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Frontiers in Chemistry, volume 10

Synthesis and Modification of Tetrahedron Li10.35Si1.35P1.65S12via Elemental Doping for All-Solid-State Lithium Batteries

Yuanzhong Lin 1
Jian Chen 1
Jiawei Yan 1
Zhuang Yanhua 1
Hengyi Lu 2
Chenyang Zhao 1
1
 
College of Chemistry and Environmental Engineering, China
2
 
Walker Department of Mechanical Engineering, United States
Publication typeJournal Article
Publication date2022-03-22
Quartile SCImago
Q1
Quartile WOS
Q2
Impact factor5.5
ISSN22962646, 22962646
General Chemistry
Abstract

Solid-state electrolyte (SSE), as the core component of solid-state batteries, plays a critical role in the performance of the batteries. Currently, the development of SSE is still hindered by its high price, low ionic conductivity, and poor interface stability. In this work, we report the tailored synthesis of a high ionic conductive and low cost sulfide SSE for all-solid-state lithium batteries. The Li10.35Si1.35P1.65S12 with favorable tetragonal structure was synthesis by increasing the concentration of Si4+, which shows an ionic conductivity of 4.28 × 10−3 S cm−1 and a wide electrochemical stability window of up to 5 V. By further modifying the composition of the electrolyte via ionic doping, the ionic conductivity of Li10.35Si1.35P1.65S12 can be further enhanced. Among them, the 1% Co4+-doped Li10.35Si1.35P1.65S12 shows the highest ionic conductivity of 6.91 × 10−3 S cm−1, 40% higher than the undoped one. This can be attributed to the broadened MS4 tetrahedrons and increased Li+ concentration. As a demonstration, an all-solid-state Li metal battery was assembled using TiS2 as the cathode and 1% Co4+-doped Li10.35Si1.35P1.65S12 as the electrolyte, showing capacity retention of 72% at the 110th cycle. This strategy is simple and can be easily extended for the construction of other high-performance sulfide SSEs.

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Lin Y. et al. Synthesis and Modification of Tetrahedron Li10.35Si1.35P1.65S12via Elemental Doping for All-Solid-State Lithium Batteries // Frontiers in Chemistry. 2022. Vol. 10.
GOST all authors (up to 50) Copy
Lin Y., Chen J., Yan J., Yanhua Z., Lu H., Zhao C. Synthesis and Modification of Tetrahedron Li10.35Si1.35P1.65S12via Elemental Doping for All-Solid-State Lithium Batteries // Frontiers in Chemistry. 2022. Vol. 10.
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RIS Copy
TY - JOUR
DO - 10.3389/fchem.2022.851264
UR - https://doi.org/10.3389/fchem.2022.851264
TI - Synthesis and Modification of Tetrahedron Li10.35Si1.35P1.65S12via Elemental Doping for All-Solid-State Lithium Batteries
T2 - Frontiers in Chemistry
AU - Lin, Yuanzhong
AU - Chen, Jian
AU - Yan, Jiawei
AU - Yanhua, Zhuang
AU - Lu, Hengyi
AU - Zhao, Chenyang
PY - 2022
DA - 2022/03/22 00:00:00
PB - Frontiers Media S.A.
VL - 10
SN - 2296-2646
SN - 2296-2646
ER -
BibTex
Cite this
BibTex Copy
@article{2022_Lin,
author = {Yuanzhong Lin and Jian Chen and Jiawei Yan and Zhuang Yanhua and Hengyi Lu and Chenyang Zhao},
title = {Synthesis and Modification of Tetrahedron Li10.35Si1.35P1.65S12via Elemental Doping for All-Solid-State Lithium Batteries},
journal = {Frontiers in Chemistry},
year = {2022},
volume = {10},
publisher = {Frontiers Media S.A.},
month = {mar},
url = {https://doi.org/10.3389/fchem.2022.851264},
doi = {10.3389/fchem.2022.851264}
}
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