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High-Rate Layered Cathode of Lithium-Ion Batteries through Regulating Three-Dimensional Agglomerated Structure

Authors :
Jun-Ping Hu
Hang Sheng
Qi Deng
Qiang Ma
Jun Liu
Xiong-Wei Wu
Jun-Jie Liu
Yu-Ping Wu
Source :
Energies, Vol 13, Iss 7, p 1602 (2020)
Publication Year :
2020
Publisher :
MDPI AG, 2020.

Abstract

LiNixCoyMnzO2 (LNCM)-layered materials are considered the most promising cathode for high-energy lithium ion batteries, but suffer from poor rate capability and short lifecycle. In addition, the LiNi1/3Co1/3Mn1/3O2 (NCM 111) is considered one of the most widely used LNCM cathodes because of its high energy density and good safety. Herein, a kind of NCM 111 with semi-closed structure was designed by controlling the amount of urea, which possesses high rate capability and long lifespan, exhibiting 140.9 mAh·g−1 at 0.85 A·g−1 and 114.3 mAh·g−1 at 1.70 A·g−1, respectively. The semi-closed structure is conducive to the infiltration of electrolytes and fast lithium ion-transfer inside the electrode material, thus improving the rate performance of the battery. Our work may provide an effective strategy for designing layered-cathode materials with high rate capability.

Details

Language :
English
ISSN :
13071602 and 19961073
Volume :
13
Issue :
7
Database :
Directory of Open Access Journals
Journal :
Energies
Publication Type :
Academic Journal
Accession number :
edsdoj.34fe14e615cf461098bb080c882aa19a
Document Type :
article
Full Text :
https://doi.org/10.3390/en13071602