Pang, Boyi;
Li, Huanxin;
Guo, Yiming;
Li, Bochen;
Li, Feiran;
Parks, Huw CW;
Bird, Liam R;
... Robinson, James B; + view all
(2025)
A quasi-solid-state high-rate lithium sulfur positive electrode incorporating Li10 GeP2 S12.
Communications Materials
, 6
, Article 175. 10.1038/s43246-025-00901-4.
Preview |
Text
Robinson_s43246-025-00901-4.pdf Download (3MB) | Preview |
Abstract
Lithium–sulfur batteries offer high theoretical energy density for advanced energy storage, but practical deployment is hindered by the polysulfide shuttle effect and sluggish kinetics in conventional catholytes. Here, we develop a high-rate sulfur cathode by integrating Li₁₀GeP₂S₁₂, a highly ion-conductive solid-state electrolyte, directly into the positive electrode. We systematically investigate the influence of solvent systems and binders on electrochemical performance, while optimising the slurry casting process. Electrochemical tests demonstrate that the addition of Li₁₀GeP₂S₁₂ improved lithium-ion transport, reduced internal resistance, and enhanced reaction kinetics, leading to a high initial capacity of over 1400 mAh g-1. We observe high-capacity retention at high current densities (1 C) with the positive electrode exhibiting a stable capacity of 800 mAh g-1, significantly outperforming control samples fabricated without Li₁₀GeP₂S₁₂. This study confirms that the integration of Li₁₀GeP₂S₁₂ into the positive electrode enhances the performance of quasi-solid-state lithium–sulfur batteries, offering potential for future improvements based on the optimisation of lithium-ion conducting pathways in the positive electrode.
| Type: | Article |
|---|---|
| Title: | A quasi-solid-state high-rate lithium sulfur positive electrode incorporating Li10 GeP2 S12 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1038/s43246-025-00901-4 |
| Publisher version: | https://doi.org/10.1038/s43246-025-00901-4 |
| Language: | English |
| Additional information: | This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10212020 |
Archive Staff Only
 |
View Item |
