Electrostatic Self-Assembly Enabling Integrated Bulk and Interfacial Sodium Storage in 3D Titania-Graphene Hybrid
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- Argonne National Lab. (ANL), Argonne, IL (United States). Chemical Sciences and Engineering Division
- Univ. of Duisburg-Essen, Duisburg (Germany). Center for Nanointegration Duisburg-Essen (CENIDE)
- Xiamen Univ., Xiamen (China). Collaborative Innovation Center of Chemistry for Energy Materials, State Key Lab. Physical Chemistry of Solid Surfaces, Dept. of Chemistry
- Argonne National Lab. (ANL), Argonne, IL (United States). Chemical Sciences and Engineering Division; Univ. of North Carolina, Chapel Hill, NC (United States). Dept. of Chemistry
- Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division
- Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS), X-ray Science Division
- Argonne National Lab. (ANL), Argonne, IL (United States). Nanoscience and Technology Division
- Microvast Power Solutions, Stafford, TX (United States)
Room temperature sodium-ion batteries have attracted increased attention for energy storage due to the natural abundance of sodium. However, it remains a huge challenge to develop versatile electrode materials with favorable properties, which requires smart structure design and good mechanistic understanding. Herein, we reported a general and scalable approach to synthesize 3D titania-graphene hybrid via electrostatic-interaction-induced self-assembly. Synchrotron X-ray probe, transmission electron microscopy and computational modeling revealed that the strong interaction between Titania and graphene through comparably strong van-der-Waals forces not only facilitates bulk Na+ intercalation but also enhances the interfacial sodium storage. As a result, the titania-graphene hybrid exhibits exceptional long-term cycle stability up to 5000 cycles, and ultrahigh rate capability up to 20 C for sodium storage. Furthermore, density function theory calculation indicated that the interfacial Li+, K+, Mg2+ and Al3+ storage can be enhanced as well. The proposed general strategy opens up new avenues to create versatile materials for advanced battery systems.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- National Natural Science Foundation of China (NNSFC); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1421965
- Journal Information:
- Nano Letters, Journal Name: Nano Letters Journal Issue: 1 Vol. 18; ISSN 1530-6984
- Publisher:
- American Chemical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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