Phase structure and electrochemical properties of non-stoichiometric La0.7Ce0.3(Ni3.65Cu0.75Mn0.35Al0.15(Fe0.43B0.57)0.10)x hydrogen storage alloys

Fan, Yanping; Liu, Baozhong; Zhang, Baoqing; Ji, Liqiang; Zhang, Zhi

doi:10.1016/s1002-0721(12)60215-4

Cited by 4 publications

(1 citation statement)

References 26 publications

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“…2e-g, the composition of different phases can be confirmed. Some similar results have been reported by other researchers [32][33][34].…”

Section: Methodssupporting

confidence: 91%

Structure and Electrochemical Hydrogen Storage Properties of as-Milled Mg–Ce–Ni–Al-Based Alloys

Zhang

et al. 2020

Acta Metall. Sin. (Engl. Lett.)

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At room temperature, crystalline Mg-based alloys, including Mg 2 Ni, MgNi, REMg 12 and La 2 Mg 17 , have been proved with weak electrochemical hydrogen storage performances. For improving their electrochemical property, the Mg is partially substituted by Ce in Mg-Ni-based alloys and the surface modification treatment is performed by mechanical coating Ni. Mechanical milling is utilized to synthesize the amorphous and nanocrystalline Mg 1−x Ce x Ni 0.9 Al 0.1 (x = 0, 0.02, 0.04, 0.06, 0.08) + 50 wt%Ni hydrogen storage alloys. The effects made by Ce substitution and mechanical milling on the electrochemical hydrogen storage property and structure have been analyzed. It shows that the as-milled alloys electrochemically absorb and desorb hydrogen well at room temperature. The as-milled alloys, without any activation, can reach their maximal discharge capacities during first cycling. The maximal value of the 30-h-milled alloy depending on Ce content is 578.4 mAh/g, while that of the x = 0.08 alloy always grows when prolonging milling duration. The maximal discharge capacity augments from 337.4 to 521.2 mAh/g when milling duration grows from 5 to 30 h. The cycle stability grows with increasing Ce content and milling duration. Concretely, the S 100 value augments from 55 to 82% for the alloy milled for 30 h with Ce content rising from 0 to 0.08 and from 66 to 82% when milling the x = 0.08 alloy mechanically from 5 to 30 h. The alloys' electrochemical dynamics parameters were measured as well which have maximum values depending on Ce content and keep growing up with milling duration extending.

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“…2e-g, the composition of different phases can be confirmed. Some similar results have been reported by other researchers [32][33][34].…”

Section: Methodssupporting

confidence: 91%

Structure and Electrochemical Hydrogen Storage Properties of as-Milled Mg–Ce–Ni–Al-Based Alloys

Zhang

et al. 2020

Acta Metall. Sin. (Engl. Lett.)

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Hydrogen storage alloy development for wide operating temperature nickel-metal hydride battery applications

Nei,

Wang

2024

International Journal of Hydrogen Energy

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Effect of rapid solidification treatment on structure and electrochemical performance of low-Co AB5-type hydrogen storage alloy

Yao

Tang

Zhou

et al. 2014

Journal of Rare Earths

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Phase structure and electrochemical properties of non-stoichiometric La0.7Ce0.3(Ni3.65Cu0.75Mn0.35Al0.15(Fe0.43B0.57)0.10)x hydrogen storage alloys

Cited by 4 publications

References 26 publications

Structure and Electrochemical Hydrogen Storage Properties of as-Milled Mg–Ce–Ni–Al-Based Alloys

Structure and Electrochemical Hydrogen Storage Properties of as-Milled Mg–Ce–Ni–Al-Based Alloys

Hydrogen storage alloy development for wide operating temperature nickel-metal hydride battery applications

Effect of rapid solidification treatment on structure and electrochemical performance of low-Co AB5-type hydrogen storage alloy

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