Effects of Cu Substitution for Sn on the Electrochemical Performance of La0.7Mg0.3Al0.3Mn0.4Sn0.5−xCuxNi3.8 (x = 0–0.5) Alloys for Ni-MH Batteries

The effects of substitution of Cu for Sn on the electrochemical discharge capacity performance of La0.7Mg0.3Al0.3Mn0.4Sn0.5−xCuxNi3.8 (x = 0.0, 0.1, 0.2, 0.3, and 0.5) negative electrode alloys were investigated. Results indicate that increasing Cu content enhanced electrochemical behavior by increa...

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Veröffentlicht in:Batteries (Basel) 2015-12, Vol.1 (1), p.3-10
Hauptverfasser: Casini, Julio, Guo, Zaiping, Liu, Hua, Faria, Rubens, Takiishi, Hidetoshi
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container_issue 1
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container_title Batteries (Basel)
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creator Casini, Julio
Guo, Zaiping
Liu, Hua
Faria, Rubens
Takiishi, Hidetoshi
description The effects of substitution of Cu for Sn on the electrochemical discharge capacity performance of La0.7Mg0.3Al0.3Mn0.4Sn0.5−xCuxNi3.8 (x = 0.0, 0.1, 0.2, 0.3, and 0.5) negative electrode alloys were investigated. Results indicate that increasing Cu content enhanced electrochemical behavior by increasing the maximum discharge capacity from 239.8 mA·h/g (x = 0) to 305.2 mA·h/g (x = 0.5), the discharge capacity retention at the 100th cycle from 78.0% (x = 0) to 81.8% (x = 0.5), and the high rate dischargeability (HRD) from 25.7% (x = 0) to 80.6% (x = 0.5).
doi_str_mv 10.3390/batteries1010003
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source DOAJ Directory of Open Access Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; MDPI - Multidisciplinary Digital Publishing Institute
subjects Alloys
Automobile industry
Copper
Discharge
Electrochemical analysis
Electrodes
Energy
Hydrogen
Metal hydrides
Microstructure
Nickel
Rechargeable batteries
Retention
Substitutes
Tin
title Effects of Cu Substitution for Sn on the Electrochemical Performance of La0.7Mg0.3Al0.3Mn0.4Sn0.5−xCuxNi3.8 (x = 0–0.5) Alloys for Ni-MH Batteries
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