Scalable and controllable synthesis of multi-shell hollow carbon microspheres for high-performance supercapacitors

He, Yong1; Xiang, Kaixiong1; Wang, Yanfang2; Zhou, Wei1; Zhu, Yirong1; Xiao, Li1; Chen, Wenhao1; Chen, Xianhong1; Chen, Han1; Cheng, Hua2; Lu, Zhouguang2

2019-12

10.1016/j.carbon.2019.08.022

CARBON   影响因子和分区

0008-6223

1873-3891

It is a great challenge to enhance the specific capacitance while without sacrificing the remarkable rate capability and long-term cycle durability of carbon materials for supercapacitors. Here we present a novel spherical and multi-shell hollow carbon material with tunable shell numbers and N-doping derived from a sequential synthetic route recombining hydrothermal nucleation, carbonization, and etching. The very special features, including uniform in shape and size, hollow structure, core/multi-shell architecture, hierarchical porous structures, and nitrogen doping, facilitated high specific surface area, abundant active sites, fast ion diffusions kinetics and good electrical conductivity. As a result, very superior electrochemical performance with an excellent combination of high specific capacitance (318.5 F g(-1)), and outstanding rate capability (the capacity retention ratio was more than 80% when the current density was raised from 0.1 to 10 A g(-1)), and very stable cycling (more than 94% capacity retention after 50000 cycles at 1 A g(-1)) has been achieved. This hierarchical multi-shell strategy opens a new avenue for design of high performance electrode for next-generation energy storage devices. (C) 2019 Elsevier Ltd. All rights reserved.

Supercapacitors Hollow carbon microsphere Core/multi-shell structures Hierarchical porous architectures Nitrogen-doping

SCI ; EI

英语

通讯

Basic Research Project of the Science and Technology Innovation Commission of Shenzhen[JCYJ20170817110251498] ; Basic Research Project of the Science and Technology Innovation Commission of Shenzhen[JCYJ20170412153139454]

Chemistry ; Materials Science

Chemistry, Physical ; Materials Science, Multidisciplinary

WOS:000488203600038

PERGAMON-ELSEVIER SCIENCE LTD

20193307312269

Capacitance ; Carbon ; Carbonization ; Computer architecture ; Etching ; Microspheres ; Organic polymers ; Shells (structures)

Structural Members and Shapes:408.2 ; Electricity: Basic Concepts and Phenomena:701.1 ; Chemical Reactions:802.2 ; Chemical Products Generally:804 ; Organic Polymers:815.1.1

CHEMISTRY

Web of Science

1.Hunan Univ Technol, Sch Met & Mat Engn, Zhuzhou 412007, Hunan, Peoples R China
2.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Guangdong Prov Key Lab Energy Mat Elect Power, Shenzhen 518055, Guangdong, Peoples R China

He, Yong,Xiang, Kaixiong,Wang, Yanfang,et al. Scalable and controllable synthesis of multi-shell hollow carbon microspheres for high-performance supercapacitors[J]. CARBON,2019,154:330-341.

He, Yong.,Xiang, Kaixiong.,Wang, Yanfang.,Zhou, Wei.,Zhu, Yirong.,...&Lu, Zhouguang.(2019).Scalable and controllable synthesis of multi-shell hollow carbon microspheres for high-performance supercapacitors.CARBON,154,330-341.

He, Yong,et al."Scalable and controllable synthesis of multi-shell hollow carbon microspheres for high-performance supercapacitors".CARBON 154(2019):330-341.