Coaxial Carbon Nanotube Supported TiO2@MoO2@Carbon Core–Shell Anode for Ultrafast and High-Capacity Sodium Ion Storage
Document Type
Article
Publication Date
1-22-2019
Abstract
The sluggish kinetic in electrode materials is one of the critical challenges in achieving high-power sodium ion storage. We report a coaxial core−shell nanostructure composed of carbon nanotube (CNT) as the core and TiO2@MoO2@C as shells for a hierarchically nanoarchitectured anode for improved electrode kinetics. The 1D tubular nanostructure can effectively reduce ion diffusion path, increase electrical conductivity, accommodate the stress due to volume change upon cycling, and provide additional interfacial active sites for enhanced charge storage and transport properties. Significantly, a synergistic effect between TiO2 and MoO2 nanostructures is investigated through ex situ solid-state nuclear magnetic resonance. The electrode exhibits a good rate capability (150 mAh g−1 at 20 A g−1 ) and superior cycling stability with a reversibly capacity of 175 mAh g−1 at 10 A g−1 for over 8000 cycles.
Publication Information
Ma, Chunrong; Deng, Changjian; and Xiong, Hui. (2019). "Coaxial Carbon Nanotube Supported TiO2@MoO2@Carbon Core–Shell Anode for Ultrafast and High-Capacity Sodium Ion Storage". ACS Nano, 13(1), 671-680. https://doi.org/10.1021/acsnano.8b07811
Comments
For a complete list of authors, please see article.
Erratum in: ACS Nano, 2019 Feb 26, 13(2), 2664. Affiliation for author Zi-Feng Ma was incorrectedly affiliated with Argonne National Laboratory in the original publication. The correct symbols and affiliations have been corrected. doi: 10.1021/acsnano.9b00496