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Facile synthesis of 3D MnNi-layered double hydroxides (LDH)/graphene composites from directly graphites for pseudocapacitor and their electrochemical analysis
- Lee, Ilbok;
- Jeong, Gyoung Hwa;
- An, Soyeon;
- Kim, Sang-Wook;
- Yoon, Songhun
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54초록
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.
키워드
Layered double hydroxides; Nanostructures; Electrochemistry; Graphene; Graphite; Supercapacitor; ASYMMETRIC SUPERCAPACITOR; ELECTRODE MATERIAL; NICKEL-MANGANESE; METAL-HYDROXIDES; WATER OXIDATION; GRAPHENE OXIDE; CAPACITORS; ARCHITECTURE; NANOSHEETS; BEHAVIOR
- 제목
- Facile synthesis of 3D MnNi-layered double hydroxides (LDH)/graphene composites from directly graphites for pseudocapacitor and their electrochemical analysis
- 저자
- Lee, Ilbok; Jeong, Gyoung Hwa; An, Soyeon; Kim, Sang-Wook; Yoon, Songhun
- 발행일
- 2018-01
- 유형
- Article
- 권
- 429
- 페이지
- 196 ~ 202
- 출판사
- ELSEVIER SCIENCE BV
- 발행국가
- 네덜란드
- 분량
- 7 페이지
- ISSN
- E 1873-5584
P 0169-4332