# 电池内的电流是逆向流动的吗？

2015年 11月 25日

### 放电过程中的电势

$\mathrm{Me}\xrightarrow[\mathrm{Oxidation}]{}\mathrm{Me}^+ + \mathrm{e}^-$

$\mathrm{H}^+ + \mathrm{e}^-\xrightarrow[\mathrm{Reduction}]{}\mathrm{H(ads)}$

### 电荷转移反应，电荷转移电流和超电势

$\eta = \Delta \phi – \Delta {\phi _\mathrm{eq}}$

### 为电池充电

$\mathrm{Me}+\mathrm{e}^- \xrightarrow[\mathrm{Reduction}]{} \mathrm{Me}$

$\mathrm{OH}^- \xrightarrow[\mathrm{Oxidation}]{}\mathrm{OH(ads)}+\mathrm{e}^-$

### 扩展阅读

#### 评论 (4)

2021-06-09

##### Ed Fontes
2021-06-09 COMSOL 员工

Dear Izawa Liu,
Yes it does. This is included in the expression for the electrode kinetics (figure 9). The overpotential is the difference in potential over the charged double layer at equilibrium and when there is a net charge transfer. The two potentials used are the local electronic potential and the local ionic potential at the reacting site. In porous electrode theory, the difference between these two potential is the potential difference over the charged double layer.
Best regards,
Ed

2022-06-14

##### yongchao wang
2022-06-30 COMSOL 员工