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A Novel CVD Growth of g‐C 3 N 4 Ultrathin Film on NiCo 2 O 4 Nanoneedles/Carbon Cloth as Integrated Electrodes for Supercapacitors
Author(s) -
Guo Wen,
Ming Shujun,
Chen Zhen,
Bi Jiajun,
Ma Yajuan,
Wang Jingyu,
Li Tao
Publication year - 2018
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201801045
Subject(s) - materials science , supercapacitor , electrode , nanotechnology , chemical vapor deposition , nanostructure , heterojunction , graphene , electrochemistry , carbon fibers , thermal stability , chemical engineering , optoelectronics , composite number , composite material , chemistry , engineering
Although g‐C 3 N 4 possesses many features such as a graphene‐like 2D π‐conjugated planar layered structure, high nitrogen content, excellent mechanical strength and flexibility, as well as high thermal and chemical stability, there are only a few studies on the exploration of g‐C 3 N 4 as active materials for supercapacitors. This could be largely attributed to the fact that the above advantages of g‐C 3 N 4 to hybrid with other materials are still not fully established. Herein, we successfully develop a facile low‐temperature CVD method to grow g‐C 3 N 4 ultrathin films with several nanometers thickness on the surface of NiCo 2 O 4 nanoneedles. Subsequently, a NiCo 2 O 4 nanoneedles@g‐C 3 N 4 ultrathin film core‐shell nanostructures/carbon cloth (NiCo 2 O 4 NNs@g‐C 3 N 4 /CC) integrated electrode was obtained. Thanks to the ultrathin film, a core‐shell nanostructure, as well as intrinsic features of g‐C 3 N 4 , the as‐obtained integrated electrode displays excellent electrochemical performance, exhibiting an areal capacitance of 2.83 F cm −2 as well as high cycling stability (5.88 % loss after 10 000 cycles). Our results clearly demonstrate that the g‐C 3 N 4 ultrathin film obtained through this facile CVD method developed has potential in hybridizing with other transition metal oxides as electrode materials for supercapacitors and, more importantly, this convenient synthesis method may also be widely used for other applications such as designing new heterojunction photocatalysts.