Electrochemical Properties of La2Mg17/Ni Electrodes Prepared via TiF3-Catalysed Mechanical Milling-Reference-Cited by-同舟云学术

Electrochemical Properties of La2Mg17/Ni Electrodes Prepared via TiF3-Catalysed Mechanical Milling

Published:2015 Issue: Volume:2015 Page:1-5
ISSN:1687-8434
Container-title:Advances in Materials Science and Engineering
language:en
Short-container-title:Advances in Materials Science and Engineering

Author:

Li T.¹,Liu Z.¹²,Zhang G.¹,Ruan F.¹,Guo R.¹²,Zhang J.²

Affiliation:

1. School of Material, Inner Mongolia University of Science and Technology, Baotou 014010, China

2. Shanghai Key Laboratory of Modern Metallurgy & Materials Processing, Shanghai University, Shanghai 200072, China

Abstract

In order to improve the hydrogen storage capacity of conventional La2Mg17electrode alloys, a nanocrystalline/amorphous-structured La2Mg17-Ni composite material was produced by high energy ball milling in the presence of TiF3. Subsequent analysis of the discharge/charge cycle performances of this electrode material revealed that its cycle stability and electrochemical capacity were greatly improved, with the latter reaching a maximum value of 787.07 mAh/g with optimisation of the TiF3addition. Moreover, a remarkable enhancement in the reversibility of electrochemical reactions on the material’s surface was also observed. Hydrogen diffusion coefficients for the material were calculated by means of a potential step method, confirming that TiF3markedly improves the long-range diffusion of hydrogen within the material.

Publisher

Hindawi Limited

Subject

General Engineering,General Materials Science

Link

http://downloads.hindawi.com/journals/amse/2015/629415.pdf

Reference17 articles.

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4. Structural and Electrochemical Hydriding Characteristics of Mg–Ti-Based Alloys Prepared by High Energy Ballmilling

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