Tiān-ke̍k

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()電池 (tiān-tî) (tiong)電極 (tiān-ke̍k) (電極) ()電解質 (tiān-kái-chit)溶液 (iông-e̍k)發生 (hoat-seng)酸化 (sng-hòa)還原 (hoân-goân)反應 (hoán-èng) (ê)所在 (só͘-chāi)。電極 (ū) (pun) (chò)正極 (chiàⁿ-ke̍k) (kap)負極 (hū-ke̍k),正極是電位 (tiān-ūi) (khah) (koân) (hit) (pêng),負極是電位較 ()的彼爿。一般 (It-poaⁿ) (chiàⁿ)ke̍k是陰極 (im-ke̍k)得著 (tit-tio̍h)電子 (tiān-chú),發生還原反應; ()ke̍k是陽極 (iông-ke̍k)失去 (sit-khì)電子發生酸化反應。電極 (thang)金屬 (kim-sio̍k)抑是 (ia̍h-sī)非金屬 (hui-kim-sio̍k)只要 (chí-iàu)會當 (ē-tàng) (hām)電解質溶液交換 (kau-ōaⁿ)電子, (tio̍h)是電極。