活 性物质 为化学共 沉积锌的 Ｎｉ（ Ｏ Ｈ） ２ ，并 物理 掺杂 钴粉 的泡 沫镍 涂 膏式 镍电 极 表现出高的 放电比 容量和循 环稳定性 ，其中 钴 可以 显著 提 高镍 电 极活 性物 质 利用 率， 这是 由于 第 一次活化充 电时由 Ｃｏ 形 成导电 性能良好 的 Ｃｏ Ｏ Ｏ Ｈ 提高了放 电深度， 循环过程 中的容量 稳定 性是 锌和钴协同 作用的 结果，特别 是共沉 积锌，它可 以抑制 γ＿ Ｎｉ Ｏ Ｏ Ｈ 的形成 从而缓 解镍电极 的膨胀 ．
The Ni_foam pasted nickel electrodes prepared by coprecipitated Ni 1_X Zn X(OH) 2 with and without cobalt power addition have been studied. The electrode with addition of metallic cobalt showed a higher performance both in discharge capacity and cycle life.It is known from the experiment results that the addition of Co can remarkably increase the active material utilization which is suggested to be improvement of discharge depth due to the conducting CoOOH formed in the first activation charging.The superior capacity during cycling could be attributed to the synergistic action of zinc and cobalt addition,especially to the coprecipitatation of zinc hydroxide which is suggested to be the inhibition of γ_NiOOH formation.
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