Effects of high-shear mixing and the graphene oxide weight fraction on the electrochemical properties of the GO/Ni(OH)2 electrode

Yinan Yuan; Zhaoyuan Liu; Bing Wei; Ziyue Yang; Lidong Wang; Weidong Fei

doi:10.1039/c9dt04525b

Effects of high-shear mixing and the graphene oxide weight fraction on the electrochemical properties of the GO/Ni(OH)₂ electrode

Yinan Yuan
, Zhaoyuan Liu
, Bing Wei
, Ziyue Yang
, Lidong Wang^*
, Weidong Fei

^*Corresponding author for this work

Harbin Institute of Technology
Heilongjiang University of Science and Technology

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

10 Scopus citations

Abstract

A high-shear mixer was used in the process of chemical precipitation to prepare graphene oxide (GO) and Ni(OH)₂ composites with different weight fractions of GO from 0 wt% to 2.6 wt%. The GO/Ni(OH)₂ composite with 1.5 wt% GO prepared by high-shear mixing (1.5GO/Ni(OH)₂-H) displayed a high specific capacitance (1836 F g^-1 at 2 mV s^-1), which was beyond that (1581 F g^-1 at 2 mV s^-1) of GO/Ni(OH)₂ obtained by impeller agitator stirring (1.5GO/Ni(OH)₂-M). 1.5GO/Ni(OH)₂-H also showed excellent cycling stability, retaining 91.7% of its initial specific capacitance after 2000 cycles. Furthermore, the asymmetric device (the 1.5GO/Ni(OH)₂-H as the positive electrode and active carbon as the negative electrode) exhibited a high energy density of 41.2 W h kg^-1 at a power density of 1500 W kg^-1 with a voltage of 1.5 V. In addition, the effects of high-shear mixing and impeller agitator stirring on the microstructures and electrochemical properties of the composites were discussed, which indicated that high-shear mixing could exfoliate graphene oxide and restrain the grain growth of Ni(OH)₂, thus leading to excellent electrochemical performance.

Original language	English
Pages (from-to)	1752-1764
Number of pages	13
Journal	Dalton Transactions
Volume	49
Issue number	6
DOIs	https://doi.org/10.1039/c9dt04525b
State	Published - 14 Feb 2020
Externally published	Yes

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title = "Effects of high-shear mixing and the graphene oxide weight fraction on the electrochemical properties of the GO/Ni(OH)2 electrode",

abstract = "A high-shear mixer was used in the process of chemical precipitation to prepare graphene oxide (GO) and Ni(OH)2 composites with different weight fractions of GO from 0 wt\% to 2.6 wt\%. The GO/Ni(OH)2 composite with 1.5 wt\% GO prepared by high-shear mixing (1.5GO/Ni(OH)2-H) displayed a high specific capacitance (1836 F g-1 at 2 mV s-1), which was beyond that (1581 F g-1 at 2 mV s-1) of GO/Ni(OH)2 obtained by impeller agitator stirring (1.5GO/Ni(OH)2-M). 1.5GO/Ni(OH)2-H also showed excellent cycling stability, retaining 91.7\% of its initial specific capacitance after 2000 cycles. Furthermore, the asymmetric device (the 1.5GO/Ni(OH)2-H as the positive electrode and active carbon as the negative electrode) exhibited a high energy density of 41.2 W h kg-1 at a power density of 1500 W kg-1 with a voltage of 1.5 V. In addition, the effects of high-shear mixing and impeller agitator stirring on the microstructures and electrochemical properties of the composites were discussed, which indicated that high-shear mixing could exfoliate graphene oxide and restrain the grain growth of Ni(OH)2, thus leading to excellent electrochemical performance.",

author = "Yinan Yuan and Zhaoyuan Liu and Bing Wei and Ziyue Yang and Lidong Wang and Weidong Fei",

note = "Publisher Copyright: This journal is {\textcopyright} The Royal Society of Chemistry.",

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T1 - Effects of high-shear mixing and the graphene oxide weight fraction on the electrochemical properties of the GO/Ni(OH)2 electrode

AU - Yuan, Yinan

AU - Liu, Zhaoyuan

AU - Wei, Bing

AU - Yang, Ziyue

AU - Wang, Lidong

AU - Fei, Weidong

PY - 2020/2/14

Y1 - 2020/2/14

N2 - A high-shear mixer was used in the process of chemical precipitation to prepare graphene oxide (GO) and Ni(OH)2 composites with different weight fractions of GO from 0 wt% to 2.6 wt%. The GO/Ni(OH)2 composite with 1.5 wt% GO prepared by high-shear mixing (1.5GO/Ni(OH)2-H) displayed a high specific capacitance (1836 F g-1 at 2 mV s-1), which was beyond that (1581 F g-1 at 2 mV s-1) of GO/Ni(OH)2 obtained by impeller agitator stirring (1.5GO/Ni(OH)2-M). 1.5GO/Ni(OH)2-H also showed excellent cycling stability, retaining 91.7% of its initial specific capacitance after 2000 cycles. Furthermore, the asymmetric device (the 1.5GO/Ni(OH)2-H as the positive electrode and active carbon as the negative electrode) exhibited a high energy density of 41.2 W h kg-1 at a power density of 1500 W kg-1 with a voltage of 1.5 V. In addition, the effects of high-shear mixing and impeller agitator stirring on the microstructures and electrochemical properties of the composites were discussed, which indicated that high-shear mixing could exfoliate graphene oxide and restrain the grain growth of Ni(OH)2, thus leading to excellent electrochemical performance.

AB - A high-shear mixer was used in the process of chemical precipitation to prepare graphene oxide (GO) and Ni(OH)2 composites with different weight fractions of GO from 0 wt% to 2.6 wt%. The GO/Ni(OH)2 composite with 1.5 wt% GO prepared by high-shear mixing (1.5GO/Ni(OH)2-H) displayed a high specific capacitance (1836 F g-1 at 2 mV s-1), which was beyond that (1581 F g-1 at 2 mV s-1) of GO/Ni(OH)2 obtained by impeller agitator stirring (1.5GO/Ni(OH)2-M). 1.5GO/Ni(OH)2-H also showed excellent cycling stability, retaining 91.7% of its initial specific capacitance after 2000 cycles. Furthermore, the asymmetric device (the 1.5GO/Ni(OH)2-H as the positive electrode and active carbon as the negative electrode) exhibited a high energy density of 41.2 W h kg-1 at a power density of 1500 W kg-1 with a voltage of 1.5 V. In addition, the effects of high-shear mixing and impeller agitator stirring on the microstructures and electrochemical properties of the composites were discussed, which indicated that high-shear mixing could exfoliate graphene oxide and restrain the grain growth of Ni(OH)2, thus leading to excellent electrochemical performance.

UR - https://www.scopus.com/pages/publications/85079250399

U2 - 10.1039/c9dt04525b

DO - 10.1039/c9dt04525b

M3 - 文章

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AN - SCOPUS:85079250399

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EP - 1764

JO - Dalton Transactions

JF - Dalton Transactions

IS - 6

ER -

Effects of high-shear mixing and the graphene oxide weight fraction on the electrochemical properties of the GO/Ni(OH)₂ electrode

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