Robust Artificial Interlayer with High Ionic Conductivity and Mechanical Strength toward Long-Life Na-Metal Batteries

Xia，Xianming1; Chen，Kaizhi1; Xu，Shitan1; Yao，Yu2; Liu，Lin1; Xu，Chen3; Rui，Xianhong1; Yu，Yan2

2023-07-01

10.1002/smsc.202300038

Small Science   Impact Factor & Quartile

2688-4046

2688-4046

Sodium metal, benefiting from its high theoretical capacity and natural abundance, is regarded as a promising anode for sodium-metal batteries (SMBs). Unfortunately, the uncontrollable sodium dendrites formation caused from the sluggish ion-transport kinetics and fragile solid electrolyte interphase (SEI) interlayer induces a low Coulombic efficiency and poor cycling stability. Constructing an artificial SEI interlayer with high ionic conductivity, stability, and mechanical toughness is an effective strategy for Na-metal anode, yet it still presents major challenge for high current density and long cycling life. Herein, an artificial SEI interlayer composed of Na–Sn alloy, Sn, and NaTe (denoted as NST) is designed via in-situ conversion/alloying reaction of tin telluride (SnTe) with Na. Such artificial interlayer possesses rapid Na-transport kinetics and high Young's modulus (5.3 GPa), benefitting to even Na plating/stripping and suppressing Na dendrite growth. Owing to these merits, the symmetrical Na/NST cell presents an ultralong cycle life span over 1390 h with a small voltage hysteresis at 1 mA cm with 1 mAh cm. And the NaV(PO) (NVP)||Na/NST full cell exhibits a prolonged life of 1000 cycles with a high-capacity retention of 88% at 5C. Herein, a promising strategy is provided to construct a high-performance artificial interlayer for SMBs.

artificial interlayer high mechanical toughness interface engineering long cycling life sodium-metal anodes

ESCI

English

Others

National Natural Science Foundation of China[51902062];National Natural Science Foundation of China[51925207];National Natural Science Foundation of China[51972067];National Natural Science Foundation of China[52002083];National Natural Science Foundation of China[52161145101];National Natural Science Foundation of China[52222210];National Synchrotron Radiation Laboratory[KY2060000173];National Natural Science Foundation of China[U1910210];Fundamental Research Funds for the Central Universities[WK2060140026];

Science & Technology - Other Topics ; Materials Science

Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:001002980600001

WILEY

2-s2.0-85166402942

Scopus

1.Guangdong Provincial Key Laboratory on Functional Soft Condensed Matter,School of Materials and Energy,Guangdong University of Technology,Guangzhou,510006,China
2.Hefei National Research Center for Physical Sciences at the Microscale,Department of Materials Science and Engineering,CAS Key Laboratory of Materials for Energy Conversion,University of Science and Technology of China,Hefei,Anhui,230026,China
3.Academy for Advanced Interdisciplinary Studies,Southern University of Science and Technology,Shenzhen,518055,China

Xia，Xianming,Chen，Kaizhi,Xu，Shitan,et al. Robust Artificial Interlayer with High Ionic Conductivity and Mechanical Strength toward Long-Life Na-Metal Batteries[J]. Small Science,2023,3(7).

Xia，Xianming.,Chen，Kaizhi.,Xu，Shitan.,Yao，Yu.,Liu，Lin.,...&Yu，Yan.(2023).Robust Artificial Interlayer with High Ionic Conductivity and Mechanical Strength toward Long-Life Na-Metal Batteries.Small Science,3(7).

Xia，Xianming,et al."Robust Artificial Interlayer with High Ionic Conductivity and Mechanical Strength toward Long-Life Na-Metal Batteries".Small Science 3.7(2023).