Research Regarding Molybdenum Flakes’ Improvement on the Hydrogen Storage Efficiency of MgH2

Author:

Cheng Changshan1,Zhang Haoyu1,Song Mengchen1,Wu Fuying1,Zhang Liuting1

Affiliation:

1. School of Energy and Power, Instrumental Analysis Center, Jiangsu University of Science and Technology, Zhenjiang 212003, China

Abstract

As an efficient hydrogen storage material, magnesium hydride (MgH2) has a high capacity of 7.6 wt%. However, its performance deteriorates because of high thermodynamic and kinetic temperatures and the fast agglomeration of its nanocrystals during the hydrogen uptake and release process. The exploration of efficient catalysts is a popular, but currently challenging, topic. Therefore, we successfully prepared flake-like molybdenum (Mo) catalysts and doped them into MgH2 to enhance its properties. We found that the incorporation of 7wt%Mo into MgH2 could reduce the starting desorption temperature by approximately 100 °C. In addition, the 7wt%Mo-doped MgH2 could desorb almost all of the H2 within 20 min at a 325 °C isothermal condition. For hydrogenation, MgH2-7wt%Mo could absorb approximately 5 wt% of hydrogen within 5 min at a 250 °C isothermal condition with a hydrogen pressure of 3 MPa. In addition, the MgH2-7wt%Mo composite could maintain approximately 98% of the initial capacity at the end of 22 cycles, presenting good cycling performance.

Funder

National Natural Science Foundation of China

Publisher

MDPI AG

Subject

General Materials Science,Metals and Alloys

Reference41 articles.

1. Progress and Trends in Mg-based Materials for Energy Storage Research: A Review;Shao;Energy Technol.,2018

2. Hydrogen the fuel for 21st century;Jain;Int. J. Hydrogen Energy,2009

3. Recent progress in magnesium hydride modified through catalysis and nanoconfinement;Zhang;Int. J. Hydrogen Energy,2018

4. Empowering hydrogen storage performance of MgH2 by nanoengineering and nanocatalysis;Zhang;Mater. Today Nano,2020

5. Stress/strain effects on thermodynamic properties of magnesium hydride: A brief review;Zhang;Int. J. Hydrogen Energy,2017

Cited by 2 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3