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Title: Electrostatic Self-Assembly Enabling Integrated Bulk and Interfacial Sodium Storage in 3D Titania-Graphene Hybrid

Journal Article · · Nano Letters
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  1. Argonne National Lab. (ANL), Argonne, IL (United States). Chemical Sciences and Engineering Division
  2. Univ. of Duisburg-Essen, Duisburg (Germany). Center for Nanointegration Duisburg-Essen (CENIDE)
  3. Xiamen Univ., Xiamen (China). Collaborative Innovation Center of Chemistry for Energy Materials, State Key Lab. Physical Chemistry of Solid Surfaces, Dept. of Chemistry
  4. 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
  5. Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division
  6. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS), X-ray Science Division
  7. Argonne National Lab. (ANL), Argonne, IL (United States). Nanoscience and Technology Division
  8. 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:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V); National Natural Science Foundation of China (NSFC)
Grant/Contract Number:
AC02-06CH11357; 21321062
OSTI ID:
1421965
Journal Information:
Nano Letters, Vol. 18, Issue 1; ISSN 1530-6984
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 36 works
Citation information provided by
Web of Science

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Enhanced sodium storage via the hetero-interface effect in BiOCl/TiO 2 p–n junctions journal January 2019
Multiscale Graphene-Based Materials for Applications in Sodium Ion Batteries journal January 2019
Atomic cobalt as an efficient electrocatalyst in sulfur cathodes for superior room-temperature sodium-sulfur batteries journal October 2018
A new strategy for the construction of 3D TiO 2 nanowires/reduced graphene oxide for high-performance lithium/sodium batteries journal January 2018
A high-tap-density nanosphere-assembled microcluster to simultaneously enable high gravimetric, areal and volumetric capacities: a case study of TiO 2 anode journal January 2018
Boosting the rate capability of multichannel porous TiO2 nanofibers with well-dispersed Cu nanodots and Cu2+-doping derived oxygen vacancies for sodium-ion batteries journal December 2018
Anchoring ultrafine Pt nanoparticles on the 3D hierarchical self-assembly of graphene/functionalized carbon black as a highly efficient oxygen reduction catalyst for PEMFCs journal January 2018
High pseudocapacitance boosts the performance of monolithic porous carbon cloth/closely packed TiO 2 nanodots as an anode of an all-flexible sodium-ion battery journal January 2019