University of California, Berkeley - Energy Storage and Distributed Resources Division; University of California, Berkeley - Department of Chemical and Biomolecular Engineering
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)
Xi'an Jiaotong University (XJTU), School of Material Science and Engineering, Center for Advancing Materials Performance from the Nanoscale (CAMP-Nano)
Xi'an Jiaotong University (XJTU), School of Material Science and Engineering, Center for Advancing Materials Performance from the Nanoscale (CAMP-Nano)
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.
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 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 version of the paper has not been formally peer reviewed.
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 Jiaotong University (XJTU), School of Material Science and Engineering, Center for Advancing Materials Performance from the Nanoscale (CAMP-Nano)
Xi'an Jiaotong University (XJTU), School of Material Science and Engineering, Center for Advancing Materials Performance from the Nanoscale (CAMP-Nano)
Subscribe to this free journal for more curated articles on this topic
FOLLOWERS
20
PAPERS
9,156
Feedback
Feedback to SSRN
If you need immediate assistance, call 877-SSRNHelp (877 777 6435) in the United States, or +1 212 448 2500 outside of the United States, 8:30AM to 6:00PM U.S. Eastern, Monday - Friday.