Issue 10, 2019

A theoretical approach to address interfacial problems in all-solid-state lithium ion batteries: tuning materials chemistry for electrolyte and buffer coatings based on Li6PA5Cl hali-chalcogenides

Abstract

Even though ultra-fast Li+ ion conductors based on sulfides such as LGPS and Li6PS5Cl have been developed in recent years, rather limited advancement has been made towards developing all-solid-state lithium ion batteries due to serious interface-related problems. Here in this work, we have carried out extensive fundamental modelling to formulate a system of materials based on hali-chalcogenide Li6PA5Cl argyrodites (A is the site for chalcogen species), so that materials with chemically and structurally compatible characteristics can be used as both a superb electrolyte and excellent buffer coatings over electrode surfaces. All solid-state-batteries (ASSBs) in the form of Li|Li6PO4SCl|Li6PO5Cl|Li0.25MnO2 are thus recommended, so that buffer coatings based on O-rich hali-chalcogenides help avoid interfacial reactions, owing to their high stability with respect to the cathodes and greatly enhanced chemical potential with respect to Li/Li+. Such batteries fundamentally have high mechanical and electrochemical stability, thus enabling high performance and great endurance to operational voltage.

Graphical abstract: A theoretical approach to address interfacial problems in all-solid-state lithium ion batteries: tuning materials chemistry for electrolyte and buffer coatings based on Li6PA5Cl hali-chalcogenides

Supplementary files

Article information

Article type
Paper
Submitted
20 Nov 2018
Accepted
05 Jan 2019
First published
10 Jan 2019

J. Mater. Chem. A, 2019,7, 5239-5247

A theoretical approach to address interfacial problems in all-solid-state lithium ion batteries: tuning materials chemistry for electrolyte and buffer coatings based on Li6PA5Cl hali-chalcogenides

H. Xu, Y. Yu, Z. Wang and G. Shao, J. Mater. Chem. A, 2019, 7, 5239 DOI: 10.1039/C8TA11151K

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