Discharge properties of Mg2Ni-Ni alloy synthesized by mechanical alloying

Takatoshi Tojo; Issei Yamamoto; Kibu Chiyo; Fumio Saito

doi:10.1163/156855205774483299

Discharge properties of Mg₂Ni-Ni alloy synthesized by mechanical alloying

Takatoshi Tojo, Issei Yamamoto, Kibu Chiyo, Fumio Saito

Division of Process and System Engineering

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

8 Citations (Scopus)

Abstract

The electrochemical characteristics of Mg₂Ni-Ni alloys prepared by mechanical alloying (MA) using a planetary ball mill were investigated. The discharge capacity depends on the molar ratio in Ni and Mg₂Ni, and it has a maximum value of about 480 mAh/g at the equimolar ratio of Ni/Mg ₂Ni. This discharge capacity (480 mAh/g) is about 74% of the theoretical one. The discharge capacity is reduced to about half within five cycles. Thus, the cycle time would be improved by inhibiting the oxidation of Mg₂Ni.

Original language	English
Pages (from-to)	649-658
Number of pages	10
Journal	Advanced Powder Technology
Volume	16
Issue number	6
DOIs	https://doi.org/10.1163/156855205774483299
Publication status	Published - 2005 Jan 1

Keywords

Mechanical alloying
MgNi
Nickel-metal hydride battery
Oxidation

ASJC Scopus subject areas

Chemical Engineering(all)
Mechanics of Materials

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abstract = "The electrochemical characteristics of Mg2Ni-Ni alloys prepared by mechanical alloying (MA) using a planetary ball mill were investigated. The discharge capacity depends on the molar ratio in Ni and Mg2Ni, and it has a maximum value of about 480 mAh/g at the equimolar ratio of Ni/Mg 2Ni. This discharge capacity (480 mAh/g) is about 74% of the theoretical one. The discharge capacity is reduced to about half within five cycles. Thus, the cycle time would be improved by inhibiting the oxidation of Mg2Ni.",

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AU - Tojo, Takatoshi

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AU - Chiyo, Kibu

AU - Saito, Fumio

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N2 - The electrochemical characteristics of Mg2Ni-Ni alloys prepared by mechanical alloying (MA) using a planetary ball mill were investigated. The discharge capacity depends on the molar ratio in Ni and Mg2Ni, and it has a maximum value of about 480 mAh/g at the equimolar ratio of Ni/Mg 2Ni. This discharge capacity (480 mAh/g) is about 74% of the theoretical one. The discharge capacity is reduced to about half within five cycles. Thus, the cycle time would be improved by inhibiting the oxidation of Mg2Ni.

AB - The electrochemical characteristics of Mg2Ni-Ni alloys prepared by mechanical alloying (MA) using a planetary ball mill were investigated. The discharge capacity depends on the molar ratio in Ni and Mg2Ni, and it has a maximum value of about 480 mAh/g at the equimolar ratio of Ni/Mg 2Ni. This discharge capacity (480 mAh/g) is about 74% of the theoretical one. The discharge capacity is reduced to about half within five cycles. Thus, the cycle time would be improved by inhibiting the oxidation of Mg2Ni.

KW - Mechanical alloying

KW - MgNi

KW - Nickel-metal hydride battery

KW - Oxidation

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