High-Performance Asymmetric Supercapacitor Based on Hierarchical NiMn2O4@CoS Core-Shell Microspheres and Stereotaxically Constricted Graphene

被引:77
作者
Hu, Ning
Huang, Lei
Gong, Wenhao
Shen, Pei Kang [1 ]
机构
[1] Guangxi Univ, Collaborat Innovat Ctr Sustainable Energy Mat, Guangxi Key Lab Elect Energy Mat, 100 Daxue Rd, Nanning 530004, Peoples R China
来源
ACS SUSTAINABLE CHEMISTRY & ENGINEERING | 2018年 / 6卷 / 12期
关键词
NiMn2O4@CoS; Hierarchical core-shell microsphere; Stereotaxically constricted graphene; Pseudocapacitor; LITHIUM-ION BATTERIES; ELECTRODE MATERIALS; NICO2O4; NANOSHEETS; POROUS ALPHA-FE2O3; MATERIALS SCIENCE; FACILE SYNTHESIS; RATE-CAPABILITY; COBALT SULFIDE; ARRAYS; ENERGY;
D O I
10.1021/acssuschemeng.8b04265
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Three-dimensional self-assembled hierarchical NiMn2O4@CoS core-shell microspheres were synthesized via facile hydrothermal and post-electrodeposition methods on a Ni substrate. The microspheres were irregularly composed of many nanoflakes, whose diameter was approximately 1.8 mu m. The NiMn2O4@CoS composites were used as electrode materials exhibiting a ultrahigh specific capacitance and excellent cycle performance for pseudocapacitors. The specific capacitance of the composite electrode reached 1751 F/g at a current density of 1 A/g and 1270 F/g at a higher current density of 30 A/g. Most importantly, the specific capacitance still maintained 95% of the original value after 5000 cycles at 10 A/g. A NiMn2O4@CoS//stereotaxically constricted graphene (SCG) asymmetric supercapacitor device also showed a high energy density of 44.56 W h kg(-1) at a power density of 700.51 W/kg and an enormous power density of 20.99 kW/kg at 29.1 W h kg(-1). Moreover, the capacitance still maintained 94% of the original value even after 5000 cycles at 10 A/g. This outstanding electrochemical performance possibly makes NiMn2O4@CoS the next candidate electrode material for supercapacitor applications.
引用
收藏
页码:16933 / 16940
页数:15
相关论文
共 43 条
[1]   Long-term cycling behavior of asymmetric activated carbon/MnO2 aqueous electrochemical supercapacitor [J].
Brousse, Thierry ;
Taberna, Pierre-Louis ;
Crosnier, Olivier ;
Dugas, Romain ;
Guillemet, Philippe ;
Scudeller, Yves ;
Zhou, Yingke ;
Favier, Frederic ;
Belanger, Daniel ;
Simon, Patrice .
JOURNAL OF POWER SOURCES, 2007, 173 (01) :633-641
[2]   1-Dimensional porous α-Fe2O3 nanorods as high performance electrode material for supercapacitors [J].
Chaudhari, Sudeshna ;
Bhattacharjya, Dhrubajyoti ;
Yu, Jong-Sung .
RSC ADVANCES, 2013, 3 (47) :25120-25128
[3]   High-Performance Nanostructured Supercapacitors on a Sponge [J].
Chen, Wei ;
Rakhi, R. B. ;
Hu, Liangbing ;
Xie, Xing ;
Cui, Yi ;
Alshareef, H. N. .
NANO LETTERS, 2011, 11 (12) :5165-5172
[4]   Electrodeposition of MnO2 nanowires on carbon nanotube paper as free-standing, flexible electrode for supercapacitors [J].
Chou, Shu-Lei ;
Wang, Jia-Zhao ;
Chew, Sau-Yen ;
Liu, Hua-Kun ;
Dou, Shi-Xue .
ELECTROCHEMISTRY COMMUNICATIONS, 2008, 10 (11) :1724-1727
[5]   Opportunities and challenges for a sustainable energy future [J].
Chu, Steven ;
Majumdar, Arun .
NATURE, 2012, 488 (7411) :294-303
[6]   Asymmetric Supercapacitors Based on Graphene/MnO2 and Activated Carbon Nanofiber Electrodes with High Power and Energy Density [J].
Fan, Zhuangjun ;
Yan, Jun ;
Wei, Tong ;
Zhi, Linjie ;
Ning, Guoqing ;
Li, Tianyou ;
Wei, Fei .
ADVANCED FUNCTIONAL MATERIALS, 2011, 21 (12) :2366-2375
[7]   Electrochemical capacitance of Co3O4 nanowire arrays supported on nickel foam [J].
Gao, Yinyi ;
Chen, Shuli ;
Cao, Dianxue ;
Wang, Guiling ;
Yin, Jinling .
JOURNAL OF POWER SOURCES, 2010, 195 (06) :1757-1760
[8]   Electrical Transport Properties of Large, Individual NiCo2O4 Nanoplates [J].
Hu, Linfeng ;
Wu, Limin ;
Liao, Meiyong ;
Hu, Xinhua ;
Fang, Xiaosheng .
ADVANCED FUNCTIONAL MATERIALS, 2012, 22 (05) :998-1004
[9]   Hierarchical NiO nanobelt film array as an anode for lithium-ion batteries with enhanced electrochemical performance [J].
Hu, Ning ;
Tang, Zheng ;
Shen, Pei Kang .
RSC ADVANCES, 2018, 8 (47) :26589-26595
[10]   Three-dimensional sandwich-structured NiMn2O4@reduced graphene oxide nanocomposites for highly reversible Li-ion battery anodes [J].
Huang, Jiarui ;
Wang, Wei ;
Lin, Xirong ;
Gu, Cuiping ;
Liu, Jinyun .
JOURNAL OF POWER SOURCES, 2018, 378 :677-684