High-capacitance activated bio-carbons with controlled pore size distribution for sustainable energy storage
- Authors
- Kim, Yong Il; Lee, Yun Jung; Yoo, Jungjoon; Kim, Jong-Huy
- Issue Date
- Oct-2019
- Publisher
- ELSEVIER
- Keywords
- Electrode material; Energy storage material; Electrochemical reaction; Activated carbon; Electric double-layer capacitor; Sustainable energy storage
- Citation
- JOURNAL OF POWER SOURCES, v.438, pp 1 - 9
- Pages
- 9
- Indexed
- SCI
SCIE
SCOPUS
- Journal Title
- JOURNAL OF POWER SOURCES
- Volume
- 438
- Start Page
- 1
- End Page
- 9
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/2137
- DOI
- 10.1016/j.jpowsour.2019.226969
- ISSN
- 0378-7753
1873-2755
- Abstract
- Depletion of fossil-fuel energy resources creates a demand for sustainable energy technologies and therefore necessitates the development of sustainable energy storage devices with sustainable materials, eco-efficient synthetic methods, and robust cycle life. Electric double layer capacitors are potential candidates for sustainable energy storage because they usually employ carbon-based electrode materials with semi-permanent lifetimes and high powers. Although various carbon materials are commercially available, new methods are needed to produce eco-efficient synthesized carbon materials with high performances. Herein, we introduce an effective strategy that uses biomaterials as carbon sources and adopts a reusable KOH solution soaking method for the activation process to reduce KOH consumption, which includes a pore-size control process to enhance electrochemical performances. The obtained bio-carbons exhibit specific capacitances (160.6 and 151.2 F g−1 in aqueous and organic electrolytes, respectively) superior to that of commercially available activated carbon (~80 F g−1), which is attributed to the synergetic effect between the pore-size-controlled activated carbon for efficient ion transport and the well-matched electrolyte. Our strategy provides a versatile method for the scalable fabrication of sustainable energy storage materials and is promising for the development of high-performance supercapacitors.
- Files in This Item
-
Go to Link
- Appears in
Collections - 서울 공과대학 > 서울 에너지공학과 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/2137)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.