Electrochemical performance enhancement in MnCo2O4 nanoflake/graphene nanoplatelets composite

被引：57

作者：

Al-Rubaye, Shaymaa ^{[1
]}

Rajagopalan, Ranjusha ^{[1
]}

Subramaniyam, Chandrasekar M. ^{[1
]}

Yu, Zheyin ^{[1
]}

Dou, Shi Xue ^{[1
]}

Cheng, Zhenxiang ^{[1
]}

机构：

[1] Univ Wollongong, Inst Superconducting & Elect Mat, Wollongong, NSW 2522, Australia

来源：

JOURNAL OF POWER SOURCES | 2016年 / 324卷

基金：

澳大利亚研究理事会;

关键词：

Graphene nanoplatelets; Supercapacitors; Cycling stability; Manganese cobalt oxide; Electrophoretic deposition; SPINEL MNCO2O4; COBALT OXIDE; GRAPHENE; ARRAYS; PAPER;

D O I：

10.1016/j.jpowsour.2016.05.081

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The synthesis and characterization of MnCo2O4 nanoflake/graphene nanoplatelets composite is reported here for high performance supercapacitor electrode applications. The MnCo2O4 nanoflakes with different morphologies were synthesized successfully via a hydrothermal technique by changing the amount of NH4F. The MnCo2O4 nanoflakes in combination with the graphene nanoplatelets was deposited on Ni foam using an electrophoretic deposition technique. The as prepared composite electrode showed superior performance in terms of specific capacitance and cycling stability, as compared to the pristine MnCo2O4 system, due to the enhanced electronic conductivity resulted from bond formation between carbon and MnCo2O4, A high specific capacitance of similar to 1268 F g(-1), was observed at 1 mV s(-1) scan rate. Noteworthy cycling stability was observed even at the end of 10,000 cycles of consecutive charging and discharging at a current density of 7.81 Ag-1. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：179 / 187

页数：9

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