(中南工业大学 化学与化工学院， 长沙 410083)
摘 要: 利用化学镀方法在石墨粉表面镀覆了一层均匀、 完整的金属镍， 研究了镀镍石墨粉电极及镀镍石墨粉作为MH/Ni电池镍电极导电剂时的电化学性质。 实验表明，石墨粉表面镀覆金属镍可增加其电化学活性； 用镀镍石墨粉作为电极导电剂时，可以改善镍电极的导电性能， 降低电池内阻， 提高正极活性物质的利用率，且电池的循环稳定性好， 以1C 倍率充放电循环120次不衰减。
关键字: 化学镀镍； 石墨粉； 电化学性质； MH/Ni电池
coated graphite powder
（School of Chemistry and Chemical Engineering,Central South University of Technology, Changsha 410083, P.R.China）
Abstract:The electrochemical characteristics of nickel electroless plating graphite powder was investigated. Experiments showed that the electrochemical activity of the powder coated with nickel is increased, the resistance of the battery is reduced, the utilization factor of the active materials in the positive electrode is increased and electrochemical cycle performance is improved when the nickelcoated powder is used as the conductive agent of the positive electrode of MH/Ni batteries.
Key words: electroless plating nickel； graphite powder； MH/Ni battery
