one of the electrodes in a piece of electrical equipment. The cathode is the positive electrode in a battery and the negative electrode in an electrolytic cell. The electrode is negatively charged.
正极 - 中文(简体)–英语词典翻译——剑桥词典 one of the electrodes in a piece of electrical equipment. The anode is the negative electrode in a battery and the positive electrode in an electrolytic cell.