Facile synthesis of 3D MnNi-layered double hydroxides (LDH)/graphene composites from directly graphites for pseudocapacitor and their electrochemical analysis
| Autor: | Ilbok Lee, Songhun Yoon, Gyoung Hwa Jeong, So-Yeon An, Sang-Wook Kim |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Inorganic chemistry Oxide General Physics and Astronomy 02 engineering and technology engineering.material 010402 general chemistry Electrochemistry 01 natural sciences law.invention chemistry.chemical_compound law Graphite Graphene oxide paper Nanocomposite Graphene Layered double hydroxides Surfaces and Interfaces General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Surfaces Coatings and Films chemistry Pseudocapacitor engineering 0210 nano-technology |
| Zdroj: | Applied Surface Science. 429:196-202 |
| ISSN: | 0169-4332 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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