Ultra-High Capacity of Li1.6-Xmn0.4tixo2 as a Cathode Material

13 Pages Posted: 2 Jun 2022

See all articles by Zehua Chen

Zehua Chen

Henan Polytechnic University

Shuo Wang

affiliation not provided to SSRN

Yuhan Liang

Tsinghua University

Chengzhou Xin

Tsinghua University

Shifeng Jin

Chinese Academy of Sciences (CAS)

Chuanxiang Zhang

Henan Polytechnic University

Qiufen Wang

Henan Polytechnic University

Yunzhong Dai

affiliation not provided to SSRN

Abstract

Cation-Disordered Li-Excess cathode material with an initial capacity over 300 mAh/g have drawn great attention as cathode materials for lithium batteries. In this work, Li 1.3 Mn 0.4 Ti 0.3 O 2 cathode material with superior capacity was synthesized through the effective content adjustment of Li and Ti by ball milling combined with a high-temperature solid-state method. The synthesized Li 1.3 Mn 0.4 Ti 0.3 O 2 possessed high crystallinity with a uniform particle size. The initial capacity reached 334.9, 230.5 and 127.3 mAh/g at current densities of 10, 50, and 100 mA/g, respectively. The oxidation-reduction of Mn 3+ /Mn 4+ , Mn 2+ /Mn 3+ and O 2- /O - , contributed to the ultrahigh capacity of Li 1.3 Mn 0.4 Ti 0.3 O 2 was investigated by electrochemical characterization. The density of states in Li 1.3 Mn 0.4 Ti 0.3 O 2 was studied by density functional theory based calculations. The experimental results show that Li 1.3 Mn 0.4 Ti 0.3 O 2 could be promising cathode material for high-energy-density lithium batteries.

Keywords: Lithium-ion Batteries, Cathode Materials, Lithium-rich manganates

Suggested Citation

Chen, Zehua and Wang, Shuo and Liang, Yuhan and Xin, Chengzhou and Jin, Shifeng and Zhang, Chuanxiang and Wang, Qiufen and Dai, Yunzhong, Ultra-High Capacity of Li1.6-Xmn0.4tixo2 as a Cathode Material. Available at SSRN: https://ssrn.com/abstract=4126096 or http://dx.doi.org/10.2139/ssrn.4126096

Zehua Chen (Contact Author)

Henan Polytechnic University ( email )

China

Shuo Wang

affiliation not provided to SSRN ( email )

No Address Available

Yuhan Liang

Tsinghua University ( email )

Beijing, 100084
China

Chengzhou Xin

Tsinghua University ( email )

Beijing, 100084
China

Shifeng Jin

Chinese Academy of Sciences (CAS) ( email )

Chinese Academy of Sciences
Beijing, 100190
China

Chuanxiang Zhang

Henan Polytechnic University ( email )

China

Qiufen Wang

Henan Polytechnic University ( email )

China

Yunzhong Dai

affiliation not provided to SSRN ( email )

No Address Available

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