Issue 8, 2022

Realizing the compatibility of a Li metal anode in an all-solid-state Li−S battery by chemical iodine–vapor deposition

Abstract

Artificial solid-electrolyte interlayers (SEIs) are extensively used to improve the chemical interfacial stability at the Li/solid state electrolyte (SSE) interface. However, severe mechanical failures of the SEI, namely, Li dendrite penetration caused by uneven Li deposition and bending fracture arising from infinite Li volume change, still challenge the Li/SSE interface. Herein, an elongated rice-shaped nano-LiI crystal densely interweaving structured LiI layer is fabricated at the Li/SSE interface through a smart chemical iodine-vapor deposition method. The LiI layer with such a unique structure shows excellent toughness and high mechanical strength, avoiding mechanical failure accidents and maintaining a robust Li/SSE interface over long cycles. In addition, it shows satisfactory ionic conductivity and high stability against both Li metal and SSE. Consequently, the all-solid-state Li−S battery with a LiI layer exhibits a high discharge capacity of 1360 mA h g−1 at 0.2 mA cm−2 and a capacity retention of 80.6% after 150 cycles. Even under a harsh condition of high areal capacity of 1.35 mA h cm−2 and high temperature of 90 °C, the full cell presents excellent stability over 100 cycles.

Graphical abstract: Realizing the compatibility of a Li metal anode in an all-solid-state Li−S battery by chemical iodine–vapor deposition

Supplementary files

Article information

Article type
Communication
Submitted
27 Eph 2022
Accepted
05 Jul 2022
First published
05 Jul 2022

Energy Environ. Sci., 2022,15, 3236-3245

Realizing the compatibility of a Li metal anode in an all-solid-state Li−S battery by chemical iodine–vapor deposition

C. Duan, Z. Cheng, W. Li, F. Li, H. Liu, J. Yang, G. Hou, P. He and H. Zhou, Energy Environ. Sci., 2022, 15, 3236 DOI: 10.1039/D2EE01358D

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements