期刊
ELECTROCHIMICA ACTA
卷 200, 期 -, 页码 239-246出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2016.03.175
关键词
NiCo2O4; Graphitic carbon nitride; Supercapacitor; Energy storage; Nanocomposites
资金
- National Natural Science Foundation of China [21576034, 51125009, 91434118, 21521092]
- International S&T Cooperation Projects of Chongqing [CSTC2013gjhz90001]
- National Training Program of Innovation and Entrepreneurship for Undergraduates [201510611102]
- Innovation Training Programs for Undergraduates
- External Cooperation Program of BIC [121522KYS820150009]
- Hundred Talents Program, Chinese Academy of Sciences
Low cost, non-toxic nanomaterials and their controllable synthesis are highly demanded in the field of supercapacitors. In this work, nanoneedle and nanosheet-like porous NiCo2O4 architectures were directly fabricated on graphitic carbon nitride (g-C3N4), indicating structure dependence on their capacitive performances. Electrochemical performances show that nanoneedle-assembled NiCo2O4/g-C3N4 exhibits higher specific capacitance (253 F g (1) at a current density of 2 A g (1)), while nanosheetassembled NiCo2O4/g-C3N4 possesses a better cycling durability (101.4% capacitance after 1000 cycles) in a three-electrode configuration. Further studies indicate that these electrochemical differences are related to the structure and electrochemical impedance of nanocomposites. (C) 2016 Elsevier Ltd. All rights reserved.
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