A1 Journal article (refereed)
Effects of Lithium Source and Content on the Properties of Li-Rich Layered Oxide Cathode Materials (2023)

Wang, Y., Hietaniemi, M., Välikangas, J., Hu, T., Tynjälä, P., & Lassi, U. (2023). Effects of Lithium Source and Content on the Properties of Li-Rich Layered Oxide Cathode Materials. ChemEngineering, 7(1), Article 15. https://doi.org/10.3390/chemengineering7010015

JYU authors or editors

Publication details

All authors or editors: Wang, Yufan; Hietaniemi, Marianna; Välikangas, Juho; Hu, Tao; Tynjälä, Pekka; Lassi, Ulla

Journal or series: ChemEngineering

eISSN: 2305-7084

Publication year: 2023

Publication date: 14/02/2023

Volume: 7

Issue number: 1

Article number: 15

Publisher: MDPI

Publication country: Switzerland

Publication language: English

DOI: https://doi.org/10.3390/chemengineering7010015

Publication open access: Openly available

Publication channel open access: Open Access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/85689

Abstract

Lithium-rich layered oxide (LLO) are considered high-capacity cathode materials for next-generation lithium-ion batteries. In this study, LLO cathode materials were synthesized via the hydroxide coprecipitation method followed by a two-step lithiation process using different lithium contents and lithium sources. The effects of lithium content and lithium source on structure and electrochemical performance were investigated. This study demonstrated the clear impact of Li/TM ratio on electrochemical performance. Lower Li/TM ratio reduced the irreversible capacity loss in the first cycle and provided better cycling stability among all samples. The best results exhibited an initial discharge capacity of 279.65 mAh g−1 and reached a discharge capacity of 231.9 mAh g−1 (82.9% capacity retention) after 30 cycles. The sample using Li2CO3 as lithium source exhibits better electrochemical performance than the sample using LiOH as lithium source. Therefore, it is important to choose the appropriate lithium source and optimal lithium content for improving structural properties and electrochemical performance of LLO.

Keywords: lithium-ion batteries; electrodes; materials (matter); lithium; oxides; electrochemistry

Free keywords: lithium-ion battery; cathode material; lithium-rich layered oxides; coprecipitation; lithium content; lithium source

Contributing organizations

Ministry reporting: Yes

Reporting Year: 2023

JUFO rating: 1