A1 Journal article (refereed)
Correlation of aluminum doping and lithiation temperature with electrochemical performance of LiNi1-xAlxO2 cathode material (2023)

Välikangas, J., Laine, P., Hietaniemi, M., Hu, T., Selent, M., Tynjälä, P., & Lassi, U. (2023). Correlation of aluminum doping and lithiation temperature with electrochemical performance of LiNi1-xAlxO2 cathode material. Journal of Solid State Electrochemistry, 27(3), 641-654. https://doi.org/10.1007/s10008-022-05356-y

JYU authors or editors

Publication details

All authors or editors: Välikangas, Juho; Laine, Petteri; Hietaniemi, Marianna; Hu, Tao; Selent, Marcin; Tynjälä, Pekka; Lassi, Ulla

Journal or series: Journal of Solid State Electrochemistry

ISSN: 1432-8488

eISSN: 1433-0768

Publication year: 2023

Publication date: 23/12/2022

Volume: 27

Issue number: 3

Pages range: 641-654

Publisher: Springer

Publication country: Germany

Publication language: English

DOI: https://doi.org/10.1007/s10008-022-05356-y

Publication open access: Openly available

Publication channel open access: Partially open access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/84785

Abstract

This article presents a process for producing LiNi1-xAlxO2 (0 <  ×  < 0.05) cathode material with high capacity and enhanced cycle properties of 145 mAh/g after 600 cycles. The LiNi1-xAlxO2 (0 <  ×  < 0.05) cathode material is prepared by mixing coprecipitated Ni(OH)2 with LiOH and Al(OH)3, followed by lithiation at temperature range of 650–710 °C, after which any residual lithium from lithiation is washed from the particle surfaces. Electrochemical performance was studied within full-cell and half-cell application; in addition, different material characterization methods were carried out to explain structure changes when certain amount of aluminum is introduced in the LiNi1-xAlxO2 structure. Surface analyses were carried out to demonstrate how washing process changes the chemical environment of the LiNi1-xAlxO2 secondary particle surface. The results demonstrate how Al doping, lithiation temperature, and the washing process affect the performance of the LiNi1-xAlxO2 cathode material.

Keywords: lithium-ion batteries; aluminium

Free keywords: lithium-ion battery; LNO; cathode; lithium-nickel oxide; aluminum

Contributing organizations

Ministry reporting: Yes

Reporting Year: 2023

Preliminary JUFO rating: 1