Abstract
The space charge layer (SCL) is generally considered one of the origins of the sluggish interfacial lithium-ion transport in all-solid-state lithium-ion batteries (ASSLIBs). However, in-situ visualization of the SCL effect on the interfacial lithium-ion transport in sulfide-based ASSLIBs is still a great challenge. Here, we directly observe the electrode/electrolyte interface lithium-ion accumulation resulting from the SCL by investigating the net-charge-density distribution across the high-voltage LiCoO2/argyrodite Li6PS5Cl interface using the in-situ differential phase contrast scanning transmission electron microscopy (DPC-STEM) technique. Moreover, we further demonstrate a built-in electric field and chemical potential coupling strategy to reduce the SCL formation and boost lithium-ion transport across the electrode/electrolyte interface by the in-situ DPC-STEM technique and finite element method simulations. Our findings will strikingly advance the fundamental scientific understanding of the SCL mechanism in ASSLIBs and shed light on rational electrode/electrolyte interface design for high-rate performance ASSLIBs.
| Original language | English |
|---|---|
| Article number | 5889 |
| Journal | Nature Communications |
| Volume | 11 |
| Issue number | 1 |
| DOIs | |
| State | Published - 18 Nov 2020 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2020, The Author(s).
Funding
This work was supported by the National Key R&D Program of China (2018YFB0104300), the National Natural Science Foundation of China (21975274, U1706229, 11604241, 51971157, 21603161, 61705115, 11902144, 51971157, and 51761165012), the Young Elite Scientists Sponsorship Program by Tianjin, the Strategic Priority Research Program of the Chinese Academy of Sciences (XDA22010600), the National Natural Science Foundation for Distinguished Young Scholars of China (51625204), the Youth Innovation Promotion Association of CAS (2016193), the Key Research and Development Plan of Shandong Province, China (2018GGX104016), the Tianjin Science Fund for Distinguished Young Scholars (19JCJQJC61800), the Tianjin Municipal Science and Technology Commission (19JCQNJC15100), the National Program for Thousand Young Talents of China, DICP & QIBEBT Fund (Grant No. DICP and QIBEBT UN201707) and QIBEBT (ZZBS201808). The authors gratefully acknowledge Prof. Shuping Pang (Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China), Prof. Lin Gu and Dr. Qinghua Zhang (Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China) for the valuable discussions and kind help in revising the manuscript.
| Funders | Funder number |
|---|---|
| National Key R&D Program of China | 2018YFB0104300 |
| Key Technology Research and Development Program of Shandong | 2018GGX104016 |
| Natural Science Foundation for Distinguished Young Scholars of Anhui Province | 51625204 |
| National Natural Science Foundation of China | U1706229, 21975274, 11604241, 21603161, 51761165012, 61705115, 11902144, 51971157 |
| Chinese Academy of Sciences | XDA22010600 |
| Dalian Institute of Chemical Physics | QIBEBT UN201707, ZZBS201808 |
| Tianjin Science and Technology Committee | 19JCQNJC15100 |
| Youth Innovation Promotion Association | 2016193 |
| National Science Fund for Distinguished Young Scholars | 19JCJQJC61800 |
| Thousand Young Talents Program of China |
