Non-Flammable Electrolyte Enables High-Voltage and Wide-Temperature Lithium-Ion Batteries with Fast Charging

被引：174

作者：

Zou, Yeguo ^{[1
,2
]}

Ma, Zheng ^{[1
]}

Liu, Gang ^{[1
,2
]}

Li, Qian ^{[1
]}

Yin, Dongming ^{[1
,2
]}

Shi, Xuejian ^{[1
]}

Cao, Zhen ^{[3
]}

Tian, Zhengnan ^{[3
]}

Kim, Hun ^{[4
]}

Guo, Yingjun ^{[5
]}

Sun, Chunsheng ^{[5
]}

Cavallo, Luigi ^{[3
]}

Wang, Limin ^{[1
,2
]}

Alshareef, Husam N. ^{[3
]}

Sun, Yang-Kook ^{[4
]}

Ming, Jun ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Rare Earth Resource Utilizat, Changchun 130022, Peoples R China

[2] Univ Sci & Technol China, Hefei 230026, Peoples R China

[3] King Abdullah Univ Sci & Technol, Mat Sci & Engn, Thuwal 239556900, Saudi Arabia

[4] Hanyang Univ, Dept Energy Engn, Seoul 133791, South Korea

[5] Huzhou Kunlun Enchem Power Battery Mat Co Ltd, Huzhou 313000, Peoples R China

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2023年 / 62卷 / 08期

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

Fast-Charging; Lithium-Ion Batteries; Nonflammable High-Voltage Electrolyte; Solvation Structure; Wide-Temperature; ESTER-BASED ELECTROLYTE; LI-ION; INTERFACIAL MODEL; ANTIMONY ANODE; GRAPHITE; INTERPHASES; PERFORMANCE; SOLVATION; ADDITIVES; SOLVENT;

D O I：

10.1002/anie.202216189

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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 degrees C-60 degrees C) and superior power capability (fast charge rates up to 5.0 C) for the graphite||LiNi0.8Co0.1Mn0.1O2 (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.

引用

页数：13

共 59 条

[1] Conformational analysis. Part 35. NMR, solvation and theoretical investigation of rotational isomerism in methyl fluoroacetate and methyl difluoroacetate [J].