Electrochemical properties of TiV-based hydrogen storage alloys

Yun Feng Zhu; Rui Li; Ming Xia Gao; Yong Feng Liu; Hong Ge Pan; Qi Dong Wang

Electrochemical properties of TiV-based hydrogen storage alloys

Yun Feng Zhu, Rui Li, Ming Xia Gao, Yong Feng Liu, Hong Ge Pan, Qi Dong Wang

Zhejiang University

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

The electrochemical properties of the super-stoichiometric TiV-based hydrogen storage electrode alloys (Ti_0.8Zr_0.2) (V0.533Mn0.107Cr0.16Ni0.2) (x=2, 3, 4, 5, 6) were studied. It is found by XRD analysis that all the alloys mainly consist of a C14 Laves phase with hexagonal structure and a V-based solid solution phase with BCC structure. The lattice parameters and the unit cell volumes of the two phases decrease with increasing x. The cycle life, the linear polarization, the anode polarization and the electrochemical impedance spectra of the alloy electrodes were investigated systematically. The overall electrochemical properties of the alloy electrode are found improved greatly as the result of super-stoichiometry and get to the best when x=5.

Original language	English
Pages (from-to)	33-37
Number of pages	5
Journal	Transactions of Nonferrous Metals Society of China (English Edition)
Volume	13
Issue number	1
State	Published - Feb 2003
Externally published	Yes

Keywords

C14 Laves phase
Electrochemical property
Super-stoichiometry
TiV-based hydrogen storage alloy
V-based solid solution

Cite this

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title = "Electrochemical properties of TiV-based hydrogen storage alloys",

abstract = "The electrochemical properties of the super-stoichiometric TiV-based hydrogen storage electrode alloys (Ti0.8Zr0.2) (V0.533Mn0.107Cr0.16Ni0.2) (x=2, 3, 4, 5, 6) were studied. It is found by XRD analysis that all the alloys mainly consist of a C14 Laves phase with hexagonal structure and a V-based solid solution phase with BCC structure. The lattice parameters and the unit cell volumes of the two phases decrease with increasing x. The cycle life, the linear polarization, the anode polarization and the electrochemical impedance spectra of the alloy electrodes were investigated systematically. The overall electrochemical properties of the alloy electrode are found improved greatly as the result of super-stoichiometry and get to the best when x=5.",

keywords = "C14 Laves phase, Electrochemical property, Super-stoichiometry, TiV-based hydrogen storage alloy, V-based solid solution",

author = "Zhu, {Yun Feng} and Rui Li and Gao, {Ming Xia} and Liu, {Yong Feng} and Pan, {Hong Ge} and Wang, {Qi Dong}",

year = "2003",

month = feb,

language = "英语",

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journal = "Transactions of Nonferrous Metals Society of China (English Edition)",

issn = "1003-6326",

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TY - JOUR

T1 - Electrochemical properties of TiV-based hydrogen storage alloys

AU - Zhu, Yun Feng

AU - Li, Rui

AU - Gao, Ming Xia

AU - Liu, Yong Feng

AU - Pan, Hong Ge

AU - Wang, Qi Dong

PY - 2003/2

Y1 - 2003/2

N2 - The electrochemical properties of the super-stoichiometric TiV-based hydrogen storage electrode alloys (Ti0.8Zr0.2) (V0.533Mn0.107Cr0.16Ni0.2) (x=2, 3, 4, 5, 6) were studied. It is found by XRD analysis that all the alloys mainly consist of a C14 Laves phase with hexagonal structure and a V-based solid solution phase with BCC structure. The lattice parameters and the unit cell volumes of the two phases decrease with increasing x. The cycle life, the linear polarization, the anode polarization and the electrochemical impedance spectra of the alloy electrodes were investigated systematically. The overall electrochemical properties of the alloy electrode are found improved greatly as the result of super-stoichiometry and get to the best when x=5.

AB - The electrochemical properties of the super-stoichiometric TiV-based hydrogen storage electrode alloys (Ti0.8Zr0.2) (V0.533Mn0.107Cr0.16Ni0.2) (x=2, 3, 4, 5, 6) were studied. It is found by XRD analysis that all the alloys mainly consist of a C14 Laves phase with hexagonal structure and a V-based solid solution phase with BCC structure. The lattice parameters and the unit cell volumes of the two phases decrease with increasing x. The cycle life, the linear polarization, the anode polarization and the electrochemical impedance spectra of the alloy electrodes were investigated systematically. The overall electrochemical properties of the alloy electrode are found improved greatly as the result of super-stoichiometry and get to the best when x=5.

KW - C14 Laves phase

KW - Electrochemical property

KW - Super-stoichiometry

KW - TiV-based hydrogen storage alloy

KW - V-based solid solution

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M3 - 文章

AN - SCOPUS:0037714937

SN - 1003-6326

VL - 13

SP - 33

EP - 37

JO - Transactions of Nonferrous Metals Society of China (English Edition)

JF - Transactions of Nonferrous Metals Society of China (English Edition)

IS - 1

ER -

Electrochemical properties of TiV-based hydrogen storage alloys

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