东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2003, Vol. 24 ›› Issue (1): 79-82.DOI: -

• 论著 • 上一篇    下一篇

锆基纳米复合储氢材料HTQAB_(2.1)/Mg的微结构与电化学性能

陈东;马常祥;陈廉;陈德敏   

  1. 东北大学理学院 ; 东北大学理学院 ; 中国科学院金属研究所 ; 中国科学院金属研究所 辽宁沈阳　110004
  • 收稿日期:2013-06-23 修回日期:2013-06-23 出版日期:2003-01-15 发布日期:2013-06-23
  • 通讯作者: Chen, D.
  • 作者简介:-
  • 基金资助:
    国家"八六三"高技术计划资助项目(715 004 0233);;国家重点基础研究发展规划项目(G2000026403)·

Microstructure and electrochemical performance of HTQAB2.1/ Mg Zr-based nanocomposite hydrogen storage materials

Chen, Dong (1); Ma, Chang-Xiang (1); Chen, Lian (2); Chen, De-Min (2)   

  1. (1) Sch. of Sci., Northeastern Univ., Shenyang 110004, China; (2) Inst. of Metal Res., Chinese Acad. of Sci., Shenyang 110016, China
  • Received:2013-06-23 Revised:2013-06-23 Online:2003-01-15 Published:2013-06-23
  • Contact: Chen, D.
  • About author:-
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摘要： 采用球磨复合+烧结处理(BMS)及机械复合+烧结处理(MMS)两种方法制备了Zr0.9Ti0.1(Ni0.57V0.10Mn0.28Co0.05)2.1 X%Mg(X=10,20)锆基纳米复合储氢材料·经XRD、TEM SAED分析表明,BMS和MMS的复合储氢材料皆由MgCu2型立方结构的单一C15 Laves相Zr基合金和密排六方结构的Mg金属构成,未发现两者之间的合金化效应·电化学测试表明,在60mA/g电流密度下,复合材料(MMS、BMS)活化性能好·MMS电极的最大放电容量为410mAh/g(X=20),而BMS的放电容量为360mAh/g(X=20)·在大电流密度下(≥3000mA...

关键词: 锆基纳米复合材料, HTQAB2.1/Mg, 球磨复合, 烧结处理, 微结构, 电化学性能

Abstract: The Zr-based nanocomposite hydrogen storage materials Zr0.9Ti0.1 (Ni0.55V0.12Mn0.28 Co0.05)2.1-X% Mg (X=10, 20) were prepared by two ways: ball-milling + sintering treatment (BMS) and mechanical alloying + sintering treatment (MMS). XRD and TEM-SAED examinations show that microstructure of the materials is composed of MgCu5-type cubic structure C15-Laves phase and hexagonal structure Mg. Their electrochemical performance tests show that the composite electrodes (MMS, BMS) have good activation properties at 60 mA/g current density. The maximum discharge capacity of MMS electrodes is 410 mAh/g(x = 20), while BMS electrodes is 360 mAh/g (x=20). At high current density(≥3000 mA/g), the discharge capacity of BMS electrodes is obviously higher than those of the MMS electrodes. The BMS(HTQAB2.1-10% Mg) electrode shows the best current density discharge performance. Therefore, HTQAB2.1 type Zr-based nanocomposite materials are suitable for not only high-energy NiMH batteries but also high-power NiMH batteries.

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