期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 5, 期 1, 页码 196-205出版社
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.6b01249
关键词
Sandwich-like; Carbon; Nickel manganese oxide; Supercapacitors; Lithium-ion batteries
资金
- Thousand Young Talents Program of the Chinese Central Government [0220002102003]
- National Natural Science Foundation of China (NSFC) [21373280, 21403019]
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- Fundamental Research Funds for the Central Universities [0301005202017]
- Hundred Talents Program at Chongqing University [0903005203205]
In this report, novel three-dimensional sandwiched NiMn2O4/C arrays on Ni foam are first synthesized through a general and simple synthetic approach. In this process, the glucose and ultrathin NiMn layered double hydroxide arrays are used as green carbon source and sacrificial templates, respectively. This advanced nanoarchitecture obtained here can not only improve the electronic conductivity due to carbon coating and conductive substrates but can also prevent NiMn2O4 nanoparticles from agglomeration and falling off. The as-prepared sandwiched NiMn2O4/C arrays are more desirable for application in energy storage. When evaluated as supercapacitors, they exhibit ultrahigh specific capacitance (2679 F/g at 1 A/g) and superior stability (2% decay after 6000 cycles). On the other hand, because of the unique structure design, they demonstrate excellent capacity (1346 mAh/g at 500 mA/g), remarkable rate performance, and cyclability for lithium-ion batteries.
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