Work

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

Year: 2015

Type: article

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.

Source: Advances in Materials Science and Engineering

DOI: 10.1155/2015/629415

Authors: T. Li, Z. Liu, G. Zhang, F. Ruan, R. Guo, J. Zhang

Institutions: Inner Mongolia University of Science and Technology, Shanghai University

Language: English

Topic: Hydrogen Storage and Materials

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: gold

Estimated APC paid: $2,670