The chemical reaction at the positive electrode is similar to that of the nickel-cadmium cell (NiCd), with both using nickel oxyhydroxide (NiOOH).
ປະຕິກິລິຍາທາງເຄມີທີ່ electrode ໃນທາງບວກແມ່ນຄ້າຍຄືກັບຈຸລັງ nickel-cadmium (NiCd), ເຊິ່ງທັງສອງໄດ້ໃຊ້ທັງ nickel oxide hydroxide (NiOOH).