摘要
在空气中用机械合金化制备了Mg2Ni贮氢合金,并用XRD、SEM、TEM和充放电测试等研究了合金的组成、结构和电化学性能。在非真空和没有保护气的条件下球磨,得到的Mg2Ni贮氢合金具有良好的活化性能及较高的贮氢容量。随着球磨时间的增加,容量也相应增加,当球磨30 h时,合金容量可达482.75 mAh/g,但在碱液中的氧化、腐蚀,使其容量衰退很快,循环稳定性不理想。
Mg2Ni hydrogen storage alloy was synthesized by mechanical alloying in air. Its component, structure and electrochemical performance were studied by XRD, SEM, TEM and charge-discharge tests. Mg2Ni hydrogen storage alloy had good activation performance and high hydrogen storage capacity by ball milling with the environment of non-vacuum and no protecting gas. The capacity increased with the increasing of ball milling time. When the ball milling time was 30 h, the capacity of the alloy could reach to 482.75 mAh/g, but its capacity dropped quickly for the reason of oxidation and corrosion in the alkaline liquor, the cycle stability was not ideal.
出处
《电池》
CAS
CSCD
北大核心
2006年第3期170-172,共3页
Battery Bimonthly
基金
国家自然科学基金资助项目(50071050)
国家自然科学基金重点项目(50131040)
内蒙古科技计划项目(20050205)
内蒙古自治区高等学校科学研究项目(BH05064)
关键词
镁基贮氢合金
机械合金化
电化学性能
Mg-based hydrogen storage alloy
mechanical alloying
electrochemical performance
