(1.中國(guó)科學(xué)院 金屬研究所，沈陽 110016；
2. 東北大學(xué) 材料與冶金學(xué)院， 沈陽 110004)
摘 要: 研究了粉末粒度對(duì)AB5型儲(chǔ)氫合金電化學(xué)性能的影響。結(jié)果表明：當(dāng)合金粉末粒度為22.49～163.8μm時(shí)，隨粉末粒度的減小，儲(chǔ) 氫合金電極的電化學(xué)容量降低；由于粉末粒度大的電極負(fù)極充放電循環(huán)壽命的衰減率小于粉末粒度小的衰減率，所以隨粉末粒度的減小，儲(chǔ)氫合金電極材料充放電循環(huán)壽命縮短。
關(guān)鍵字: 粉末粒度；合金電極；電化學(xué)容量；循環(huán)壽命
performance for AB5 hydrogen
storage alloys
（1. Institute of Metals Research, The Chinese Academy of Sciences,
Shenyang 110016, China;
2. School of Materials and Metallurgy, Northeast University,
Shenyang 110004, China）
Abstract:Effect of the powder size on electrochemistry performance for AB5 hydrogen storage alloy was studied. The result shows that t he electrochemistry capacity of hydrogen storage alloy electrode reduces with reducing powder size. The chargedischarge cycling life of hydrogen storage alloy electrode curtails with reducing the powder size because attenuation rate for t he charge-discharge cycling life of the bigger powder size is less than that of the smaller one.
Key words: powder size; alloy electrode; electrochemistry capacity; cycling life
