All-carbon-based cathode for a true high-energy-density Li-O-2 battery
- Authors
- Lim, Hee-Dae; Yun, Young Soo; Cho, Se Youn; Park, Kyu-Young; Song, Min Yeong; Jin, Hyoung-Joon; Kang, Kisuk
- Issue Date
- Apr-2017
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Silk; Pyroprotein; Carbon mesh; Air electrode; Current collector; Li-O-2 battery
- Citation
- CARBON, v.114, pp.311 - 316
- Indexed
- SCIE
SCOPUS
- Journal Title
- CARBON
- Volume
- 114
- Start Page
- 311
- End Page
- 316
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/187537
- DOI
- 10.1016/j.carbon.2016.12.014
- ISSN
- 0008-6223
- Abstract
- Li-O-2 batteries have a high theoretical energy density; however, their current cathode system based on a heavy metal framework strikingly diminishes their real energy density. Herein, we report the fabrication of all-carbon-based cathodes composed of conventional active carbon and a carbon mesh (CM) framework produced from waste silk fabric by simple pyrolysis. CM frameworks show a high electrical conductivity of similar to 150 S cm(-1), good tensile strength of 34.1 +/- 5.2 MPa, and a Young's modulus of 4.03 +/- 0.7 GPa, as well as a well-ventilated ordered macroporous structure. These all-carbon-based cathodes exhibit stable cycling and high energy densities of similar to 2600 Wh kg(-1) based on total electrode weight, which are 4-15 times higher than those of conventional air cathodes.
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