采用化学共沉淀法制备了镍铝和钴铝2种层状氢氧化物[ Ni4Al(OH)10]OH和[Co4Al(OH)10]NO3.将前者作为电极活性材料,后者及石墨作为正极导电添加剂,通过单纯形重心设计研究了正极中3种物质的最佳配比,使其大电流充放电性能得到有效地提高.结果表明,电极的性能与电极配方密切相关.当[ Ni4Al(OH)10]OH、[ Co4Al(OH)10]NO3和石墨的质量分数分别为64.45％、12.27％和23.28％时,电极在经过800 mA/g 200次充放电后的放电比容量最高,为270.5 mA· h/g(最大值的88.7％)；[Co4Al(OH)10]NO3的加入使电极的放电比容量和循环寿命得到了显著的提高.
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