Revealing Structural Insights of Solid Electrolyte Interphase in High-Concentrated Non-Flammable Electrolyte for Li Metal Batteries by Cryo-TEM

Zhang, Qing1,2; Zhou, Chuan1; Li, Menghao1; Zhu, Yuanmin1,3; Wei, Xianbin1; Shen, Shaocheng4; Ji, Zongwei1; Luo, Guangfu1,5; Cheng, Yifeng1; Yang, Xuming1; Wang, Zhijie6; Zou, Lingfeng2; Zeng, Lin2; Lin, Junhao1; Li, Lei1; Francisco, Joseph S.7,8; Gu, Meng1

2023-03-01

10.1002/smll.202300849

SMALL   Impact Factor & Quartile

1613-6810

1613-6829

High-concentrated non-flammable electrolytes (HCNFE) in lithium metal batteries prevent thermal runaway accidents, but the microstructure of their solid electrolyte interphase (SEI) remains largely unexplored, due to the lack of direct imaging tools. Herein, cryo-HRTEM is applied to directly visualize the native state of SEI at the atomic scale. In HCNFE, SEI has a uniform laminated crystalline-amorphous structure that can prevent further reaction between the electrolyte and lithium. The inorganic SEI component, Li2S2O7, is precisely identified by cryo-HRTEM. Density functional theory (DFT) calculations demonstrate that the final Li2S2O7 phase has suitable natural transmission channels for Li-ion diffusion and excellent ionic conductivity of 1.2 x 10(-5) S cm(-1).

Cryo-TEM high concentration non-flammable electrolytes Li metal batteries solid electrolyte interphase (SEI) configuration

SCI

English

First ; Corresponding

National Natural Science Foundation of China["52273225","12004156","JCYJ20200109141216566","JCYJ20190809181601639"] ; Shenzhen Science and Technology Program[KQTD20190929173815000] ; Guangdong Innovative and Entrepreneurial Research Team Program[2019ZT08C044] ; Guangdong Provincial Key Laboratory of Computational Science and Material Design[2019B030301001] ; Introduced Innovative R&D Team of Guangdong[2017ZT07C062]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000958877200001

WILEY-V C H VERLAG GMBH

Web of Science

1.Southern Univ Sci & Technol SUSTech, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
2.Southern Univ Sci & Technol SUSTech, Dept Mech & Energy Engn, Shenzhen 518055, Peoples R China
3.Dongguan Univ Technol, Sch Mat Sci & Engn, Dongguan 523808, Peoples R China
4.Mississippi State Univ, Dept Chem, 75 BS Hood Rd, Mississippi State, MS 39762 USA
5.Southern Univ Sci & Technol, Guangdong Prov Key Lab Computat Sci & Mat Design, Shenzhen 518055, Peoples R China
6.Hong Kong Polytech Univ, Dept Appl Phys, Hung Hom, Kowloon, Hong Kong 999077, Peoples R China
7.Univ Penn, Dept Earth & Environm, Sci, Philadelphia, PA 19104 USA
8.Univ Penn, Dept Chem, Philadelphia, PA 19104 USA

Zhang, Qing,Zhou, Chuan,Li, Menghao,et al. Revealing Structural Insights of Solid Electrolyte Interphase in High-Concentrated Non-Flammable Electrolyte for Li Metal Batteries by Cryo-TEM[J]. SMALL,2023.

Zhang, Qing.,Zhou, Chuan.,Li, Menghao.,Zhu, Yuanmin.,Wei, Xianbin.,...&Gu, Meng.(2023).Revealing Structural Insights of Solid Electrolyte Interphase in High-Concentrated Non-Flammable Electrolyte for Li Metal Batteries by Cryo-TEM.SMALL.

Zhang, Qing,et al."Revealing Structural Insights of Solid Electrolyte Interphase in High-Concentrated Non-Flammable Electrolyte for Li Metal Batteries by Cryo-TEM".SMALL (2023).