甘肃冶金
甘肅冶金
감숙야금
GANSU METALLURGY
2015年
2期
89-92
,共4页
多元替代%单元替代%储氢合金%电化学性能
多元替代%單元替代%儲氫閤金%電化學性能
다원체대%단원체대%저경합금%전화학성능
multi-elements substitute%single substitute%hydrogen storage alloy%electrochemical performance
本文采用Co、Mn、Cu同时替代LaMg2 Ni9中的Ni，并且与Cu单独替代时合金的电化学性能进行了比较，实验结果表明，与单元替代相比，多元替代有着较高的放电容量和较好的活化性能，但是其循环稳定性较差，文章系统的分析了产生此种现象的原因。此外，通过对综合性能最佳的合金LaMg2 Ni2．7 Co2．1 Mn2．7 Cu1．5进行X衍射分析，从微观角度进一步研究了储氢合金成分对合金电化学性能的影响，认为La4 Co3和MgCoCu0．9 Ni0．1可能是提高合金的最大放电容量的原因。
本文採用Co、Mn、Cu同時替代LaMg2 Ni9中的Ni，併且與Cu單獨替代時閤金的電化學性能進行瞭比較，實驗結果錶明，與單元替代相比，多元替代有著較高的放電容量和較好的活化性能，但是其循環穩定性較差，文章繫統的分析瞭產生此種現象的原因。此外，通過對綜閤性能最佳的閤金LaMg2 Ni2．7 Co2．1 Mn2．7 Cu1．5進行X衍射分析，從微觀角度進一步研究瞭儲氫閤金成分對閤金電化學性能的影響，認為La4 Co3和MgCoCu0．9 Ni0．1可能是提高閤金的最大放電容量的原因。
본문채용Co、Mn、Cu동시체대LaMg2 Ni9중적Ni，병차여Cu단독체대시합금적전화학성능진행료비교，실험결과표명，여단원체대상비，다원체대유착교고적방전용량화교호적활화성능，단시기순배은정성교차，문장계통적분석료산생차충현상적원인。차외，통과대종합성능최가적합금LaMg2 Ni2．7 Co2．1 Mn2．7 Cu1．5진행X연사분석，종미관각도진일보연구료저경합금성분대합금전화학성능적영향，인위La4 Co3화MgCoCu0．9 Ni0．1가능시제고합금적최대방전용량적원인。
In this paper, Ni in LaMg2 Ni9 substituted by Co, Mn, Cu was studied, and the substituted by Cu singly was study at the same time.The difference of electrochemical performance between the two ways on substitution was obviously. The results showed that multi-elements substitute had better maximum discharge capacity and activation properties, but its discharge capacity decay rate was worse.Analyzed reasons for this phenomenon in detail was studied.Besides that, LaMg2 Ni2.7 Co2.1 Mn2.7 Cu1.5 as the best alloy above all was studied by XRD, that the effects of alloy composition on electrochemical performance were studied fatherly from microscopic view.Study suggests that La4 Co3 and MgCoCu0.9 Ni0.1 maybe the reason for the better maximum discharge capacity.
