Electrochemical properties of MmNi3.8Co0.75Mn0.4Al0.2 hydrogen storage alloy modified with nanocrystalline nickel

Xiangyu Zhao; Yi Ding; Liqun Ma; Linying Wang; Meng Yang; Xiaodong Shen

doi:10.1016/j.ijhydene.2008.08.030

Electrochemical properties of MmNi_3.8Co_0.75Mn_0.4Al_0.2 hydrogen storage alloy modified with nanocrystalline nickel

Xiangyu Zhao, Yi Ding, Liqun Ma, Linying Wang, Meng Yang, Xiaodong Shen

College of Materials Science and Engineering

Nanjing Tech University

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

116 Scopus citations

Abstract

The effects of polycrystalline nickel and nanocrystalline nickel on the electrochemical properties of the MmNi_3.8Co_0.75Mn_0.4Al_0.2 hydrogen storage alloy with an emphasis on the influence of nanocrystalline nickel prepared by mechanical milling are investigated. The electrochemical properties such as the activation, plateau potential and discharge capacity are improved after the modification with the nanocrystalline nickel. The result of linear polarization measurement shows that the exchange current density increases and the polarization resistance decreases after the modification. The result of Tafel polarization measurement also demonstrates the same consequence, shows an increase of the limiting current density and an excellent ability of antioxidation or anticorrosion, and indicates an improvement of the kinetics of the hydrogen absorption/desorption after the modification.

Original language	English
Pages (from-to)	6727-6733
Number of pages	7
Journal	International Journal of Hydrogen Energy
Volume	33
Issue number	22
DOIs	https://doi.org/10.1016/j.ijhydene.2008.08.030
State	Published - Nov 2008

Keywords

Charge-discharge property
Hydrogen storage
Linear polarization
Nanocrystalline
Tafel polarization

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

Access to Document

10.1016/j.ijhydene.2008.08.030

Cite this

@article{cda9857d6c43493cae73a9c1532d924d,

title = "Electrochemical properties of MmNi3.8Co0.75Mn0.4Al0.2 hydrogen storage alloy modified with nanocrystalline nickel",

abstract = "The effects of polycrystalline nickel and nanocrystalline nickel on the electrochemical properties of the MmNi3.8Co0.75Mn0.4Al0.2 hydrogen storage alloy with an emphasis on the influence of nanocrystalline nickel prepared by mechanical milling are investigated. The electrochemical properties such as the activation, plateau potential and discharge capacity are improved after the modification with the nanocrystalline nickel. The result of linear polarization measurement shows that the exchange current density increases and the polarization resistance decreases after the modification. The result of Tafel polarization measurement also demonstrates the same consequence, shows an increase of the limiting current density and an excellent ability of antioxidation or anticorrosion, and indicates an improvement of the kinetics of the hydrogen absorption/desorption after the modification.",

keywords = "Charge-discharge property, Hydrogen storage, Linear polarization, Nanocrystalline, Tafel polarization",

author = "Xiangyu Zhao and Yi Ding and Liqun Ma and Linying Wang and Meng Yang and Xiaodong Shen",

year = "2008",

month = nov,

doi = "10.1016/j.ijhydene.2008.08.030",

language = "英语",

volume = "33",

pages = "6727--6733",

journal = "International Journal of Hydrogen Energy",

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}

TY - JOUR

T1 - Electrochemical properties of MmNi3.8Co0.75Mn0.4Al0.2 hydrogen storage alloy modified with nanocrystalline nickel

AU - Zhao, Xiangyu

AU - Ding, Yi

AU - Ma, Liqun

AU - Wang, Linying

AU - Yang, Meng

AU - Shen, Xiaodong

PY - 2008/11

Y1 - 2008/11

N2 - The effects of polycrystalline nickel and nanocrystalline nickel on the electrochemical properties of the MmNi3.8Co0.75Mn0.4Al0.2 hydrogen storage alloy with an emphasis on the influence of nanocrystalline nickel prepared by mechanical milling are investigated. The electrochemical properties such as the activation, plateau potential and discharge capacity are improved after the modification with the nanocrystalline nickel. The result of linear polarization measurement shows that the exchange current density increases and the polarization resistance decreases after the modification. The result of Tafel polarization measurement also demonstrates the same consequence, shows an increase of the limiting current density and an excellent ability of antioxidation or anticorrosion, and indicates an improvement of the kinetics of the hydrogen absorption/desorption after the modification.

AB - The effects of polycrystalline nickel and nanocrystalline nickel on the electrochemical properties of the MmNi3.8Co0.75Mn0.4Al0.2 hydrogen storage alloy with an emphasis on the influence of nanocrystalline nickel prepared by mechanical milling are investigated. The electrochemical properties such as the activation, plateau potential and discharge capacity are improved after the modification with the nanocrystalline nickel. The result of linear polarization measurement shows that the exchange current density increases and the polarization resistance decreases after the modification. The result of Tafel polarization measurement also demonstrates the same consequence, shows an increase of the limiting current density and an excellent ability of antioxidation or anticorrosion, and indicates an improvement of the kinetics of the hydrogen absorption/desorption after the modification.

KW - Charge-discharge property

KW - Hydrogen storage

KW - Linear polarization

KW - Nanocrystalline

KW - Tafel polarization

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U2 - 10.1016/j.ijhydene.2008.08.030

DO - 10.1016/j.ijhydene.2008.08.030

M3 - 文章

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JO - International Journal of Hydrogen Energy

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