【作者】 陈玉安； 唐体春； 傅洁； 潘复生； 邓世平； 李家鸣； 赵光明；

【Author】 CHEN Yu’an~1 TANG Tichun~1 FU Jie~1 PAN Fusheng~1 DENG Shiping~2 LI Jiaming~2 ZHAO Guangming~2 (1 College of Materials Science and Engineering,Chongqing University,Chongqing 400044;2 Chongqing Instrument Materials Research Institute,Chongqing 400700)

【机构】 重庆大学材料科学与工程学院； 重庆仪表材料研究所；

【摘要】 采用两步法（球磨+烧结）,制备了 Mg_2-xAl_xNi（x=0、0．1、0．3）合金,研究了 Al 对 Mg₂Ni 合金储氢性能的影响。XRD 和 SEM 研究表明 Al 的加入使合金中产生了 Mg₃AlNi₂新相。利用 PCT 测试仪测定了合金的储氢性能,结果表明:添加 Al 元素会降低合金的吸氢量,但能有效地提高放电容量和循环稳定性。制备出的 Mg_1．9Al_0．1Ni 和 Mg_1．7Al_0．3Ni 相比,前者具有较大的吸氢量,后者的放电容量较大,循环稳定性较好。更多还原

【Abstract】 The Mg based hydrogen storage alloys Mg_2-x Al_x Ni（x=0,0.1,0.3）are successfully prepared by two step method（engine activation and sinter in solid）.Effect of A1 addition on hydrogenation of Mg₂ Ni is studied. The XRD and SEM results showed that a new phase of Mg₃ AlNi₂ is found in the alloys.It also can be observed by PCT results that the absorption capacity debased and the discharge capacity and cycle stabilities improved by adding Al. Compare Mg_1.9 Al_0.1 Ni with Mg_1.7Al_0.3 Ni,the former has better absorption capacity,the latter has better discharge ca- pacity and better cycle stability.更多还原