Stackable, three dimensional carbon-metal oxide composite for high performance supercapacitors
- Authors
- Kim, Joo Hyun; Lee, Sangkyu; Choi, Junghyun; Song, Taeseup; Paik, Ungyu
- Issue Date
- Sep-2015
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- JOURNAL OF MATERIALS CHEMISTRY A, v.3, no.41, pp.20459 - 20464
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF MATERIALS CHEMISTRY A
- Volume
- 3
- Number
- 41
- Start Page
- 20459
- End Page
- 20464
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/156426
- DOI
- 10.1039/c5ta06266g
- ISSN
- 2050-7488
- Abstract
- We report a stackable all-solid-state supercapacitor based on three dimensional PPy-NiO/RGO-CNT electrodes. The electrodes were prepared by growing NiO nanowalls (NWs) on both sides of a freestanding RGO-CNT film with the hydrothermal method, followed by coatingwith conductive polypyrrole. The double-sided architecture of the NiO NWs on a carbon-based current collector suggests that the novel approach addresses the issue of low areal capacitance in supercapacitors. Furthermore, conductive polypyrrole renders fast electron transport through the two-dimensional structure of NiO NWs. With our 3D-designed electrodes, we successfully fabricated a stackable all-solid-state supercapacitor and thus achieved a high areal capacitance of 1948 mF cm(-2).
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