| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Functional Nanomaterials 2020: Translating Innovation into Pioneering Technologies
|
| Presentation Title |
N-51: Solid-state Electrolytes for Lithium–selenium Disulfide Batteries with Enhanced Safety |
| Author(s) |
Panpan Dong, Xiahui Zhang, Younghwan Cha, Min-Kyu Song |
| On-Site Speaker (Planned) |
Panpan Dong |
| Abstract Scope |
Lithium–selenium disulfide (Li–SeS2) batteries have the potential to meet future energy-storage requirements via the combination of selenium with its high electrical conductivity and sulfur with its high theoretical capacity. However, shuttle effects of soluble redox intermediates (i.e., polysulfides and polyselenides) and lithium dendrite growth in conventional liquid electrolytes result in poor cycle life and safety risks of Li–SeS2 batteries, which need to be overcome for practical deployments. Solid-state electrolytes (SSEs) with high ionic conductivity and good interfacial compatibility with electrodes have been considered as an effective approach to fundamentally address the above-mentioned challenges facing Li–SeS2 batteries. Herein, we demonstrate the design of nanostructured SeS2-based composites as high-capacity cathodes and the study of novel SSEs for Li–SeS2 batteries with enhanced safety. Furthermore, the electrode/electrolyte interfacial chemistry is investigated via ex-situ analysis methods to better understand the working mechanism of all-solid-state Li–SeS2 batteries. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |