La2Mg17-xNix储氢合金的相结构和电化学性能
he phase structures and electrochemical properties of La2Mg17-xNix alloys
La2Mg17-xNix (x=11, 13, 15)合金的相结构和电化学性能，研究表明，La2Mg17-xNix (x＝11, 13, 15)系列合金中未出现La2Mg17相，而是由LaMgNi4、Mg2Ni、(La, Mg)Ni3和LaNi5等多相组成，并且富Ni相LaNi5的含量随着Ni替代量的增加而逐渐增多；电化学测试表明，所有合金只需2～3次充放电循环即可活化，La2Mg4Ni13合金的电化学性能最好，不仅具有最高的放电容量（161 mAh/g），而且循环稳定性最好。
Phase structures and electrochemical properties of La2Mg17-xNix (x=11, 13, 15) alloys were investigated. The results show that the La2Mg17 phase did not exist in the La2Mg17-xNix (x=11, 13, 15) alloys, which consisted of multiples such as LaMgNi4, Mg2Ni, (La, Mg)Ni3, LaNi5 and so on. The abundance of the Ni-rich phases LaNi5 increased with the increase of Ni content. The electrochemical measurements showed that all the alloys could be easily activated to reach the maximum discharge capacity only after two or three charge and discharge cycles. When x=13, the electrochemical capacity (161 mAh/g) and cycle stability were the best in the series of alloys.
王常春、沈欣
氢能、氢能利用
储氢合金相结构XRD电化学学
Hydrogen storage alloysPhase structuresXRDElectrochemical properties
王常春,沈欣.La2Mg17-xNix储氢合金的相结构和电化学性能[EB/OL].(2012-06-08)[2025-08-16].http://www.paper.edu.cn/releasepaper/content/201206-156.点此复制
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