Cited by 146Advancements in Battery MaterialsAdvanced Battery Materials and TechnologiesAdvanced Battery Technologies Research

Ethylene Carbonate‐Free Propylene Carbonate‐Based Electrolytes with Excellent Electrochemical Compatibility for Li‐Ion Batteries through Engineering Electrolyte Solvation Structure

Liu, Xingwei, Shen, Xiaohui, Li, Hui, Li, Peng, Luo, Laibing, Fan, Haiman, Feng, Xiangming, Chen, Weihua +3 more·2021·Advanced Energy Materials

Abstract

Propylene carbonate (PC) ‐based electrolytes have many desirable advantageous properties compared to the currently used ethylene carbonate (EC) ‐based electrolytes for lithium ion batteries, however, their poor compatibility with the graphite anode hinders its applications. Here, a facile and effective strategy to make electrochemically compatible PC‐based electrolytes by use of a weakly coordinating diethyl carbonate co‐solvent to induce PF 6 − anions into the solvation shell of Li + to form an anion‐induced ion–solvent‐coordinated (AI‐ISC) structure is reported. Such an AI‐ISC structure can lead to an increase of the lowest unoccupied molecular orbital energy level of the electrolyte, therefore considerably improving the reduction tolerance of the PC solvent. Furthermore, by using the film‐forming additive (fluoroethylene carbonate, FEC), an electrochemically stable, EC‐free PC‐based electrolyte, which enables reversible Li + intercalation on the graphite electrode is obtained. The graphite/LiNi 0.5 Mn 0.3 Co 0.2 O 2 pouch cells using this PC‐based electrolyte exhibit very similar room‐temperature electrochemical performance to those using conventional EC‐based electrolytes and excellent low‐temperature performance. This work provides a new approach to make EC‐free electrolytes with a similar AI‐ISC structure but without the need for a high concentration of Li salt of highly concentrated electrolytes, which may bring new insights in the development of advanced electrolyte systems for wide battery applications.

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Crossref · 10.1002/aenm.202003905

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  • Coupling with fluoroethylene carbonate, a propylene carbonate-based electrolyte enables reversible Li intercalation/extraction to/from the graphite anode without destroying its structure, and a graphite/NMC532 full cell exhibited excellent wide-temperature performance.

    “Coupling with film-forming additive FEC, the PC-based electrolyte enables reversible Li intercalation/ extraction to/from the graphite anode without destroying its structure and the graphite/NMC532 full cell also exhibited excellent wide-temperature performance.”

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Authors
Liu, X., Shen, X., Li, H., Li, P., Luo, L., Fan, H., Feng, X., Chen, W., Ai, X., Yang, H., & Cao, Y.
Affiliations
  • College of Chemistry and Molecular Sciences Hubei Key Laboratory of Electrochemical Power Sources Wuhan University Wuhan 430072 China
  • Wuhan University (CN)
  • ShenZhen SaiJiaoYang Energy and Science Technology Co., Ltd. Baolong 2nd Rd Shenzhen 518116 China
  • Zhengzhou University (CN)
Corresponding author
Cao, Yuliang
Venue
Advanced Energy Materials
Publisher
Wiley
Published
2021-03-31
Volume
11
Issue
19
ISSN
  • 1614-6832 (ISSN-L)
  • 1614-6840
OpenAlex
W3142450778
Cited by
146
References
0
Citations by year
2026: 22 · 2025: 28 · 2024: 32 · 2023: 39 · 2022: 17 · 2021: 8
FWCI
7.06
Type
journal article
Language
en
Open access
closed
Locations
Advanced Energy Materials (publishedVersion)
Topics
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Advancements in Battery Materials
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Advanced Battery Materials and Technologies
  • Physical Sciences › Engineering › Automotive Engineering › Advanced Battery Technologies Research
Keywords
lithium-ion batteries, electrolyte solvation structure, fluoroethylene carbonate additive, film-forming additives, low-temperature performance

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