A general approach to 3D porous CQDs/MxOy (M = Co, Ni) for remarkable performance hybrid supercapacitors
A general approach to 3D porous CQDs/MxOy (M = Co, Ni) for remarkable performance hybrid supercapacitors
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用于实现卓越性能混合超级电容器的 3D 多孔 CQD/MxOy(M = Co、Ni)的通用方法
DOI:
10.1016/j.cej.2017.05.127
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发表时间:
2017-10
影响因子:
15.1
通讯作者:
Changhua An
中科院分区:
文献类型:
--
作者:
Guijuan Wei;Xixia Zhao;Kun Du;Zhaojie Wang;Ming Liu;Shuo Zhang;Shutao Wang;Jun Zhang;Changhua An
To date, zero-dimensional carbon quantum dots (CQDs), as a new carbon nanomaterials, have attracted attention in the improvement of the electrical conductivity for electrode materials. However, few attempts have been made to the use of CQDs as the structure-directing agent for the assembly of functional micro/nanoelectrodes. Herein, we have developed a general, and simple strategy to fabricate 3D porous hierarchical carbon quantum dots (CQDs)/MxOy(M = Co, Ni) composite nanostructures from thermolysis of corresponding CQDs/M(OH)y, where CQDs play crucial role as a structure-directing agent in tuning the morphologies of the M(OH)y. With the merits of the large electroactive surface area, superior electronic conductivity of CQDs, and fruitful porous structure, the as-fabricated battery-type electrode materials present amazing supercapacitor performance. For example, the as-made porous hierarchical CQDs/Co3O4nanoarchitectures exhibited remarkable electrochemical performance with 1603 F g−1at 1 A g−1, excellent rate capacity of 70.6% from 1 to 100 A g−1, superior cycling ability (97.0% capacity remained after 2000 cycles). Furthermore, the CQDs/Co3O4//AC hybrid supercapacitor (HSC) exhibits a high specific capacity of 210.4 F g−1with 74.8 W h kg−1. The present work can be enlarged for the design of other functional 3D hierarchical micro-nanostructures in the fields of energy storage, catalysis, and photo/electrocatalysis.
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DOI:
10.1039/c3ee41776j
发表时间:
2013-11
期刊:
Energy & Environmental Science
影响因子:
--
作者:
Zhu, Yirong;Ji, Xiaobo;Pan, Chenchi;Sun, Qingqing;Song, Weixin;Fang, Laibing;Chen, Qiyuan;Banks, Craig E.
通讯作者:
Banks, Craig E.
影响因子:
--
作者:
Lin Ye;Lijun Zhao;Hangzhou Zhang;Bo Zhang;Huiyuan Wang
通讯作者:
Lin Ye;Lijun Zhao;Hangzhou Zhang;Bo Zhang;Huiyuan Wang
影响因子:
41.2
作者:
Brezesinski, Torsten;Wang, John;Dunn, Bruce
通讯作者:
Dunn, Bruce
影响因子:
19
作者:
Zhao, Yan;Hu, Linfeng;Wu, Limin
通讯作者:
Wu, Limin
影响因子:
9.9
作者:
Liu, Bin;Wang, Xianfu;Shen, Guozhen
通讯作者:
Shen, Guozhen