A study on the effect of annealing treatment on the electrochemical properties of La0.67Mg0.33Ni2.5Co0.5 alloy electrodes

Hongge Pan; Yongfeng Liu; Mingxia Gao; Yunfeng Zhu; Yongquan Lei; Qidong Wang

doi:10.1016/S0360-3199(02)00035-6

A study on the effect of annealing treatment on the electrochemical properties of La_0.67Mg_0.33Ni_2.5Co_0.5 alloy electrodes

Hongge Pan, Yongfeng Liu, Mingxia Gao, Yunfeng Zhu, Yongquan Lei, Qidong Wang

Zhejiang University

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

79 Scopus citations

Abstract

In this paper, the influence of heat treatment on the electrochemical properties of La_0.67Mg_0.33Ni_2.5Co_0.5 alloy electrodes has been studied. The results show that, after heat treatment, the electrochemical properties including the discharge capacity, width of discharge plateau and cyclic stability have been improved markedly. The discharge capacity of the alloy annealed at 1123 K is the highest and the cycle life of the alloy annealed at 1223 K is the longest, respectively. In addition, the exchange current density I₀ and the limiting current density I_L of the alloy electrode both increase when annealed at 1123 K and then decrease when the annealing temperature increases to 1223 K.

Original language	English
Pages (from-to)	113-117
Number of pages	5
Journal	International Journal of Hydrogen Energy
Volume	28
Issue number	1
DOIs	https://doi.org/10.1016/S0360-3199(02)00035-6
State	Published - Jan 2003
Externally published	Yes

Keywords

Annealing treatment
Electrochemical properties
LaMgNiCo hydrogen storage alloy

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/S0360-3199(02)00035-6

Cite this

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title = "A study on the effect of annealing treatment on the electrochemical properties of La0.67Mg0.33Ni2.5Co0.5 alloy electrodes",

abstract = "In this paper, the influence of heat treatment on the electrochemical properties of La0.67Mg0.33Ni2.5Co0.5 alloy electrodes has been studied. The results show that, after heat treatment, the electrochemical properties including the discharge capacity, width of discharge plateau and cyclic stability have been improved markedly. The discharge capacity of the alloy annealed at 1123 K is the highest and the cycle life of the alloy annealed at 1223 K is the longest, respectively. In addition, the exchange current density I0 and the limiting current density IL of the alloy electrode both increase when annealed at 1123 K and then decrease when the annealing temperature increases to 1223 K.",

keywords = "Annealing treatment, Electrochemical properties, LaMgNiCo hydrogen storage alloy",

author = "Hongge Pan and Yongfeng Liu and Mingxia Gao and Yunfeng Zhu and Yongquan Lei and Qidong Wang",

year = "2003",

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TY - JOUR

T1 - A study on the effect of annealing treatment on the electrochemical properties of La0.67Mg0.33Ni2.5Co0.5 alloy electrodes

AU - Pan, Hongge

AU - Liu, Yongfeng

AU - Gao, Mingxia

AU - Zhu, Yunfeng

AU - Lei, Yongquan

AU - Wang, Qidong

PY - 2003/1

Y1 - 2003/1

N2 - In this paper, the influence of heat treatment on the electrochemical properties of La0.67Mg0.33Ni2.5Co0.5 alloy electrodes has been studied. The results show that, after heat treatment, the electrochemical properties including the discharge capacity, width of discharge plateau and cyclic stability have been improved markedly. The discharge capacity of the alloy annealed at 1123 K is the highest and the cycle life of the alloy annealed at 1223 K is the longest, respectively. In addition, the exchange current density I0 and the limiting current density IL of the alloy electrode both increase when annealed at 1123 K and then decrease when the annealing temperature increases to 1223 K.

AB - In this paper, the influence of heat treatment on the electrochemical properties of La0.67Mg0.33Ni2.5Co0.5 alloy electrodes has been studied. The results show that, after heat treatment, the electrochemical properties including the discharge capacity, width of discharge plateau and cyclic stability have been improved markedly. The discharge capacity of the alloy annealed at 1123 K is the highest and the cycle life of the alloy annealed at 1223 K is the longest, respectively. In addition, the exchange current density I0 and the limiting current density IL of the alloy electrode both increase when annealed at 1123 K and then decrease when the annealing temperature increases to 1223 K.

KW - Annealing treatment

KW - Electrochemical properties

KW - LaMgNiCo hydrogen storage alloy

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DO - 10.1016/S0360-3199(02)00035-6

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SN - 0360-3199

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JO - International Journal of Hydrogen Energy

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