## Wikipedia - Charge transfer coefficient (en) Wikipedia - Partial current (en) Wikipedia - ضریب انتقال بار (fa) partial anodic (cathodic) current

https://doi.org/10.1351/goldbook.P04407
When a single electrochemical reaction occurs at an electrode (i.e. all other electrochemical reactions may be neglected): $I=I_{\text{a}}+I_{\text{c}}$ where $$I$$ is the total current, $$I_{\text{a}}$$ is the positive partial anodic current and $$I_{\text{c}}$$ is the negative partial cathodic current. When more than one reaction is significant the reactions may be numbered and the numbers used as subscripts: $$I_{\text{1,a}}$$, $$I_{\text{1,c}}$$, $$I_{\text{2,a}}$$, etc. Then: $I=\sum I_{i,\text{a}}+\sum I_{i,\text{c}}$
Source:
PAC, 1974, 37, 499. (Electrochemical nomenclature) on page 512 [Terms] [Paper]