期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 735, 期 -, 页码 1722-1729出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2017.11.294
关键词
Wheat husk; Biomass-derived; NiO nanosheet; Supercapacitor
资金
- National Natural Science Foundation of China [51773165]
- Young Talent Support Plan of Xi'an Jiaotong University
NiO nanosheets were anchored at honeycomb amorphous porous carbon with ultrahigh surface area derived from activated wheat husk to obtain NiO@PC (porous carbon). The ultrahigh surface area of PC (634.4 m(2) g(-1)) promoted the attachment of NiO nanosheets, and this hierarchical nanostructure (NiO@PC) was beneficial for facilitating electron and electrolyte ion transport and accelerating the reversible redox reaction, which successfully demonstrated its high energy storage properties as supercapacitor. The NiO@PC composite exhibited brilliant capacitance of 500 F g(-1) at 10 A g(-1) after 8000 cycles. Moreover, as symmetric supercapacitor, NiO@PC exhibited high specific capacitance of 76 mF cm(-2) at 1 mA cm(-2). The excellent electrochemistry performance of NiO@PC brings the possibility of using biomass waste as electrode materials for energy storage. This process is facile and environmental friendly. (C) 2017 Elsevier B.V. All rights reserved.
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