Nanoarchitectonics of Acicular Nanocrystal Assembly and Nanosheet Assembly for Lithium-Ion Batteries.

Author(s) Masuda, Y.; Akimoto, J.; Kato, K.
Journal J Nanosci Nanotechnol
Date Published 2020 May 01
Abstract

Nanoarchitectonics of metal oxide nanocrystal electrodes were developed for lithium-ion batteries. The electrodes included copper nanoparticles and doped fluorine. For the acicular nanocrystals, charge-discharge reactions progressed at 1.8 V over 100 cycles at 100 and 10 A. A 15-mmdiameter battery containing acicular nanocrystals showed capacity, coulomb efficiency, and specific capacity, respectively of 20 Ah, 98%, and ~242 mAh/g at 100 A and 40 Ah, 99%, and 484 mAh/g at 10 A. The TiO₂/SnO₂ electrode consisted of a SnO₂ sheet-assembled structure with surface layers of anatase TiO₂. The TiO₂/SnO₂ battery operated at 1.3 (100 cycles) and 1.2 (50 cycles) V at 100 and 10 A, respectively; its capacity, coulomb efficiency, and specific capacity, respectively were 50 Ah, 98%, and 161 mAh/g at 100 A and 200 Ah, 97-98%, and 643 mAh/g at 10 A. The characteristic microstructure, chemical composition, and crystal faces of both materials contributed to battery performance.

DOI 10.1166/jnn.2020.17443
ISSN 1533-4899
Citation Masuda Y, Akimoto J, Kato K. Nanoarchitectonics of Acicular Nanocrystal Assembly and Nanosheet Assembly for Lithium-Ion Batteries. J Nanosci Nanotechnol. 2020;20(5):3004-3012.