Superwettable Electrolyte Engineering for Fast Charging Li-Ion Batteries

Li Chao1,2,3; Zhenye Liang2; Lina Wang4; Daofan Cao3; Yun-Chao Yin2; Daxian Zuo2; Jian Chang5; Jun Wang5; Ke Liu3,5; Xing Li6; Guangfu Luo4; Yonghong Deng4,5; Jiayu Wan2

2024-04-20

10.1021/acsenergylett.3c02572

ACS Energy Letters   影响因子和分区

2380-8195

Despite ubiquitous application, lithium-ion batteries (LIBs) still face significant challenges in terms of fast charging over extended cycles. This is primarily due to the incomplete coverage and unsatisfactory performance of the solid electrolyte interphase (SEI) layer. However, conventional electrolyte engineering methods can be hindered by increased viscosity, low wettability, and high cost in growing an ideal SEI. Herein, we propose a general strategy that tackles this challenge using superwettable electrolytes with ultralow concentration, which enables uniform and complete coverage of the SEI on a graphite anode. Intriguingly, this electrolyte can cause high overpotentials during the low-current formation process, leading to an SEI layer rich in inorganic components. As a result, LIBs with superwettable electrolytes exhibit remarkable cycle stability and high-rate performance of 5 C at a capacity of 166 mAh g(-1), which is also verified in pouch cells. Our research introduces a simple and effective strategy to achieve an optimized SEI layer for LIBs, which can be readily extended to other battery systems.

SCI

英语

通讯

Science and Technology Foundation of Shenzhen City[52272215] ; National Natural Science Foundation of China[JCYJ20220818100218040]

Chemistry ; Electrochemistry ; Energy & Fuels ; Science & Technology - Other Topics ; Materials Science

Chemistry, Physical ; Electrochemistry ; Energy & Fuels ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:001176392600001

AMER CHEMICAL SOC

人工提交

1.School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, People's Republic of China.
2.Future Battery Research Center, Global Institute of Future Technology, Shanghai Jiao Tong University, Shanghai 200240, China
3.Department of Chemistry, College of Science, Southern University of Science and Technology, Shenzhen
4.Department of Materials Science and Engineering, School of Innovation and Entrepreneurship, Southern University of Science and Technology, Shenzhen 518055, People’s Republic of China
5.School of Innovation and Entrepreneurship, Southern University of Science and Technology, Shenzhen 518055, China
6.Contemporary Amperex Technology Ltd. (CATL), Ningde 352100, China

Li Chao,Zhenye Liang,Lina Wang,et al. Superwettable Electrolyte Engineering for Fast Charging Li-Ion Batteries[J]. ACS Energy Letters,2024,9(3).

Li Chao.,Zhenye Liang.,Lina Wang.,Daofan Cao.,Yun-Chao Yin.,...&Jiayu Wan.(2024).Superwettable Electrolyte Engineering for Fast Charging Li-Ion Batteries.ACS Energy Letters,9(3).

Li Chao,et al."Superwettable Electrolyte Engineering for Fast Charging Li-Ion Batteries".ACS Energy Letters 9.3(2024).