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Three-Dimensionally Aligned Sulfur Electrodes by Directional Freeze Tape Casting

30 Pages Posted: 1 May 2019 Sneak Peek Status: Review Complete

See all articles by Yoon Hwa

Yoon Hwa

University of California, Berkeley - Energy Storage and Distributed Resources Division; University of California, Berkeley - Department of Chemical and Biomolecular Engineering

Eongyu Yi

University of California, Berkeley - Energy Storage and Distributed Resources Division

Hao Shen

University of California, Berkeley - Advanced Light Source; Xi'an Jiaotong University (XJTU), School of Material Science and Engineering, Center for Advancing Materials Performance from the Nanoscale (CAMP-Nano)

Younghoon Sung

University of California, Berkeley - Department of Chemical and Biomolecular Engineering

Jiawei Kou

Xi'an Jiaotong University (XJTU), School of Material Science and Engineering, Center for Advancing Materials Performance from the Nanoscale (CAMP-Nano)

Kai Chen

Xi'an Jiaotong University (XJTU), School of Material Science and Engineering, Center for Advancing Materials Performance from the Nanoscale (CAMP-Nano)

Dilworth Y. Parkinson

University of California, Berkeley - Advanced Light Source

Marca M. Doeff

University of California, Berkeley - Energy Storage and Distributed Resources Division

Elton Cairns

University of California, Berkeley - Department of Chemical and Biomolecular Engineering; Lawrence Berkeley National Laboratory

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Abstract

Rational design of sulfur electrodes is exceptionally important in enabling a high specific energy lithium/sulfur cell. Constructing a continuous pore structure of the sulfur electrode that enables facile lithium ion transport into the electrode and mitigates the reconstruction of sulfur is a key factor for enhancing the electrochemical performance. Here, we report a three-dimensionally (3D) aligned sulfur electrode prepared by directional freeze tape casting. The 3D aligned sulfur-graphene oxide (S-GO) electrode consisting of a few micron-thick S-GO layers with 10-20 μm interlayer spacings demonstrates significant improvement in the performance of the Li/S cell. Moreover, the freeze tape cast graphene oxide electrode exhibits homogenous reconfiguration behaviour in the polysulfide catholyte cell tests, and demonstrated extended cycling capability with only 4% decay of the specific capacity over 200 cycles. This work emphasizes the critical importance of proper structural design for sulfur-carbonaceous composite electrodes.

Keywords: Li/S cells; Freeze tape casting; Porous electrode; Three-dimensional pore alignment

Suggested Citation

Hwa, Yoon and Yi, Eongyu and Shen, Hao and Sung, Younghoon and Kou, Jiawei and Chen, Kai and Parkinson, Dilworth Y. and Doeff, Marca M. and Cairns, Elton, Three-Dimensionally Aligned Sulfur Electrodes by Directional Freeze Tape Casting (April 25, 2019). Available at SSRN: https://ssrn.com/abstract=3378009 or http://dx.doi.org/10.2139/ssrn.3378009
This is a paper under consideration at Cell Press and has not been peer-reviewed.

Yoon Hwa

University of California, Berkeley - Energy Storage and Distributed Resources Division

Berkeley, CA
United States

University of California, Berkeley - Department of Chemical and Biomolecular Engineering

Berkeley, CA
United States

Eongyu Yi

University of California, Berkeley - Energy Storage and Distributed Resources Division

Berkeley, CA
United States

Hao Shen

University of California, Berkeley - Advanced Light Source

Berkeley, CA
United States

Xi'an Jiaotong University (XJTU), School of Material Science and Engineering, Center for Advancing Materials Performance from the Nanoscale (CAMP-Nano)

Xi’an
China

Younghoon Sung

University of California, Berkeley - Department of Chemical and Biomolecular Engineering

Berkeley, CA
United States

Jiawei Kou

Xi'an Jiaotong University (XJTU), School of Material Science and Engineering, Center for Advancing Materials Performance from the Nanoscale (CAMP-Nano)

Xi’an
China

Kai Chen

Xi'an Jiaotong University (XJTU), School of Material Science and Engineering, Center for Advancing Materials Performance from the Nanoscale (CAMP-Nano)

Xi’an
China

Dilworth Y. Parkinson

University of California, Berkeley - Advanced Light Source

Berkeley, CA
United States

Marca M. Doeff

University of California, Berkeley - Energy Storage and Distributed Resources Division ( email )

Berkeley, CA
United States

Elton Cairns (Contact Author)

University of California, Berkeley - Department of Chemical and Biomolecular Engineering ( email )

Berkeley, CA
United States

Lawrence Berkeley National Laboratory ( email )

One Cyclotron Road
MS 70RO108B
Berkeley, CA 94720
United States
510-486-5028 (Phone)
510-486-7303 (Fax)

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