In:
Angewandte Chemie, Wiley, Vol. 135, No. 8 ( 2023-02-13)
Abstract:
Electrolyte design has become ever more important to enhance the performance of lithium‐ion batteries (LIBs). However, the flammability issue and high reactivity of the conventional electrolytes remain a major problem, especially when the LIBs are operated at high voltage and extreme temperatures. Herein, we design a novel non‐flammable fluorinated ester electrolyte that enables high cycling stability in wide‐temperature variations (e.g., −50 °C–60 °C) and superior power capability (fast charge rates up to 5.0 C) for the graphite||LiNi 0.8 Co 0.1 Mn 0.1 O 2 (NCM811) battery at high voltage (i.e., 〉 4.3 V vs. Li/Li + ). Moreover, this work sheds new light on the dynamic evolution and interaction among the Li + , solvent, and anion at the molecular level. By elucidating the fundamental relationship between the Li + solvation structure and electrochemical performance, we can facilitate the development of high‐safety and high‐energy‐density batteries operating in harsh conditions.
Type of Medium:
Online Resource
ISSN:
0044-8249
,
1521-3757
DOI:
10.1002/ange.202216189
Language:
English
Publisher:
Wiley
Publication Date:
2023
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