Heterogeneous Contraction-Mediated Asymmetric Carbon Colloids

被引:26
作者
Liu, Zhenhui [1 ]
Song, Hao [2 ]
Zhao, Yunlong [3 ]
He, Ruhan [1 ]
Meng, Jiashen [1 ]
Yu, Qiang [1 ]
Owusu, Kwadwo Asare [1 ]
Yu, Chengzhong [2 ]
Zhao, Dongyuan [4 ]
Zhou, Liang [1 ]
Mai, Liqiang [1 ]
机构
[1] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China
[2] Univ Queensland, Australian Inst Bioengn & Nanotechnol, Brisbane, Qld 4072, Australia
[3] Univ Surrey, Adv Technol Inst, Guildford GU2 7XH, Surrey, England
[4] Fudan Univ, Dept Chem, Shanghai 200433, Peoples R China
来源
ACS MATERIALS LETTERS | 2019年 / 1卷 / 03期
基金
国家重点研发计划;
关键词
MESOPOROUS CARBON; HOLLOW SPHERES; NANOSPHERES; NANOPARTICLES; CAPACITANCE; NUCLEATION;
D O I
10.1021/acsmaterialslett.9b00179
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Introducing asymmetry in carbon colloids can enrich their already broad merits; however, the tailored synthesis of asymmetric carbon colloids remains a great challenge. Herein, we report the synthesis of asymmetric semi-yolk-shell carbon spheres (semi-YSCS) with rich N-doping (3.9 at%), raspberry-like rough surface, abundant mesopores, and uniform particle size (similar to 600 nm). An interface-induced heterogeneous contraction mechanism is proposed. The unique structural features endow the semi-YSCS a high specific capacitance (283 F g(-1) at 1 A g(-1)), favorable cycling stability, and superior rate performance in aqueous supercapacitors. This work provides new insights into the rational design of asymmetric carbon colloids.
引用
收藏
页码:290 / 296
页数:13
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