Buffering internal thermal surges: the role of precursor specific heat capacity in the microstructural integrity of LiNiO2 cathodes

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요약

J. Mater. Chem. A, 2026, Advance ArticleDOI: 10.1039/D6TA01919F, CommunicationWoowon Chung, Young Geol Yu, JinHa Shim, Jin Ho BangHigh precursor specific heat capacity buffers thermal surges, promoting uniform LiNiO2 grains. This intrinsic property yields rob…

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Buffering internal thermal surges: the role of precursor specific heat capacity in the microstructural integrity of LiNiO2 cathodes

* Corresponding authors

a Department of Bionano Technology, Center for Bionano Intelligence Education and Research, Hanyang University ERICA, 55 Hanyangdaehak-ro, Sangnok-gu, Ansan, Gyeonggi-do 15588, Republic of Korea

b Department of Applied Chemistry, Center for Bionano Intelligence Education and Research, Hanyang University ERICA, 55 Hanyangdaehak-ro, Sangnok-gu, Ansan, Gyeonggi-do 15588, Republic of Korea
E-mail: [email protected]

c Department of Energy and Bio Sciences, Hanyang University ERICA, 55 Hanyangdaehak-ro, Sangnok-gu, Ansan, Gyeonggi-do 15588, Republic of Korea

Abstract

This study identifies precursor-specific heat capacity (Cp) as a critical thermophysical descriptor for LiNiO2 cathodes. Higher-Cp precursors buffer internal thermal surges during calcination, promoting uniform grain growth and suppressing cation mixing. This moderated thermal evolution significantly enhances the chemomechanical durability and long-term cycling performance of high-Ni cathodes.

• This article is part of the themed collection: Journal of Materials Chemistry A HOT Papers