Activated Graphene Deposited on Porous Cu Mesh for Supercapacitors
- Authors
- Lim, TaeGyeong; Kim, TaeYoung; Suk, Ji Won
- Issue Date
- Apr-2021
- Publisher
- MDPI
- Keywords
- Activated graphene; Ammonia; Copper mesh; Supercapacitor
- Citation
- NANOMATERIALS, v.11, no.4
- Journal Title
- NANOMATERIALS
- Volume
- 11
- Number
- 4
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/81075
- DOI
- 10.3390/nano11040893
- ISSN
- 2079-4991
- Abstract
- A porous Cu (P-Cu) mesh was used as a current collector and its morphological effect on the supercapacitor performance was investigated. A porous surface was obtained by thermally annealing the Cu mesh using ammonia gas. Hierarchically porous activated graphene (AG) with a high specific surface area (SSA) was deposited on the P-Cu mesh using electrophoretic deposition, aided by graphene oxide (GO). GO was thermally converted to electrically conductive reduced graphene oxide (rGO). The AG/rGO that was deposited on the P-Cu mesh achieved a high specific capacitance of up to 140.0 F/g and a high energy density of up to 3.11 Wh/kg at a current density of 2 A/g in 6 M KOH aqueous electrolyte. The high SSA of AG and the porous surface morphology of the Cu mesh allowed efficient electric double-layer formation and charge transport. This work offers an alternative to improve supercapacitors by combining a porous metallic current collector with porous AG. © 2021 by the authors.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - 공과대학 > 신소재공학과 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/81075)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.