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中文摘要：
研究了球磨时间对La2Mg17＋200％M（M=Cu、Ni）＋1％CeO复合贮氢材料的影响。XRD和SEM分析表明：材料的非晶相随球磨时间的延长而增加。电化学测试显示：当球磨时间从10h延长到40h时，加Cu、Ni材料在30h时分别有最大放电比容量134．0mAh／g934．3mAh／g；材料的放电电压特性得到了改善；当球磨时间为10h、30h时，加Cu材料的高倍率放电性能（HRD）在400mA／g时分别为59．3％、68．8％，加Ni材料的HRD分别为64．9％、81．0％。
英文摘要：
The effects of ball-milling time on La2Mg17 ＋ 200%M（ M = Cu, Ni） ＋ 1% CeO composite hydrogen storage materials were studied. XRD and SEM analyses showed that the amorphous phase in the materials increased with the prolonging of ballmiUing time. Electrochemical tests indicated that when baU-milling time prolonged from 10 h to 40 h, the maximum specific discharge capacities of the materials adding Cu and Ni were 134.0 mAh/g and 934.3 mAh/g at 30 h, respectively. The discharge potential characteristics of the materials were improved. The high rate discharge ability（ HRD）of the materials adding Cu at 400 mA/g was 59.3% and 68.8% when ball-milling time was 10 h and 30 h,respectively,the HRD of the materials adding Ni was 64.9% and 81.0%, respectively.
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