Mechanism of the enhancement of discharge rate property for Nd 0.8Mg0.2(Ni0.8Co0.2)3.8 hydrogen storage alloy by magnetic annealing

Chongchao Pan; Shonglin Yang; Ronghai Yu; Ji Shi; Y. Nakamura

doi:10.1016/S1002-0721(09)60098-3

Mechanism of the enhancement of discharge rate property for Nd _0.8Mg_0.2(Ni_0.8Co_0.2)_3.8 hydrogen storage alloy by magnetic annealing

Chongchao Pan
, Shonglin Yang
, Ronghai Yu^*
, Ji Shi
, Y. Nakamura

^*Corresponding author for this work

Tsinghua University
China National Institute of Standardization
Institute of Science Tokyo

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

10 Scopus citations

Abstract

For further improving the rate properties of Nd_0.8Mg _0.2(Ni_0.8Co_0.2)_3.8 hydrogen storage alloy, the alloy was annealed in high magnetic fields (10 T). The results showed that the electrochemical properties and magnetic properties of Nd _0.8Mg_0.2(Ni_0.8Co_0.2)_3.8 hydrogen storage alloy were considerably enhanced. And there was no change of the phase composition. The lattice constants of c and c/a ratio increased for the sample magnetically annealed, yielding uniaxial magnetic anisotropy along the c axis. The increase of c and c/a ratio enlarged interstitial volume, leading to a larger diffusion channel for hydrogen atoms, and resulted in high hydrogen storage capacity and rate properties.

Original language	English
Pages (from-to)	286-289
Number of pages	4
Journal	Journal of Rare Earths
Volume	28
Issue number	2
DOIs	https://doi.org/10.1016/S1002-0721(09)60098-3
State	Published - Apr 2010
Externally published	Yes

Keywords

Discharge rate property
Hydrogen storage
Interstitial orientation
Magnetic annealing
Rare earths

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10.1016/S1002-0721(09)60098-3

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title = "Mechanism of the enhancement of discharge rate property for Nd 0.8Mg0.2(Ni0.8Co0.2)3.8 hydrogen storage alloy by magnetic annealing",

abstract = "For further improving the rate properties of Nd0.8Mg 0.2(Ni0.8Co0.2)3.8 hydrogen storage alloy, the alloy was annealed in high magnetic fields (10 T). The results showed that the electrochemical properties and magnetic properties of Nd 0.8Mg0.2(Ni0.8Co0.2)3.8 hydrogen storage alloy were considerably enhanced. And there was no change of the phase composition. The lattice constants of c and c/a ratio increased for the sample magnetically annealed, yielding uniaxial magnetic anisotropy along the c axis. The increase of c and c/a ratio enlarged interstitial volume, leading to a larger diffusion channel for hydrogen atoms, and resulted in high hydrogen storage capacity and rate properties.",

keywords = "Discharge rate property, Hydrogen storage, Interstitial orientation, Magnetic annealing, Rare earths",

author = "Chongchao Pan and Shonglin Yang and Ronghai Yu and Ji Shi and Y. Nakamura",

year = "2010",

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doi = "10.1016/S1002-0721(09)60098-3",

language = "英语",

volume = "28",

pages = "286--289",

journal = "Journal of Rare Earths",

issn = "1002-0721",

publisher = "Editorial Office of Chinese Rare Earths",

number = "2",

}

TY - JOUR

T1 - Mechanism of the enhancement of discharge rate property for Nd 0.8Mg0.2(Ni0.8Co0.2)3.8 hydrogen storage alloy by magnetic annealing

AU - Pan, Chongchao

AU - Yang, Shonglin

AU - Yu, Ronghai

AU - Shi, Ji

AU - Nakamura, Y.

PY - 2010/4

Y1 - 2010/4

N2 - For further improving the rate properties of Nd0.8Mg 0.2(Ni0.8Co0.2)3.8 hydrogen storage alloy, the alloy was annealed in high magnetic fields (10 T). The results showed that the electrochemical properties and magnetic properties of Nd 0.8Mg0.2(Ni0.8Co0.2)3.8 hydrogen storage alloy were considerably enhanced. And there was no change of the phase composition. The lattice constants of c and c/a ratio increased for the sample magnetically annealed, yielding uniaxial magnetic anisotropy along the c axis. The increase of c and c/a ratio enlarged interstitial volume, leading to a larger diffusion channel for hydrogen atoms, and resulted in high hydrogen storage capacity and rate properties.

AB - For further improving the rate properties of Nd0.8Mg 0.2(Ni0.8Co0.2)3.8 hydrogen storage alloy, the alloy was annealed in high magnetic fields (10 T). The results showed that the electrochemical properties and magnetic properties of Nd 0.8Mg0.2(Ni0.8Co0.2)3.8 hydrogen storage alloy were considerably enhanced. And there was no change of the phase composition. The lattice constants of c and c/a ratio increased for the sample magnetically annealed, yielding uniaxial magnetic anisotropy along the c axis. The increase of c and c/a ratio enlarged interstitial volume, leading to a larger diffusion channel for hydrogen atoms, and resulted in high hydrogen storage capacity and rate properties.

KW - Discharge rate property

KW - Hydrogen storage

KW - Interstitial orientation

KW - Magnetic annealing

KW - Rare earths

UR - https://www.scopus.com/pages/publications/84863011194

U2 - 10.1016/S1002-0721(09)60098-3

DO - 10.1016/S1002-0721(09)60098-3

M3 - 文章

AN - SCOPUS:84863011194

SN - 1002-0721

VL - 28

SP - 286

EP - 289

JO - Journal of Rare Earths

JF - Journal of Rare Earths

IS - 2

ER -

Mechanism of the enhancement of discharge rate property for Nd _0.8Mg_0.2(Ni_0.8Co_0.2)_3.8 hydrogen storage alloy by magnetic annealing

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Keywords

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