Boosting fast energy storage by synergistic engineering of carbon and deficiency
[6];
[5];
- State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, and School of Materials Science & Engineering, Zhejiang University, Hangzhou, PR China; DOE/OSTI
- Department of Physics, City University of Hong Kong, Hong Kong, PR China
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, PR China
- Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, PR China
- State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, and School of Materials Science & Engineering, Zhejiang University, Hangzhou, PR China
- Institute of Physics, Chinese Academy of Sciences, Beijing, PR China
- Department of Physics, City University of Hong Kong, Hong Kong, PR China; Shenzhen Research Institute, City University of Hong Kong, Shenzhen, PR China
- Department of Materials Chemistry, Huzhou University, Huzhou, 313000, PR China
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou, Zhejiang, PR China
Exploring advanced battery materials with fast charging/discharging capability is of great significance to the development of modern electric transportation. Herein we report a powerful synergistic engineering of carbon and deficiency to construct high-quality three/two-dimensional cross-linked Ti2Nb10O29-x@C composites at primary grain level with conformal and thickness-adjustable boundary carbon. Such exquisite boundary architecture is demonstrated to be capable of regulating the mechanical stress and concentration of oxygen deficiency for desired performance. Consequently, significantly improved electronic conductivity and enlarged lithium ion diffusion path, shortened activation process and better structural stability are realized in the designed Ti2Nb10O29-x@C composites. The optimized Ti2Nb10O29-x@C composite electrode shows fast charging/discharging capability with a high capacity of 197 mA h g-1
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- City University of Hong Kong; Fundamental Investigation of Phase Transformative Materials for Energy Application; Fundamental Research Funds for the Central Universities; Key Research and Development Program of Hainan Province; National Natural Science Foundation of China; National Youth Talent Support Program of China; Natural Science Funds for Distinguished Young Scholar of Zhejiang Province; Qianjiang Talents Plan D; Shenzhen Science and Technology Innovation Committee; Startup Foundation for Hundred-Talent Program of Zhejiang University; USDOE Office of Science (SC)
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1624235
- Journal Information:
- Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 11; ISSN 2041-1723
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
X-ray microanalysis and high-resolution transmission electron microscopy of the reduced titanium-niobium oxides
High grain boundary density Li{sub 4}Ti{sub 5}O{sub 12}/anatase-TiO{sub 2} nanocomposites as anode material for Li-ion batteries