Electrochemical Performance of Supercapacitor with Stacked Copper Foils Coated with Graphene Nanoplatelets

被引：70

作者：

Chiam, S. L. ^{[1
]}

Lim, H. N. ^{[1
,2
]}

Hafiz, S. M. ^{[2
]}

Pandikumar, A. ^{[3
]}

Huang, N. M. ^{[4
]}

机构：

[1] Univ Putra Malaysia, Fac Sci, Dept Chem, Serdang 43400, Selangor, Malaysia

[2] Univ Putra Malaysia, Inst Adv Technol, Mat Synth & Characterizat Lab, Serdang 43400, Selangor, Malaysia

[3] CSIR, Cent Electrochem Res Inst, Electrochem Mat Sci & Funct Mat Div, Karaikkudi 630003, Tamil Nadu, India

[4] Univ Xiamen Malaysia, New Energy Sci & Engn Programme, Jalan SunSuria, Sepang 43900, Selangor Darul, Malaysia

来源：

SCIENTIFIC REPORTS | 2018年 / 8卷

关键词：

FLEXIBLE SUPERCAPACITOR; OXIDE; CO3O4; NANOSTRUCTURES; COMPOSITES;

D O I：

10.1038/s41598-018-21572-x

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The energy density of conventional supercapacitors is in the range of 6-10 Wh kg(-1), which has restricted them from many applications that require devices with long durations. Herein, we report a method for enhancing the energy density of a device through the parallel stacking of five copper foils coated on each side with graphene nanoplatelets. Microporous papers immersed in 2 M aqueous sodium sulphate were used as separators. With a low contact resistance of 0.05 Omega, the supercapacitor yielded an optimum specific energy density and a specific power density of 24.64 Wh kg(-1) and 402 W kg(-1) at 0.8 V, respectively. The working potential was increased to 2.4 V when three of the supercapacitors were connected in series, forming a tandem device. Its potential for real applications was manifested by the ability to light up a light-emitting diode for 40 s after charging for 60 s.

引用

页数：7

共 31 条

[21] Facile synthesis and characterization of graphene nanosheets [J].

Wang, Guoxiu ;

Yang, Juan ;

Park, Jinsoo ;

Gou, Xinglong ;

Wang, Bei ;

Liu, Hao ;

Yao, Jane .

JOURNAL OF PHYSICAL CHEMISTRY C, 2008, 112 (22) :8192-8195

[22] Graphene nanosheets for enhanced lithium storage in lithium ion batteries [J].

Wang, Guoxiu ;

Shen, Xiaoping ;

Yao, Jane ;

Park, Jinsoo .

CARBON, 2009, 47 (08) :2049-2053

[23] Zinc oxide nanostructures: growth, properties and applications [J].

Wang, ZL .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2004, 16 (25) :R829-R858

[24] Self-supported hydrothermal synthesized hollow Co3O4 nanowire arrays with high supercapacitor capacitance [J].

Xia, Xin-hui ;

Tu, Jiang-ping ;

Mai, Yong-jin ;

Wang, Xiu-li ;

Gu, Chang-dong ;

Zhao, Xin-bing .

JOURNAL OF MATERIALS CHEMISTRY, 2011, 21 (25) :9319-9325

[25] Flexible Solid-State Supercapacitors Based on Three-Dimensional Graphene Hydrogel Films [J].

Xu, Yuxi ;

Lin, Zhaoyang ;

Huang, Xiaoqing ;

Liu, Yuan ;

Huang, Yu ;

Duan, Xiangfeng .

ACS NANO, 2013, 7 (05) :4042-4049

[26] Decorating reduced graphene oxide with Co3O4 hollow spheres and their application in supercapacitor materials [J].

Zhang, Danhui ;

Zou, Wenbin .

CURRENT APPLIED PHYSICS, 2013, 13 (08) :1796-1800

[27] Carbon-based materials as supercapacitor electrodes [J].

Zhang, Li Li ;

Zhao, X. S. .

CHEMICAL SOCIETY REVIEWS, 2009, 38 (09) :2520-2531

[28] Recent advances in porous graphene materials for supercapacitor applications [J].

Zhang, Xiong ;

Zhang, Haitao ;

Li, Chen ;

Wang, Kai ;

Sun, Xianzhong ;

Ma, Yanwei .

RSC ADVANCES, 2014, 4 (86) :45862-45884

[29] A review for aqueous electrochemical supercapacitors [J].

Zhao, Cuimei ;

Zheng, Weitao .

FRONTIERS IN ENERGY RESEARCH, 2015, 3 (MAY)

[30] A three-dimensional flexible supercapacitor with enhanced performance based on lightweight, conductive graphene-cotton fabric electrode [J].

Zhou, Qianlong ;

Ye, Xingke ;

Wan, Zhongquan ;

Jia, Chunyang .

JOURNAL OF POWER SOURCES, 2015, 296 :186-196

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