石墨烯改性钒基储氢电池负极材料的组织与性能研究

胡银全; 伍小兵; 贺晓辉

doi:10.7513/j.issn.1004-7638.2016.02.009

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石墨烯改性钒基储氢电池负极材料的组织与性能研究

doi: 10.7513/j.issn.1004-7638.2016.02.009

重庆工程职业技术学院, 重庆 402260

基金项目:

重庆市高等教育教学改革研究项目(JG142012)；重庆市教委科学技术研究项目资助(KJ1503311)

详细信息

作者简介:
胡银全(1978-),男,重庆人,博士研究生,讲师,主要从事电力电子与电力传动、电池组管理、电池材料研究,E-mail:hyq161@tom.com

中图分类号: TF841.3,TG139⁺.7,TM911
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- 被引次数: 0
出版历程
- 收稿日期: 2015-10-19

Microstructure and Properties of the Vanadium Based Hydrogen Storage Battery Anode Material Modified with Graphene

Chongqing Vocational Institute of Engineering, Chongqing 402260, China

摘要

摘要: 采用球磨后再烧结方法制备出石墨烯改性钒基储氢电池负极材料,并进行材料的物相组成、显微组织、吸放氢性能和循环稳定性的测试与分析。结果表明:该材料由V基固溶体主相、呈三维网状结构分布的TiNi相以及呈弥散状分布的石墨烯组成,具有较佳的吸放氢性能和循环稳定性。与相同方法制备的V₃TiNi_0.56相比,该材料的最大吸氢量增加16.4%,放氢平台压力相当,20次充放电循环后的放电容量衰减率从92.8%减小至6.7%。
- 钒基储氢电池 /
- 负极材料 /
- 石墨烯改性 /
- 吸放氢性能 /
- 循环稳定性
Abstract: The vanadium based hydrogen storage battery anode material modified with graphene was prepared by the method of sintering after ball milling,and the phase composition,microstructure,hydrogen absorption and desorption properties,and cycling stability of the anode material were tested and analyzed.The results show that the material is composed of vanadium-based solid solution as main phase,Ti Ni phase with three-dimensional network structure and graphene with diffuse distribution,having better hydrogen absorption and desorption properties and cycling stability.Compared with V₃TiNi_0.56 prepared by the same method,the maximum hydrogen adsorption of this material could increase by 16.4% with comparative hydrogen platform pressure and its decay rate of discharge capacity after 20 times of charge and discharge cycles could decrease from 92.8% to 6.7%.
- vanadium based hydrogen storage battery /
- anode material /
- modification with graphene /
- hydrogen absorption and desorption properties /
- cycling stability