Selective Permeable Lithium-Ion Channels on Lithium Metal for Practical Lithium–Sulfur Pouch Cells

Chen PY, Yan C, Chen P, Zhang R, Yao YX, Peng HJ, Yan LT, Kaskel S, Zhang Q (2021)

Publication Type: Journal article

Publication year: 2021

Journal

Angewandte Chemie International Edition Wiley

Book Volume: 60

Pages Range: 18031-18036

Journal Issue: 33

DOI: 10.1002/anie.202101958

Abstract

Lithium metal batteries are considered a promising candidate for high-energy-density energy storage. However, the strong reducibility and high reactivity of lithium lead to low Coulombic efficiency when contacting oxidants, such as lithium polysulfide caused by the serious “shuttle effect” in lithium–sulfur batteries. Herein we design selectively permeable lithium-ion channels on lithium metal surface, which allow lithium ions to pass through by electrochemical overpotential, while the polysulfides are effectively blocked due to the much larger steric hindrance than lithium ions. The selective permeation of lithium ions through the channels is further elucidated by the molecular simulation and visualization experiment. Consequently, a prolonged cycle life of 75 cycles and high Coulombic efficiency of 99 % are achieved in a practical Li–S pouch cell with limited amounts of lithium and electrolyte, confirming the unique role the selective ion permeation plays in protecting highly reactive alkali metal anodes in working batteries.

Involved external institutions

Tsinghua University CN China (CN) University of Electronic Science and Technology of China (UESTC) / 电子科技大学 CN China (CN) Technische Universität Dresden DE Germany (DE)

How to cite

APA:

Chen, P.-Y., Yan, C., Chen, P., Zhang, R., Yao, Y.-X., Peng, H.-J.,... Zhang, Q. (2021). Selective Permeable Lithium-Ion Channels on Lithium Metal for Practical Lithium–Sulfur Pouch Cells. Angewandte Chemie International Edition, 60(33), 18031-18036. https://doi.org/10.1002/anie.202101958

MLA:

Chen, Peng-Yu, et al. "Selective Permeable Lithium-Ion Channels on Lithium Metal for Practical Lithium–Sulfur Pouch Cells." Angewandte Chemie International Edition 60.33 (2021): 18031-18036.

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