Study of the performance of Ti-Zr based hydrogen storage alloys

H. J. Chuang; S. L.I. Chan

doi:10.1016/S0378-7753(98)00189-X

Study of the performance of Ti-Zr based hydrogen storage alloys

H. J. Chuang, S. L.I. Chan

Department of Chemical and Materials Engineering

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

11 Scopus citations

Abstract

The P-C-I and charging-discharging properties of three Ti-Zr based alloys have been studied. Ni substitution for Mn and Cr in the alloy was found to increase the plateau pressure of the P-C-I curve. In addition, the partial substitution of Cr by V greatly improved the discharge capacity. However, the six-element alloy, Ti_0.5Zr_0.5V_0.2Mn_0.7Cr _0.5Ni_0.6, degraded rapidly in the gas-solid reaction. Hydrogen contents in the alloy under low pressure were increased during hydrogen absorption-desorption cycling. Annealing at 1050°C for 4 h before the P-C-I experiment helped in releasing the retained hydrogen under low pressure. Only a slightly flattened P-C-I slope was obtained for the annealed alloy. Microstructures of the as-cast and annealed alloys were examined and related to the above results. Alloy powder was poisoned after 2-month storage in air, which resulted in the deterioration of discharge capacity. Surface pretreatment on alloy powders by HCl-HF solution decreased the activation time of charge-discharge reaction.

Original language	English
Pages (from-to)	159-163
Number of pages	5
Journal	Journal of Power Sources
Volume	77
Issue number	2
DOIs	https://doi.org/10.1016/S0378-7753(98)00189-X
State	Published - 1999

Keywords

Activation
Degradation
Discharge capacity
Hydrogen storage alloys
P-C-I curves

UN SDGs

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

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10.1016/S0378-7753(98)00189-X

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title = "Study of the performance of Ti-Zr based hydrogen storage alloys",

abstract = "The P-C-I and charging-discharging properties of three Ti-Zr based alloys have been studied. Ni substitution for Mn and Cr in the alloy was found to increase the plateau pressure of the P-C-I curve. In addition, the partial substitution of Cr by V greatly improved the discharge capacity. However, the six-element alloy, Ti0.5Zr0.5V0.2Mn0.7Cr 0.5Ni0.6, degraded rapidly in the gas-solid reaction. Hydrogen contents in the alloy under low pressure were increased during hydrogen absorption-desorption cycling. Annealing at 1050°C for 4 h before the P-C-I experiment helped in releasing the retained hydrogen under low pressure. Only a slightly flattened P-C-I slope was obtained for the annealed alloy. Microstructures of the as-cast and annealed alloys were examined and related to the above results. Alloy powder was poisoned after 2-month storage in air, which resulted in the deterioration of discharge capacity. Surface pretreatment on alloy powders by HCl-HF solution decreased the activation time of charge-discharge reaction.",

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AU - Chuang, H. J.

AU - Chan, S. L.I.

PY - 1999

Y1 - 1999

N2 - The P-C-I and charging-discharging properties of three Ti-Zr based alloys have been studied. Ni substitution for Mn and Cr in the alloy was found to increase the plateau pressure of the P-C-I curve. In addition, the partial substitution of Cr by V greatly improved the discharge capacity. However, the six-element alloy, Ti0.5Zr0.5V0.2Mn0.7Cr 0.5Ni0.6, degraded rapidly in the gas-solid reaction. Hydrogen contents in the alloy under low pressure were increased during hydrogen absorption-desorption cycling. Annealing at 1050°C for 4 h before the P-C-I experiment helped in releasing the retained hydrogen under low pressure. Only a slightly flattened P-C-I slope was obtained for the annealed alloy. Microstructures of the as-cast and annealed alloys were examined and related to the above results. Alloy powder was poisoned after 2-month storage in air, which resulted in the deterioration of discharge capacity. Surface pretreatment on alloy powders by HCl-HF solution decreased the activation time of charge-discharge reaction.

AB - The P-C-I and charging-discharging properties of three Ti-Zr based alloys have been studied. Ni substitution for Mn and Cr in the alloy was found to increase the plateau pressure of the P-C-I curve. In addition, the partial substitution of Cr by V greatly improved the discharge capacity. However, the six-element alloy, Ti0.5Zr0.5V0.2Mn0.7Cr 0.5Ni0.6, degraded rapidly in the gas-solid reaction. Hydrogen contents in the alloy under low pressure were increased during hydrogen absorption-desorption cycling. Annealing at 1050°C for 4 h before the P-C-I experiment helped in releasing the retained hydrogen under low pressure. Only a slightly flattened P-C-I slope was obtained for the annealed alloy. Microstructures of the as-cast and annealed alloys were examined and related to the above results. Alloy powder was poisoned after 2-month storage in air, which resulted in the deterioration of discharge capacity. Surface pretreatment on alloy powders by HCl-HF solution decreased the activation time of charge-discharge reaction.

KW - Activation

KW - Degradation

KW - Discharge capacity

KW - Hydrogen storage alloys

KW - P-C-I curves

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DO - 10.1016/S0378-7753(98)00189-X

M3 - 期刊論文

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VL - 77

SP - 159

EP - 163

JO - Journal of Power Sources

JF - Journal of Power Sources

IS - 2

ER -

Study of the performance of Ti-Zr based hydrogen storage alloys

Abstract

Keywords

UN SDGs

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