###
DOI:
有色金属工程:2020,(10):7-15
←前一篇   |   后一篇→
本文二维码信息
码上扫一扫!
机械合金化法制备非晶Nb60TM40-MgH2(TM=Ni,Fe)复合储氢材料的吸放氢性能
董金剑, 张秋雨, 邹建新, 丁文江
(上海交通大学)
Hydrogen Storage Properties of Amorphous Nb60TM40-MgH2 (TM=Ni, Fe) Composites Prepared by Mechanical Alloying
Dong Jinjian, ZHANG Qiuyu, Zou Jianxin, Ding Wenjiang
(Shanghai Jiao Tong University)
摘要
图/表
参考文献
相似文献
本文已被:浏览 348次   下载 267
投稿时间:2020-01-13    修订日期:2020-01-16
中文摘要: 采用机械合金化法制备了Nb60Ni40及Nb60Fe40非晶合金,再通过球磨法向MgH2中分别掺杂10%上述非晶,并利用XRD、SEM、P-C-T、DSC等分析测试手段对样品的微观结构及吸放氢性能进行了表征。XRD结果表明,通过机械合金化法得到了Nb-Ni和Nb-Fe非晶。SEM观察显示,掺杂非晶后,MgH2粉末颗粒得到了细化。P-C-T测试结果表明,非晶Nb60Ni40及Nb60Fe40的掺杂未改善MgH2的吸放氢热力学性能,但非晶Nb60Ni40-MgH2及非晶Nb60Fe40-MgH2复合粉体的吸氢速率有一定的提升;放氢动力学测试表明,非晶掺杂加快了MgH2的放氢速率,350 ℃下10 min即可实现完全放氢。DSC测试结果显示,非晶Nb60Ni40-MgH2体系和非晶Nb60Fe40-MgH2体系的放氢激活能分别为146.14和145.65 kJ/mol,与纯MgH2相比分别降低了22.68和23.17 kJ/mol。
中文关键词: 储氢材料  MgH2  非晶  机械合金化
Abstract:In the research, amorphous alloysincludingNb60Ni40 and Nb60Fe40 were synthesized by mechanical alloying, and were doped into MgH2with 10% through ball milling. XRD, SEM, P-C-T, and DSC tests were carried out to investigate microstructure and hydrogen storage properties of the composites. XRD patterns indicated that Nb-Ni and Nb-Fe powders obtained from mechanical alloying werein amorphous state. SEM observations showed that the size of MgH2 particles were refined after doping with amorphous. The addition of amorphous alloys Nb60Ni40 and Nb60Fe40 did not change thermodynamic properties but enhanced the hydrogenation kinetics of Mg. With the addition of amorphous Nb60Ni40 and Nb60Fe40, the dehydriding activation energy of MgH2 was reduced to 146.14and 145.65 kJ/mol,about 22.68 and 23.17 kJ/mol lower than that of the pure MgH2, respectively. Besides, full dehydrogenation can be achieved within 10 mins at 350 ℃.
文章编号:     中图分类号:TK91    文献标志码:
基金项目:国家自然科学基金资助项目(51771112);上海市科学技术委员会资助项目(19511108100);上海市教委“曙光计划”项目(16SG08)
引用文本:
董金剑,张秋雨,邹建新,丁文江.机械合金化法制备非晶Nb60TM40-MgH2(TM=Ni,Fe)复合储氢材料的吸放氢性能[J].有色金属工程,2020,(10):7-15.

我们一直在努力打
造,精品期刊,传
播学术成果

全国咨询服务热线
86-10-63299224

杂志信息

期刊简介

相关下载

联系我们

电话:86-10-63299224/63299153

传真:010-63299754

QQ:XXXXXXX

Email:ysjsgc@bgrimm.com

邮编:100160

地址:北京市南四环西路188号总部基地十八区23号楼

关注微信公众号