Effect of pH on the electrochemical performance of Zn-doped nano-scale Ni(OH) 2

Li Zhao; Zhi Hao Liu; Bo Wang

Effect of pH on the electrochemical performance of Zn-doped nano-scale Ni(OH) ₂

Li Zhao^*
, Zhi Hao Liu
, Bo Wang

^*Corresponding author for this work

School of Chemistry and Chemical Engineering, Harbin Institute of Technology

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

Abstract

In order to research the effects of pH values on the electrochemical performance of Zn-doped nano-scale Ni(OH) ₂, the nano-scale Ni(OH) ₂ doped with Zn was prepared by precipitate transformation method at different pH, and characterized by XRD and TEM. The electrochemical performance was investigated by voltammetry (CV) and constant current technology. The measurement results indicate that the material prepared under pH=10 is a kind of α-type nano-scale Ni(OH) ₂, and with the increase of pH, the material becomes the mixture of α-Ni(OH) ₂ and β-Ni(OH) ₂, and the agglomeration of particles becomes obvious. pH exerts a great influence on the electrochemical performance of materials. With the increase of pH, the diffusion coefficient of materials becomes bigger. Compared with the material prepared at pH=10, the material prepared at pH=12 shows better discharge performance, its discharge specific capacity of 0.2C and 3C were enhanced by 20% and 27% respectively.

Original language	English
Pages (from-to)	110-114
Number of pages	5
Journal	Harbin Gongye Daxue Xuebao/Journal of Harbin Institute of Technology
Volume	44
Issue number	6
State	Published - Jun 2012
Externally published	Yes

Keywords

Doping
Nano material
Nickel hydroxide
PH
Zinc

Cite this

@article{ab32315b036f4b1c9053f0cc89de2853,

title = "Effect of pH on the electrochemical performance of Zn-doped nano-scale Ni(OH) 2 ",

abstract = "In order to research the effects of pH values on the electrochemical performance of Zn-doped nano-scale Ni(OH) 2, the nano-scale Ni(OH) 2 doped with Zn was prepared by precipitate transformation method at different pH, and characterized by XRD and TEM. The electrochemical performance was investigated by voltammetry (CV) and constant current technology. The measurement results indicate that the material prepared under pH=10 is a kind of α-type nano-scale Ni(OH) 2, and with the increase of pH, the material becomes the mixture of α-Ni(OH) 2 and β-Ni(OH) 2, and the agglomeration of particles becomes obvious. pH exerts a great influence on the electrochemical performance of materials. With the increase of pH, the diffusion coefficient of materials becomes bigger. Compared with the material prepared at pH=10, the material prepared at pH=12 shows better discharge performance, its discharge specific capacity of 0.2C and 3C were enhanced by 20\% and 27\% respectively.",

keywords = "Doping, Nano material, Nickel hydroxide, PH, Zinc",

author = "Li Zhao and Liu, \{Zhi Hao\} and Bo Wang",

year = "2012",

month = jun,

language = "英语",

volume = "44",

pages = "110--114",

journal = "Harbin Gongye Daxue Xuebao/Journal of Harbin Institute of Technology",

issn = "0367-6234",

publisher = "Harbin Institute of Technology",

number = "6",

}

TY - JOUR

T1 - Effect of pH on the electrochemical performance of Zn-doped nano-scale Ni(OH) 2

AU - Zhao, Li

AU - Liu, Zhi Hao

AU - Wang, Bo

PY - 2012/6

Y1 - 2012/6

N2 - In order to research the effects of pH values on the electrochemical performance of Zn-doped nano-scale Ni(OH) 2, the nano-scale Ni(OH) 2 doped with Zn was prepared by precipitate transformation method at different pH, and characterized by XRD and TEM. The electrochemical performance was investigated by voltammetry (CV) and constant current technology. The measurement results indicate that the material prepared under pH=10 is a kind of α-type nano-scale Ni(OH) 2, and with the increase of pH, the material becomes the mixture of α-Ni(OH) 2 and β-Ni(OH) 2, and the agglomeration of particles becomes obvious. pH exerts a great influence on the electrochemical performance of materials. With the increase of pH, the diffusion coefficient of materials becomes bigger. Compared with the material prepared at pH=10, the material prepared at pH=12 shows better discharge performance, its discharge specific capacity of 0.2C and 3C were enhanced by 20% and 27% respectively.

AB - In order to research the effects of pH values on the electrochemical performance of Zn-doped nano-scale Ni(OH) 2, the nano-scale Ni(OH) 2 doped with Zn was prepared by precipitate transformation method at different pH, and characterized by XRD and TEM. The electrochemical performance was investigated by voltammetry (CV) and constant current technology. The measurement results indicate that the material prepared under pH=10 is a kind of α-type nano-scale Ni(OH) 2, and with the increase of pH, the material becomes the mixture of α-Ni(OH) 2 and β-Ni(OH) 2, and the agglomeration of particles becomes obvious. pH exerts a great influence on the electrochemical performance of materials. With the increase of pH, the diffusion coefficient of materials becomes bigger. Compared with the material prepared at pH=10, the material prepared at pH=12 shows better discharge performance, its discharge specific capacity of 0.2C and 3C were enhanced by 20% and 27% respectively.

KW - Doping

KW - Nano material

KW - Nickel hydroxide

KW - PH

KW - Zinc

UR - https://www.scopus.com/pages/publications/84865061212

M3 - 文章

AN - SCOPUS:84865061212

SN - 0367-6234

VL - 44

SP - 110

EP - 114

JO - Harbin Gongye Daxue Xuebao/Journal of Harbin Institute of Technology

JF - Harbin Gongye Daxue Xuebao/Journal of Harbin Institute of Technology

IS - 6

ER -

Effect of pH on the electrochemical performance of Zn-doped nano-scale Ni(OH) ₂

Abstract

Keywords

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