Spatial Confinement in Structural Biomimetic Catalysts: Enhancing Sulfur-Chain Homolysis and Enzyme-like Activity for High-Performance Lithium–Sulfur Batteries
Our study addresses the critical challenges of sluggish sulfur reaction kinetics and severe lithium polysulfide shuttling in high-energy-density lithium-sulfur batteries under high sulfur loading and lean electrolyte conditions. Inspired by the structure of cytochrome c oxidase, we designed an enzyme-mimetic Fe-TCPP@Cu-BTC catalyst with spatial confinement effects. Its spatially confined configuration induces the homolytic cleavage of Li<sub>2</sub>S<sub>6</sub> to LiS<sub>3</sub> and accelerates their subsequent conversion to Li<sub>2</sub>S. The enzyme-like properties were further evaluated using Michaelis-Menten kinetics, confirming that the homolytic reaction can increase the sulfur conversion rate by nearly 2 orders of magnitude.
Authors
- Hao-Ran Tu (ORCID: https://orcid.org/0000-0002-2050-3567)
- Dong Cai (ORCID: https://orcid.org/0000-0002-8775-3480)
- Yang‐Yang Dong (ORCID: https://orcid.org/0000-0003-1727-1651)
- Zhi Yang (ORCID: https://orcid.org/0000-0002-9265-5041)
- Shuo Yang (ORCID: https://orcid.org/0000-0001-8906-5289)
- Zeyi Guo (ORCID: https://orcid.org/0000-0001-5367-7574)
- Hao Tang (ORCID: https://orcid.org/0000-0003-0323-0349)
- Xuemei Zhou (ORCID: https://orcid.org/0000-0002-6264-6603)
- Tingting Li (ORCID: https://orcid.org/0000-0001-9927-9141)
- Jia Guan (ORCID: https://orcid.org/0000-0001-5339-4187)
- Meiling Shu
Institutions
- Wenzhou University (CN)
- Dongguan University of Technology (CN)
- Primary Source (US)
- Nano Carbon (Poland) (PL)
Publication Details
- Journal
- ACS Nano
- Published
- 2025-08-15
- DOI
- https://doi.org/10.1021/acsnano.5c11892
- Citations
- 3
- Primary Topic
- Advanced Battery Materials and Technologies
- Type
- article
- Field-Weighted Citation Impact
- 2.19