Ligand-channel-enabled ultrafast Li-ion conduction

Di Lu, Ruhong Li, Muhammad Mominur Rahman, Pengyun Yu, Ling Lv, Sheng Yang, Yiqiang Huang, Chuangchao Sun, Shuoqing Zhang, Haikuo Zhang, Junbo Zhang, Xuezhang Xiao, Tao Deng, Liwu Fan, Lixin Chen, Jianping Wang, Enyuan Hu (), Chunsheng Wang () and Xiulin Fan ()
Additional contact information
Di Lu: Zhejiang University
Ruhong Li: Zhejiang University
Muhammad Mominur Rahman: Brookhaven National Laboratory
Pengyun Yu: Chinese Academy of Sciences
Ling Lv: Zhejiang University
Sheng Yang: Zhejiang University
Yiqiang Huang: Zhejiang University
Chuangchao Sun: Zhejiang University
Shuoqing Zhang: Zhejiang University
Haikuo Zhang: Zhejiang University
Junbo Zhang: Zhejiang University
Xuezhang Xiao: Zhejiang University
Tao Deng: University of Maryland
Liwu Fan: Zhejiang University
Lixin Chen: Zhejiang University
Jianping Wang: Chinese Academy of Sciences
Enyuan Hu: Brookhaven National Laboratory
Chunsheng Wang: University of Maryland
Xiulin Fan: Zhejiang University

Nature, 2024, vol. 627, issue 8002, 101-107

Abstract: Abstract Li-ion batteries (LIBs) for electric vehicles and aviation demand high energy density, fast charging and a wide operating temperature range, which are virtually impossible because they require electrolytes to simultaneously have high ionic conductivity, low solvation energy and low melting point and form an anion-derived inorganic interphase1–5. Here we report guidelines for designing such electrolytes by using small-sized solvents with low solvation energy. The tiny solvent in the secondary solvation sheath pulls out the Li+ in the primary solvation sheath to form a fast ion-conduction ligand channel to enhance Li+ transport, while the small-sized solvent with low solvation energy also allows the anion to enter the first Li+ solvation shell to form an inorganic-rich interphase. The electrolyte-design concept is demonstrated by using fluoroacetonitrile (FAN) solvent. The electrolyte of 1.3 M lithium bis(fluorosulfonyl)imide (LiFSI) in FAN exhibits ultrahigh ionic conductivity of 40.3 mS cm−1 at 25 °C and 11.9 mS cm−1 even at −70 °C, thus enabling 4.5-V graphite||LiNi0.8Mn0.1Co0.1O2 pouch cells (1.2 Ah, 2.85 mAh cm−2) to achieve high reversibility (0.62 Ah) when the cells are charged and discharged even at −65 °C. The electrolyte with small-sized solvents enables LIBs to simultaneously achieve high energy density, fast charging and a wide operating temperature range, which is unattainable for the current electrolyte design but is highly desired for extreme LIBs. This mechanism is generalizable and can be expanded to other metal-ion battery electrolytes.

Date: 2024
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41586-024-07045-4 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:nature:v:627:y:2024:i:8002:d:10.1038_s41586-024-07045-4

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

DOI: 10.1038/s41586-024-07045-4

Access Statistics for this article

Nature is currently edited by Magdalena Skipper

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