Chemical Engineering Journal, volume 425, pages 130535

Insight on air-induced degradation mechanism of Li7P3S11 to design a chemical-stable solid electrolyte with high Li2S utilization in all-solid-state Li/S batteries

Publication typeJournal Article
Publication date2021-12-01
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor15.1
ISSN13858947, 03009467
General Chemistry
General Chemical Engineering
Industrial and Manufacturing Engineering
Environmental Chemistry
Abstract
• A mechanistically driven approach to chemical stability of Li 7 P 3 S 11 solid electrolyte. • LZPSOI exhibited high ionic conductivity 3.01 mS cm −1 and improved air-stability. • The structure–property correlation is scrutinized by ex-situ approaches. • The high utilization of Li 2 S active material has been achieved. • The LZPSOI-based ASSLSBs unveiled higher initial capacity and coulombic efficiency. The ideal solid-state electrolyte must have exceptional chemical and electrochemical stability, high ionic conductivity, lower interfacial resistance and high active material utilization. Inspired by discovering new lithium thiophosphate superionic conductors for all-solid-state Li/S batteries (ASSLSBs), we designed and explored the local structure of Li 6.95 Zr 0.05 P 2.9 S 10.8 O 0.1 I 0.4 (LZPSOI) solid-state electrolyte, which owns a high ionic conductivity of 3.01 mS cm −1 with improved air-stability at RT. The structure–property correlation behavior of the chemical stability of LZPSOI electrolyte was sequentially premeditated by a combination of ex-situ XRD, MAS-NMR, XPS and SEM. A mechanistically driven approach has been extensively evaluated that the chemical stability of Li 7 P 3 S 11 could be enhanced via oxide doping, in which S 2- was partly replaced by O 2– in conductive structural units to yield POS 3 3- and P 2 OS 6 4- which was confirmed by XPS and 31 P MAS-NMR. The ASSLSBs assembled with LZPSOI electrolyte exhibited a remarkable initial discharge capacity of 932 mAh g −1 and a coulombic efficiency of 99.2% under 0.064 mA cm −2 at RT, compared to Li 7 P 3 S 11 counterpart. The exceptional cyclic performance was benefitted from higher electronic and ionic conductivities with LiI additive and additional reaction sites, which collectively enhanced the utilization of Li 2 S active material. This exploration gives birth to a potential contender as a solid-state electrolyte with high ionic conductivity and chemical stability to apply for next-generation ASSLSBs.

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Tufail M. K. et al. Insight on air-induced degradation mechanism of Li7P3S11 to design a chemical-stable solid electrolyte with high Li2S utilization in all-solid-state Li/S batteries // Chemical Engineering Journal. 2021. Vol. 425. p. 130535.
GOST all authors (up to 50) Copy
Tufail M. K., Ahmad N., Zhou L., Faheem M., Yang L., Chen R., Yang W. Insight on air-induced degradation mechanism of Li7P3S11 to design a chemical-stable solid electrolyte with high Li2S utilization in all-solid-state Li/S batteries // Chemical Engineering Journal. 2021. Vol. 425. p. 130535.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1016/j.cej.2021.130535
UR - https://doi.org/10.1016/j.cej.2021.130535
TI - Insight on air-induced degradation mechanism of Li7P3S11 to design a chemical-stable solid electrolyte with high Li2S utilization in all-solid-state Li/S batteries
T2 - Chemical Engineering Journal
AU - Tufail, Muhammad Khurram
AU - Ahmad, Niaz
AU - Zhou, Lei
AU - Faheem, Muhammad
AU - Yang, Le
AU - Chen, Renjie
AU - Yang, Wen
PY - 2021
DA - 2021/12/01 00:00:00
PB - Elsevier
SP - 130535
VL - 425
SN - 1385-8947
SN - 0300-9467
ER -
BibTex
Cite this
BibTex Copy
@article{2021_Tufail,
author = {Muhammad Khurram Tufail and Niaz Ahmad and Lei Zhou and Muhammad Faheem and Le Yang and Renjie Chen and Wen Yang},
title = {Insight on air-induced degradation mechanism of Li7P3S11 to design a chemical-stable solid electrolyte with high Li2S utilization in all-solid-state Li/S batteries},
journal = {Chemical Engineering Journal},
year = {2021},
volume = {425},
publisher = {Elsevier},
month = {dec},
url = {https://doi.org/10.1016/j.cej.2021.130535},
pages = {130535},
doi = {10.1016/j.cej.2021.130535}
}
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