电沉积氧化铈对烧结镍电极性能的影响  

Effects of Electrochemically Pre-Deposition of Cerium-Oxides on Sintered Nickel Electrode

作　　者：罗萍[1] 闫慧青[1] 鲁文东[2] 李会娟[2] 呙成[2] 周德瑞[3] 

机构地区：[1]河北工业大学应用化学系,天津300130 [2]中国电子科技集团公司第十八研究所,天津300381 [3]哈尔滨工业大学应用化学系,黑龙江哈尔滨150001

出　　处：《中国稀土学报》2007年第4期442-447,共6页Journal of the Chinese Society of Rare Earths

摘　　要：在烧结镍基体表面,预先电沉积一层氧化铈,通过电化浸渍得到镍电极,研究了预先电沉积氧化铈对烧结镍电极性能的影响。结果表明:与空白烧结镍电极相比,预先电沉积氧化铈(+4),改善了烧结镍电极的大电流充放电性能和循环性能,增加了电极的可逆性,提高了电极的充电接受能力和活性物质利用率,减少了电极膨胀率,且当氧化铈的预先电沉积量为5%时,烧结镍电极的电极性能处于最佳。Cerium-oxides（ ＋ 4）was electrochemically pre-deposited on the sinter nickel substrate firstly. Then it was filled with nickel-hydroxide active material by electrochemical impregnation. Effect of deposition layer cerium-oxides（ ＋ 4） on sintered nickel electrode was studied. The results indicated that these electro- des prepared by the pre-deposition method had high charge-discharge capability, high active material utilization, low electrode swelling ratio and excellent cycle performance. The CV tests showed that pre-deposition of cerium-oxides also increased electrode reversibility. The electrode with 5 % （by weight） cerium-oxides predeposited had the optimum performance.

关 键 词：烧结镍电极 氧化铈 预先电沉积 循环寿命 稀土 

分 类 号：TM912.2[电气工程—电力电子与电力传动] O614.33[理学—无机化学]