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Bornamehr B, Arnold S, Dun C, Urban JJ, Zickler GA, Elsaesser MS, Presser V. High-Performance Lithium-Ion Batteries with High Stability Derived from Titanium-Oxide- and Sulfur-Loaded Carbon Spherogels. ACS Appl Mater Interfaces 2024; 16:5881-5895. [PMID: 38277499 PMCID: PMC10859890 DOI: 10.1021/acsami.3c16851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 12/15/2023] [Accepted: 12/28/2023] [Indexed: 01/28/2024]
Abstract
This study presents a novel approach to developing high-performance lithium-ion battery electrodes by loading titania-carbon hybrid spherogels with sulfur. The resulting hybrid materials combine high charge storage capacity, electrical conductivity, and core-shell morphology, enabling the development of next-generation battery electrodes. We obtained homogeneous carbon spheres caging crystalline titania particles and sulfur using a template-assisted sol-gel route and carefully treated the titania-loaded carbon spherogels with hydrogen sulfide. The carbon shells maintain their microporous hollow sphere morphology, allowing for efficient sulfur deposition while protecting the titania crystals. By adjusting the sulfur impregnation of the carbon sphere and varying the titania loading, we achieved excellent lithium storage properties by successfully cycling encapsulated sulfur in the sphere while benefiting from the lithiation of titania particles. Without adding a conductive component, the optimized material provided after 150 cycles at a specific current of 250 mA g-1 a specific capacity of 825 mAh g-1 with a Coulombic efficiency of 98%.
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Affiliation(s)
- Behnoosh Bornamehr
- INM
- Leibniz Institute for New Materials, Campus D2 2, 66123 Saarbrücken, Germany
- Department
of Materials Science & Engineering, Saarland University, Campus D2 2, 66123 Saarbrücken, Germany
| | - Stefanie Arnold
- INM
- Leibniz Institute for New Materials, Campus D2 2, 66123 Saarbrücken, Germany
- Department
of Materials Science & Engineering, Saarland University, Campus D2 2, 66123 Saarbrücken, Germany
| | - Chaochao Dun
- The
Molecular Foundry, Lawrence Berkeley National
Laboratory Berkeley, Berkeley, California 94720, United States
| | - Jeffrey J. Urban
- The
Molecular Foundry, Lawrence Berkeley National
Laboratory Berkeley, Berkeley, California 94720, United States
| | - Gregor A. Zickler
- Chemistry
and Physics of Materials, University of
Salzburg, 5020 Salzburg, Austria
| | - Michael S. Elsaesser
- Chemistry
and Physics of Materials, University of
Salzburg, 5020 Salzburg, Austria
| | - Volker Presser
- INM
- Leibniz Institute for New Materials, Campus D2 2, 66123 Saarbrücken, Germany
- Department
of Materials Science & Engineering, Saarland University, Campus D2 2, 66123 Saarbrücken, Germany
- Saarene
- Saarland Center for Energy Materials and Sustainability, Campus C4 2, 66123 Saarbrücken, Germany
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