摘要
介绍了高倍率Ｓｃ型ＭＨ－Ｎｉ电池的研制情况。该电池正负极均采用泡沫式涂浆工艺制作而成。对极板的制作、电池的集流及化成条件等进行了探讨，对电池的电化学性能进行了测试。结果显示，在镍电极中加入适量Ｃｏ和Ｚｎ的氧化物，可有效地提高活性物质利用率，使正负极板的体积比容量分别达到５２０ｍＡｈ／ｃｍ３和１１００ｍＡｈ／ｃｍ３以上；将原有的单极耳改为多极耳集流，提高了电池的高倍率放电性能；将活化温度控制在３０℃～５０℃，可使电池在３周期～４周期内达到完全活化。研制出的Ｓｃ型ＭＨ－Ｎｉ电池具有２５００ｍＡｈ以上的容量，可进行１Ｃ率快速充电，１２Ａ放电时１．１Ｖ以上容量占６０％以上。
R&D of high rate Sc Ni MH battery with pasted foamed nickel MH electrode and Ni elctrode is introduced in this paper. The manufacture of electrodes, the current collector and the formation condition of the battery were discussed and the electrochemical performances were also tested. The results show that, the utilization of the active material is effectively enhanced by adding oxides of Co and Zn into the Ni electrode. The specific capacity in volume of the positive and negative electrodes exceeds 520mAh/cm 3 and 1100mAh/cm 3 respectively. The performance of high rate discharge was improved through changing the uniterminal to multi terminal to accumulate current. The battery can be activiated completely in 3～4 cycles by controlling the temperature at 30℃～50℃. The battery developed has capacity of more than 2500mAh and can be charged at 1C rate. The capacity is more than 60% of the total at 12A while output voltage is above 1.1V.
出处
《电源技术》
CAS
CSCD
北大核心
1999年第3期161-163,173,共4页
Chinese Journal of Power Sources
关键词
MH-NI电池
涂浆工艺
镍电极
金属氢化物
Ni MH battery, pasting technology, hydrogen storage alloy, nickel electrode
