TY - JOUR
T1 - Unraveling the Correlation between Structures of Carbon Nanospheres Derived from Polymeric Spheres and Their Electrochemical Performance to Achieve High-Rate Supercapacitors
AU - Xu, Fei
AU - Qiu, Yuqian
AU - Jiang, Guangshen
AU - Ding, Baichuan
AU - Li, Jingyuan
AU - Liu, Qianhui
AU - Wu, Jianping
AU - Xu, Xiaosa
AU - Wang, Hongqiang
AU - Liang, Yeru
N1 - Publisher Copyright:
© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2019/9/1
Y1 - 2019/9/1
N2 - Understanding correlation between the nanostructure of porous carbons and their ion transport behavior is critical for achieving high-performance supercapacitors. Herein, the relationship between size and shell thickness of carbon nanospheres (CNSs) and capacitive electrochemical performance is clarified. Structural uniform CNSs with controlled diameters, prepared via template-free interfacial copolymerization, are emerging as an ideal platform for investigating the ion transport behavior. It is found that ionic transport is significantly enhanced while the introduction of hollow cores with thinner shell, by virtue of the hollow nanopore-accelerated mass transport to reduce ion diffusion length. The proof-of-concept supercapacitors, constituted of carbons with diameter and shell thickness of 91 and 28 nm, respectively, can maintain highest capacitance retention ratio of 86% at a high sweep rate of 300 mVs−1, also far outperforming the commercial activated carbon in terms of capacitance, rate capability, and surface efficiency, promising a brilliant application.
AB - Understanding correlation between the nanostructure of porous carbons and their ion transport behavior is critical for achieving high-performance supercapacitors. Herein, the relationship between size and shell thickness of carbon nanospheres (CNSs) and capacitive electrochemical performance is clarified. Structural uniform CNSs with controlled diameters, prepared via template-free interfacial copolymerization, are emerging as an ideal platform for investigating the ion transport behavior. It is found that ionic transport is significantly enhanced while the introduction of hollow cores with thinner shell, by virtue of the hollow nanopore-accelerated mass transport to reduce ion diffusion length. The proof-of-concept supercapacitors, constituted of carbons with diameter and shell thickness of 91 and 28 nm, respectively, can maintain highest capacitance retention ratio of 86% at a high sweep rate of 300 mVs−1, also far outperforming the commercial activated carbon in terms of capacitance, rate capability, and surface efficiency, promising a brilliant application.
KW - carbon nanospheres
KW - hollow cores
KW - interfacial copolymerization
KW - ion transport
KW - supercapacitors
UR - http://www.scopus.com/inward/record.url?scp=85061011757&partnerID=8YFLogxK
U2 - 10.1002/marc.201800770
DO - 10.1002/marc.201800770
M3 - 文章
C2 - 30698904
AN - SCOPUS:85061011757
SN - 1022-1336
VL - 40
JO - Macromolecular Rapid Communications
JF - Macromolecular Rapid Communications
IS - 17
M1 - 1800770
ER -