Near-surface reconstruction in Ni-rich layered cathodes for high-performance lithium-ion batteries

Hoon-Hee Ryu, Hyung-Woo Lim, Sin Gyu Lee and Yang-Kook Sun ()
Additional contact information
Hoon-Hee Ryu: Hanyang University
Hyung-Woo Lim: Hanyang University
Sin Gyu Lee: Hanyang University
Yang-Kook Sun: Hanyang University

Nature Energy, 2024, vol. 9, issue 1, 47-56

Abstract: Abstract The instability of the Ni-rich layered cathode materials in lithium-ion batteries is attributed to their labile surface reactivity. This reactivity induces the formation of residual lithium impurities on the cathode surface and severe side reactions with the electrolyte. Here we propose a washing process using Co-dissolved water for simultaneously removing residual lithium and forming a protective coating on Ni-rich layered cathodes. The washing induces the reconstruction of the near-surface structure through reactions with the residual lithium compounds, thereby preventing direct contact between the electrolyte and the Ni-rich surface. An additional fluorine coating on the washed cathode impedes the decomposition of salts, preventing the by-products from triggering autocatalytic side reactions at the electrolyte–cathode interface and thereby suppressing gas generation during cycling. The combination of these near-surface reconstructions synergistically extends the cycle lives of Ni-rich cathodes and satisfies the requirements concerning energy density, durability and safety for next-generation batteries in practical applications.

Date: 2024
References: Add references at CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.nature.com/articles/s41560-023-01403-8 Abstract (text/html)
Access to the full text of the articles in this series is restricted.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natene:v:9:y:2024:i:1:d:10.1038_s41560-023-01403-8

Ordering information: This journal article can be ordered from
https://www.nature.com/nenergy/

DOI: 10.1038/s41560-023-01403-8

Access Statistics for this article

Nature Energy is currently edited by Fouad Khan

More articles in Nature Energy from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().