noun
positive electrode; anode
Technical term used in electronics and electrochemistry. In a battery, it is the electrode where current flows in from the external circuit during discharge.
電池の正電極にはプラス記号が付いている。
The positive electrode of the battery is marked with a plus sign.
Anode; often used interchangeably with 正電極 in batteries, but in electrolytic cells the anode is the positive electrode, while in galvanic cells it is the negative electrode. 正電極 is unambiguous.
Compound of 正 (positive) + 電極 (electrode). A straightforward technical term.