Issue 29, 2019

Three-dimensional SWCNT and MWCNT hybrid networks for extremely high-loading and high rate cathode materials

Abstract

Extremely high-loading LiNi0.5Co0.2Mn0.3O2 (NCM523) cathode materials (up to 99.5 wt%) were achieved through self-organization of a three-dimensional network of multi-walled and single-walled CNT hybrids. The full cell using the NCM523 cathode/graphite without any conventionally used insulating binder exhibited superior C-rate capability (105 mA h gāˆ’1 at 10C) and remarkably improved cycling stability (94% capacity after 300 cycles at 1C). The hybridization of a small amount of single-walled CNTs enabled a fast lithiation/delithiation reaction with less polarization and prevented intergranular cracking in both the individual NCM523 secondary particles and NCM523 electrodes during cycling.

Graphical abstract: Three-dimensional SWCNT and MWCNT hybrid networks for extremely high-loading and high rate cathode materials

Supplementary files

Article information

Article type
Paper
Submitted
12 Apr 2019
Accepted
24 Jun 2019
First published
25 Jun 2019

J. Mater. Chem. A, 2019,7, 17412-17419

Author version available

Three-dimensional SWCNT and MWCNT hybrid networks for extremely high-loading and high rate cathode materials

D. Kim, N. Zettsu and K. Teshima, J. Mater. Chem. A, 2019, 7, 17412 DOI: 10.1039/C9TA03870A

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