An Ideal Electrode Material, 3D Surface-Microporous Graphene for Supercapacitors with Ultrahigh Areal Capacitance

被引:92
作者
Chang, Liang [1 ]
Stacchiola, Dario J. [2 ]
Hu, Yun Hang [1 ]
机构
[1] Michigan Technol Univ, Dept Mat Sci & Engn, 1400 Townsend Dr, Houghton, MI 49931 USA
[2] Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA
基金
美国国家科学基金会;
关键词
cabbage-coral-like graphene; surface micropores; electric double-layer capacitors; ultrahigh areal capacitance; scalable electrodes; DOUBLE-LAYER CAPACITORS; SENSITIZED SOLAR-CELLS; HIGH-PERFORMANCE; ENERGY-STORAGE; EXCELLENT PERFORMANCE; STRUCTURED GRAPHENE; CARBON; ULTRACAPACITORS; CHALLENGES; EFFICIENCY;
D O I
10.1021/acsami.7b07381
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
The efficient charge accumulation of an ideal supercapacitor electrode requires abundant micropores and its fast electrolyte-ions transport prefers meso/macropores. However, current electrode materials cannot meet both requirements, resulting in poor performance. Herein, we creatively constructed three-dimensional cabbage-coral-like graphene as an ideal electrode material, in which meso/macro channels are formed by graphene walls and rich micropores are incorporated in the surface layer of the graphene walls. The unique 3D graphene material can achieve a high gravimetric capacitance of 200 F/g with aqueous electrolyte, 3 times larger than that of commercially used activated carbon (70.8 F/g). Furthermore, it can reach an ultrahigh areal capacitance of 1.28 F/cm(2) and excellent rate capability (83.5% from 0.5 to 10 A/g) as well as high cycling stability (86.2% retention after 5000 cycles). The excellent electric double-layer performance of the 3D graphene electrode can be attributed to the fast electrolyte ion transport in the meso/macro channels and the rapid and reversible charge adsorption with negligible transport distance in the surface micropores.
引用
收藏
页码:24655 / 24661
页数:7
相关论文
共 42 条
[1]   Excellent performance of highly conductive porous Na-embedded carbon nanowalls for electric double-layer capacitors with a wide operating temperature range [J].
Chang, Liang ;
Wei, Wei ;
Sun, Kai ;
Hu, Yun Hang .
JOURNAL OF MATERIALS CHEMISTRY A, 2017, 5 (19) :9090-9096
[2]   Excellent capacitive deionization performance of meso-carbon microbeads [J].
Chang, Liang ;
Hu, Yun Hang .
RSC ADVANCES, 2016, 6 (53) :47285-47291
[3]   3D flower-structured graphene from CO2 for supercapacitors with ultrahigh areal capacitance at high current density [J].
Chang, Liang ;
Wei, Wei ;
Sun, Kai ;
Hu, Yun Hang .
JOURNAL OF MATERIALS CHEMISTRY A, 2015, 3 (19) :10183-10187
[4]   Pore-controlled synthesis of Mn2O3 microspheres for ultralong-life lithium storage electrode [J].
Chang, Liang ;
Mai, Liqiang ;
Xu, Xu ;
An, Qinyou ;
Zhao, Yunlong ;
Wang, Dandan ;
Feng, Xi .
RSC ADVANCES, 2013, 3 (06) :1947-1952
[5]   Challenges Facing Lithium Batteries and Electrical Double-Layer Capacitors [J].
Choi, Nam-Soon ;
Chen, Zonghai ;
Freunberger, Stefan A. ;
Ji, Xiulei ;
Sun, Yang-Kook ;
Amine, Khalil ;
Yushin, Gleb ;
Nazar, Linda F. ;
Cho, Jaephil ;
Bruce, Peter G. .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2012, 51 (40) :9994-10024
[6]   Supercapacitors Technical Requirements for New Applications [J].
Conte, M. .
FUEL CELLS, 2010, 10 (05) :806-818
[7]   Review on recent advances in nitrogen-doped carbons: preparations and applications in supercapacitors [J].
Deng, Yuanfu ;
Xie, Ye ;
Zou, Kaixiang ;
Ji, Xiulei .
JOURNAL OF MATERIALS CHEMISTRY A, 2016, 4 (04) :1144-1173
[8]   Laser Scribing of High-Performance and Flexible Graphene-Based Electrochemical Capacitors [J].
El-Kady, Maher F. ;
Strong, Veronica ;
Dubin, Sergey ;
Kaner, Richard B. .
SCIENCE, 2012, 335 (6074) :1326-1330
[9]   Supercapacitors for the energy management of electric vehicles [J].
Faggioli, E ;
Rena, P ;
Danel, V ;
Andrieu, X ;
Mallant, R ;
Kahlen, H .
JOURNAL OF POWER SOURCES, 1999, 84 (02) :261-269
[10]   A Layered-Nanospace-Confinement Strategy for the Synthesis of Two-Dimensional Porous Carbon Nanosheets for High-Rate Performance Supercapacitors [J].
Fan, Xiaoming ;
Yu, Chang ;
Yang, Juan ;
Ling, Zheng ;
Hu, Chao ;
Zhang, Mengdi ;
Qiu, Jieshan .
ADVANCED ENERGY MATERIALS, 2015, 5 (07)