Synthesis of high-voltage cathode material using the Taylor-Couette flow-based co-precipitation method

Junghwan Lee; Young-Woong Song; HyoChan Lee; Min-Young Kim; Jinsub Lim

doi:10.3389/fchem.2023.1195170

Synthesis of high-voltage cathode material using the Taylor-Couette flow-based co-precipitation method

Front Chem. 2023 Apr 24:11:1195170. doi: 10.3389/fchem.2023.1195170. eCollection 2023.

Authors

Junghwan Lee^{1

2}, Young-Woong Song^{1

2}, HyoChan Lee^{1

2}, Min-Young Kim¹, Jinsub Lim¹

Affiliations

¹ Korea Institute of Industrial Technology (KITECH), Gwangju, Republic of Korea.
² Department of Materials Science and Engineering, Chonnam National University, Gwangju, Republic of Korea.

Abstract

LiNi_0.5Mn_1.5O₄ (LNMO), a next-generation high-voltage battery material, is promising for high-energy-density and power-density lithium-ion secondary batteries. However, rapid capacity degradation occurs due to problems such as the elution of transition metals and the generation of structural distortion during cycling. Herein, a new LNMO material was synthesized using the Taylor-Couette flow-based co-precipitation method. The synthesized LNMO material consisted of secondary particles composed of primary particles with an octahedral structure and a high specific surface area. In addition, the LNMO cathode material showed less structural distortion and cation mixing as well as a high cyclability and rate performance compared with commercially available materials.

Keywords: LIB; LNMO cathode material; co-precipitation; spinel structure; taylor flow.

Grants and funding

This work was supported by the Agency For Defense Development by the Korean Government (UD2200061D). This work was also supported by the Technology Development Program of the National Research Foundation (NRF). This work was funded by the Ministry of Science, ICT, and Future Planning (NRF-2020M3H4A3081885).