Borate–pyran lean electrolyte-based Li-metal batteries with minimal Li corrosion

Hyeokjin Kwon, Hongsin Kim, Jaemin Hwang, Wonsik Oh, Youngil Roh, Dongseok Shin and Hee-Tak Kim ()
Additional contact information
Hyeokjin Kwon: KAIST
Hongsin Kim: LG Energy Solution
Jaemin Hwang: KAIST
Wonsik Oh: KAIST
Youngil Roh: KAIST
Dongseok Shin: LG Energy Solution
Hee-Tak Kim: KAIST

Nature Energy, 2024, vol. 9, issue 1, 57-69

Abstract: Abstract Engineering liquid electrolytes for lithium (Li)-metal electrodes has been used to control the morphology of deposited Li in Li-metal batteries (LMBs). However, the Li corrosion problem remains unresolved, hindering the design of lean electrolytes for practical LMBs, which require the electrolyte/capacity (E/C) ratio to be 2 g Ah−1 or lower. Here we report a borate–pyran-based electrolyte to address the chronic Li-corrosion problem. We discovered that the borate–pyran electrolyte transforms large LiF crystallites in the solid–electrolyte interphase into fine crystalline or glassy LiF, which enhances the passivity of the Li/electrolyte interface by minimizing the permeation of electrolyte molecules into the solid–electrolyte interphase. LMBs assembled with the borate–pyran electrolyte, a high-nickel layered oxide cathode (3.83 mAh cm−2) and thin lithium (20 μm) delivered a high initial full-cell-level energy density (>400 Wh kg−1) and operated for 400 cycles with 70% capacity retention at an E/C ratio of 1.92 g Ah−1, 350 cycles with 73% capacity retention at 1.24 g Ah−1 and 200 cycles with 85% retention at 0.96 g Ah−1.

Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.nature.com/articles/s41560-023-01405-6 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_s41560-023-01405-6

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

DOI: 10.1038/s41560-023-01405-6

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 ().