Effect of activating treatment on electrochemical properties of Co powders

Yan Yao; Xiang Yu Zhao; Li Qun Ma; Tie Nan Qin; Yi Ding

doi:10.3963/j.issn.1671-4431.2010.24.009

Effect of activating treatment on electrochemical properties of Co powders

Yan Yao, Xiang Yu Zhao, Li Qun Ma, Tie Nan Qin, Yi Ding

College of Materials Science and Engineering

Nanjing Tech University

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

Abstract

The electrochemical hydrogen storage performance of Co powders was modified after the activating treatment by palladium chloride. The effects of activating treatment on electrochemical properties of Co powders were investigated by using charge and discharge testing and electrochemical impedance spectroscopy (EIS). The discharge capacity and cycling stability of Co were improved after the treatment. The maximum discharge capacity of the activated Co was 405.1 mAh/g, while the capacity of the original Co was 357.2 mAh/g. The cycling capacity retention rate S₅₀ increases from 55.2% to 66.7% after the activating treatment. Furthermore, the activating treatment contributes to a decrease in charge-transfer resistance, thus leading to a significant improvement in high rate dischargeability (HRD).

Original language	English
Pages (from-to)	35-38+124
Journal	Wuhan Ligong Daxue Xuebao/Journal of Wuhan University of Technology
Volume	32
Issue number	24
DOIs	https://doi.org/10.3963/j.issn.1671-4431.2010.24.009
State	Published - 30 Dec 2010

Keywords

Activated treatment
Cobalt
Electrochemical properties
Palladium chloride

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10.3963/j.issn.1671-4431.2010.24.009

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title = "Effect of activating treatment on electrochemical properties of Co powders",

abstract = "The electrochemical hydrogen storage performance of Co powders was modified after the activating treatment by palladium chloride. The effects of activating treatment on electrochemical properties of Co powders were investigated by using charge and discharge testing and electrochemical impedance spectroscopy (EIS). The discharge capacity and cycling stability of Co were improved after the treatment. The maximum discharge capacity of the activated Co was 405.1 mAh/g, while the capacity of the original Co was 357.2 mAh/g. The cycling capacity retention rate S50 increases from 55.2% to 66.7% after the activating treatment. Furthermore, the activating treatment contributes to a decrease in charge-transfer resistance, thus leading to a significant improvement in high rate dischargeability (HRD).",

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T1 - Effect of activating treatment on electrochemical properties of Co powders

AU - Yao, Yan

AU - Zhao, Xiang Yu

AU - Ma, Li Qun

AU - Qin, Tie Nan

AU - Ding, Yi

PY - 2010/12/30

Y1 - 2010/12/30

N2 - The electrochemical hydrogen storage performance of Co powders was modified after the activating treatment by palladium chloride. The effects of activating treatment on electrochemical properties of Co powders were investigated by using charge and discharge testing and electrochemical impedance spectroscopy (EIS). The discharge capacity and cycling stability of Co were improved after the treatment. The maximum discharge capacity of the activated Co was 405.1 mAh/g, while the capacity of the original Co was 357.2 mAh/g. The cycling capacity retention rate S50 increases from 55.2% to 66.7% after the activating treatment. Furthermore, the activating treatment contributes to a decrease in charge-transfer resistance, thus leading to a significant improvement in high rate dischargeability (HRD).

AB - The electrochemical hydrogen storage performance of Co powders was modified after the activating treatment by palladium chloride. The effects of activating treatment on electrochemical properties of Co powders were investigated by using charge and discharge testing and electrochemical impedance spectroscopy (EIS). The discharge capacity and cycling stability of Co were improved after the treatment. The maximum discharge capacity of the activated Co was 405.1 mAh/g, while the capacity of the original Co was 357.2 mAh/g. The cycling capacity retention rate S50 increases from 55.2% to 66.7% after the activating treatment. Furthermore, the activating treatment contributes to a decrease in charge-transfer resistance, thus leading to a significant improvement in high rate dischargeability (HRD).

KW - Activated treatment

KW - Cobalt

KW - Electrochemical properties

KW - Palladium chloride

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Effect of activating treatment on electrochemical properties of Co powders

Abstract

Keywords

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