In-situ microwave synthesis of metal-organic framework-derived mesoporous polymorphic CoSe2@N-doped carbon for supercapacitor applications

被引：14

作者：

Zhao, Jianjie ^{[1
]}

Zhang, Weijie ^{[1
]}

Guo, Xinli ^{[1
]}

Zhang, Zheng ^{[1
]}

Xie, Hang ^{[1
]}

Zheng, Yanmei ^{[1
]}

Wang, Shaohua ^{[1
]}

Xu, Qiang ^{[1
]}

Fu, Qiuping ^{[1
]}

Zhang, Tong ^{[2
]}

机构：

[1] Southeast Univ, Sch Mat Sci & Engn, Jiangsu Key Lab Adv Met Mat, Nanjing 211189, Peoples R China

[2] Southeast Univ, Sch Elect Sci & Engn, Nanjing 210096, Peoples R China

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2022年 / 287卷

关键词：

PolymorphicCoSe(2)@N-doped carbon; (CoSe2@N– C) electrode material; In-situ microwave synthesis; Cobalt organic framework (Co-MOF); Mesoporous structure; Asymmetric supercapacitor (ASC); NANOSHEET ARRAYS; ENERGY-STORAGE; COSE2; SHELL; ARCHITECTURE; DODECAHEDRA; NANOCAGES; NANOTUBE;

D O I：

10.1016/j.matchemphys.2022.126311

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The electrode material has played an essential role in the performance of supercapacitors. In this paper, we report a mesoporous polymorphic CoSe2@N-doped carbon (CoSe2@N-C) material synthesized by a facile and efficient in-situ microwave process derived from cobalt organic framework (Co-MOF). The as-synthesized CoSe2@N-C electrode shows polymorphism with a stable mesoporous morphology and exhibits enhanced electrochemical performance which is mainly attributed to the synergistic effects of N-doped carbon material, mesoporous structure and polymorphism resulting from selenization. Furthermore, the as-constructed asym-metric supercapacitor (ASC): CoSe2@N-C//graphene aerogel (GA) displays a maximum energy density of 42.2 Wh kg-1 at the power density of 791.6 W kg-1 and long-term cycling life with capacitance retention of 94.4% after 5000 charge-discharge cycles. The results have shown a great potential for the CoSe2@N-C electrode in SC applications.

引用

页数：10