but also chemical energy, is converted to heat in this ceil. RJ involves only the currentcarrying ions, whereas R involves all of the ions.
