期刊
CHEMICAL ENGINEERING JOURNAL
卷 375, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2019.121988
关键词
Inkjet printing; RGO film; Ni(OH)(2) nanoflakes; Supercapacitor
资金
- National Natural Science Foundation of China [NSFC 51603053]
- Fundamental Research Funds of the Central University
- Defense Industrial Technology Development Program [JCKY2016604C006, JCKY2018604C011]
- National Key Research and Development Program of China [2016YFE0202700]
Inkjet printing of graphene film with the characteristic of low-cost, light weight, thin thickness and high conductivity has been gradually recognized. In this work, we report a novel route of preparation Ni(OH)(2)/RGO/Ni (OH)(2)/RGO composites electrode with layer-by-layer construction, which was synthesized by a reduplicative inkjet printing method and followed by a facile hydrothermal process. The first-layer RGO film with large surface area connects the first-layer Ni(OH)(2) and nickel foam as a new substrate without any addition. The second-layer RGO film plays an important role in bridging the lower and upper Ni(OH)(2) sheets, and arranging the upper Ni(OH)(2). The as-prepared electrode with controllable microstructures exhibits excellent electrochemical performance. An asymmetric supercapacitor (ASC) device is assembled with the Ni(OH)(2)/RGO/Ni(OH)(2)/RGO composites, which reveals remarkable energy density and power density (64.8 Wh kg(-1) at 800 W kg(-1) and 30.7 Wh kg(-1) at 16,000 W kg(-1)).
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