Organic Eutectic Mixture Incorporated with Graphene Oxide Sheets as Lithiophilic Artificial Protective Layer for Dendrite-Free Lithium Metal Batteries

Xu, Lei1; Zhang, Qicheng1; Niu, Shuzhang1,2; Wang, Xin1; Lian, Qing1; Huang, Yulan1; Shi, Run1; Amini, Abbas3; Cheng, Chun1,4

2023-02-01

10.1002/aenm.202204214

Advanced Energy Materials   Impact Factor & Quartile

1614-6832

1614-6840

For wide and safe applications of Li metal batteries, the suppression of Li dendrite growth during cycling is the most crucial yet challenging topic. In this work, an artificial protective interlayer of GO-BQ@LiTFSI (GBL) is designed to overcome this issue. The GBL interlayer is prepared by incorporating graphene-oxide sheets with a liquid organic eutectic mixture of 1,4-benzoquinone and bis (trifluoromethane) sulfonamide lithium salt. With the exceptional merits of these functional materials, the incorporation endows the GBL interlayer with rich lithiophilic active sites, good ionic conductivity, superior thermal stability and compatibility with the electrolyte, and the precursor supply stations for the formation of a compact and LiF-rich solid-electrolyte interface (SEI). Consequently, the GBL effectively promotes the uniform nucleation of Li at low over-potentials and regulates the Li-ion flux, leading to the formation of planar Li metal. After utilizing the GBL interlayer in the Li||Li symmetric cells, high electrochemical stability for 600 h is achieved at a current density of 3 mA cm(-2) and a capacity of 3 mAh cm(-2). Remarkably, this modification enables Li||LiFePO4 full cells with 1600 cycles at 1C and a high-capacity retention of 95.23% with a cathode mass loading of approximate to 6 mg cm(-2).

artificial protective layers graphene-oxide sheets organic eutectic mixture uniform Li nucleation

SCI

English

First ; Corresponding

National Natural Science Foundation of China["51972161","91963129"] ; Guangdong Basic and Applied Basic Research Foundation[2019A1515011805] ; Shenzhen Science and Technology Innovation Committee[JCYJ20190809115407617] ; Basic Research Project of Science and Technology Plan of Shenzhen[JCYJ20180504165655180] ; Guangdong Provincial Key Laboratory of Energy Materials for Electric Power[2018B030322001] ; Southern University of Science and Technology (SUSTech)["2021S07","2022G01","2022G02"] ; Special Funds for the Cultivation of Guangdong College Students' Scientific and Technological Innovation["pdjh2022c0005","pdjh2023b0460"]

Chemistry ; Energy & Fuels ; Materials Science ; Physics

Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000932764300001

WILEY-V C H VERLAG GMBH

Web of Science

1.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
2.Shenzhen Technol Univ, Coll New Mat & New Energies, Shenzhen 518118, Peoples R China
3.Western Sydney Univ, Ctr Infrastruct Engn, Kingwood, NSW 2751, Australia
4.Southern Univ Sci & Technol, Guangdong Prov Key Lab Energy Mat Elect Power, Shenzhen 518055, Peoples R China

Xu, Lei,Zhang, Qicheng,Niu, Shuzhang,et al. Organic Eutectic Mixture Incorporated with Graphene Oxide Sheets as Lithiophilic Artificial Protective Layer for Dendrite-Free Lithium Metal Batteries[J]. Advanced Energy Materials,2023.

Xu, Lei.,Zhang, Qicheng.,Niu, Shuzhang.,Wang, Xin.,Lian, Qing.,...&Cheng, Chun.(2023).Organic Eutectic Mixture Incorporated with Graphene Oxide Sheets as Lithiophilic Artificial Protective Layer for Dendrite-Free Lithium Metal Batteries.Advanced Energy Materials.

Xu, Lei,et al."Organic Eutectic Mixture Incorporated with Graphene Oxide Sheets as Lithiophilic Artificial Protective Layer for Dendrite-Free Lithium Metal Batteries".Advanced Energy Materials (2023).