采用沉淀转化法制备掺杂Co的纳米Ni(OH)2,利用XRD和TEM分析材料的结构和微观形貌,利用循环伏安技术和恒流充放电技术研究材料的电化学性能尤其是高倍率放电性能.结果表明:掺杂Co后,纳米Ni(OH)2仍为β晶型,但其结晶度和颗粒形状均发生变化,颗粒的团聚变得明显,同时材料的晶格参数c和材料质子扩散系数D随着掺杂量的增大呈先增大再减小的趋势;当Co掺杂量为5%(质量分数)时,材料的c值最大,质子扩散系数D也最大,达到3.127×10-10 cm2/s,0.2C放电比容量达到312 mA·h/g,1C和5C放电比容量分别比未掺杂材料的提高7%和10%.
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