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Facile synthesis of 3D MnNi-layered double hydroxides (LDH)/graphene composites from directly graphites for pseudocapacitor and their electrochemical analysis
- Issue Date
- Jan-2018
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Layered double hydroxides; Nanostructures; Electrochemistry; Graphene; Graphite; Supercapacitor
- Citation
- APPLIED SURFACE SCIENCE, v.429, pp 196 - 202
- Pages
- 7
- Journal Title
- APPLIED SURFACE SCIENCE
- Volume
- 429
- Start Page
- 196
- End Page
- 202
- ISSN
- 0169-4332
1873-5584
- Abstract
- Herein, MnNi-layered double hydroxides (LDH) were imbibed within the interlayers of graphene nanosheets. The anionic surfactant, sodium dodecyl sulfate played a role of graphite exfoliator adding interaction with metal cations. Using this process, layered MnNi-LDH-graphene nanocomposite was prepared without formation of graphene oxide. When applied into pseudocapacitor electrode, LDH-graphene with optimal ratio between Mn and Ni exhibited very stable cycle with 90% at 1400 cycles and high energy 47.29 Wh kg(-1) at the power density of 7473 W kg(-1), which was attributed to highly stable layered LDH structure within conductive graphene layers. (C) 2017 Elsevier B.V. All rights reserved.
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