Structural and Electrochemical Properties of High-Capacity Ml-Mg-Ni Based Hydrogen Storage Alloys

韩树民 1; 2; 李媛 1; 张忠 2; 朱惜林 1; 李金华 2; 扈琳 1

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Structural and Electrochemical Properties of High-Capacity Ml-Mg-Ni Based Hydrogen Storage Alloys

更新时间：2025-12-08

- Structural and Electrochemical Properties of High-Capacity Ml-Mg-Ni Based Hydrogen Storage Alloys
- Vol. 42, Issue 3, Pages: 377-380(2008)
- 作者机构：
  
  1. 燕山大学环境与化学工程学院,秦皇岛,066004
  2. 燕山大学亚稳材料制备技术与科学国家重点实验室,秦皇岛,066004
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM912.9
- Online First：10 March 2008，
  
  Published：2008
- 稿件说明：
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韩树民 1, 2, 李媛 1, et al. Structural and Electrochemical Properties of High-Capacity Ml-Mg-Ni Based Hydrogen Storage Alloys[J]. 2008, 42(3): 377-380.
DOI：

韩树民 1, 2, 李媛 1, et al. Structural and Electrochemical Properties of High-Capacity Ml-Mg-Ni Based Hydrogen Storage Alloys[J]. 2008, 42(3): 377-380. DOI：

摘要

通过感应熔炼方法制备了稀土-镁-镍基储氢合金Ml

0.88

0.12

3.0

0.10

0.55

0.10

(Ml代表富镧混合稀土).采用XRD和SEM分析了合金的微观结构

发现该合金主要由CaCu

型相、Ce

型相和Pr

型相组成.电化学测试结果表明:合金的放电容量可以达到386 mA·h/g

比商品AB

型合金(332 mA·h/g)高出16.3%; 在1 100 mA/g的放电电流密度下

合金的高倍率放电性能可以达到62%

高于商品AB

型合金(45%); 充放电循环300次后

合金的放电容量降低到315 mA·h/g

为最大放电容量的81.5%.

Abstract

The rare earth-Mg-Ni-based hydrogen storage alloy Ml

0.88

0.12

3.0

0.10

0.55

0.10

(Ml=La-rich mishmetal)was prepared by inductive melting. The micro-structure was analyzed by XRD and SEM. The alloy consists primarily of CaCu

-type phase

-type phase and Pr

-type phase. The electrochemical measurements show that the maximum discharge capacity reaches to 386 mA·h/g

16.3% higher than that of the commercial AB

-type alloy(332 mA·h/g). For the discharge current density of 1 100 mA/g

the higher

rate discharge ability gets 62%

while that of the commercial AB

-type alloy is only 45%. The discharge capacity decreases to 315 mA·h/g after 300th cycle

81.5% of the maximum discharge capacity.

关键词

Keywords

references

PAN Hongge, MA Jianxin, WANG Chunsheng, et al. Effects of substitution with foreign metals on the crystallographic, thermodynamic and electrochemical properties of AB5-type hydrogen storage alloys [J]. Electrochim Acta, 1996, 41(1): 117-121

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