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Nanocrevass-Rich Carbon Fibers for Stable Lithium and Sodium Metal Anodes

40 Pages Posted: 15 Sep 2018 Sneak Peek Status: Review Complete

See all articles by Wooseok Go

Wooseok Go

Ulsan National Institute of Science and Technology (UNIST) - School of Energy and Chemical Engineering

Min-Ho Kim

Ulsan National Institute of Science and Technology (UNIST) - School of Energy and Chemical Engineering

Jehee Park

Ulsan National Institute of Science and Technology (UNIST) - School of Energy and Chemical Engineering

Chek Hai Lim

Ulsan National Institute of Science and Technology (UNIST) - School of Energy and Chemical Engineering

Youngsik Kim

Ulsan National Institute of Science and Technology (UNIST) - School of Energy and Chemical Engineering

Hyun-Wook Lee

Ulsan National Institute of Science and Technology (UNIST) - School of Energy and Chemical Engineering

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Abstract

Electrodes based on lithium/sodium metal are promising anodes for high-energy-density batteries because of their high theoretical capacity and low reduction potential. However, both lithium and sodium suffer from dendritic growth and large volume changes during long-term cycling. In this paper, we develop a novel electrode system with enhanced wettability by introducing nanocrevasses into carbon fiber scaffolds. These nanocrevasses facilitate the penetration of molten metal, enhancing physical and chemical interactions between the alkali metal and the carbon scaffold. Thus, the carbon fiber acts as a host scaffold to store Li/Na metal. The resulting Li/C and Na/C composites exhibit stable long-term cycling over hundreds of cycles. This strategy can also be applied to fabricate electrodes for seawater batteries. The proposed approach is suitable for scalable production using recycled metal waste. Thus, the addition of nanocrevasses to carbon fiber as a scaffold for alkali metals can generate environmentally friendly and cost-effective composites for practical electrode applications.

Suggested Citation

Go, Wooseok and Kim, Min-Ho and Park, Jehee and Lim, Chek Hai and Kim, Youngsik and Lee, Hyun-Wook, Nanocrevass-Rich Carbon Fibers for Stable Lithium and Sodium Metal Anodes (September 14, 2018). Available at SSRN: https://ssrn.com/abstract=3249471 or http://dx.doi.org/10.2139/ssrn.3249471
This is a paper under consideration at Cell Press and has not been peer-reviewed.

Wooseok Go

Ulsan National Institute of Science and Technology (UNIST) - School of Energy and Chemical Engineering

gil 50
Ulsan, 689-798
Korea, Republic of (South Korea)

Min-Ho Kim

Ulsan National Institute of Science and Technology (UNIST) - School of Energy and Chemical Engineering

gil 50
Ulsan, 689-798
Korea, Republic of (South Korea)

Jehee Park

Ulsan National Institute of Science and Technology (UNIST) - School of Energy and Chemical Engineering

gil 50
Ulsan, 689-798
Korea, Republic of (South Korea)

Chek Hai Lim

Ulsan National Institute of Science and Technology (UNIST) - School of Energy and Chemical Engineering

gil 50
Ulsan, 689-798
Korea, Republic of (South Korea)

Youngsik Kim

Ulsan National Institute of Science and Technology (UNIST) - School of Energy and Chemical Engineering

gil 50
Ulsan, 689-798
Korea, Republic of (South Korea)

Hyun-Wook Lee (Contact Author)

Ulsan National Institute of Science and Technology (UNIST) - School of Energy and Chemical Engineering

gil 50
Ulsan, 689-798
Korea, Republic of (South Korea)

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