Atomically bonding Na anodes with metallized ceramic electrolytes by ultrasound welding for high-energy/power solid-state sodium metal batteries  

作　　者：Dongchen Li Xinxin Wang Qi Guo Xiaole Yu Shangxu Cen Huirong Ma Jingjing Chen Dajian Wang Zhiyong Mao Chenlong Dong 

机构地区：[1]Tianjin Key Laboratory for Photoelectric Materials and Devices,School of Materials Science and Engineering,Tianjin University of Technology,Tianjin,People's Republic of China [2]Key Laboratory of Display Materials and Photoelectric Devices,Tianjin University of Technology,Ministry of Education,Tianjin,People's Republic of China

出　　处：《Carbon Energy》2023年第2期184-192,共9页碳能源（英文）

基　　金：Scientific Developing Foundation of Tianjin Education Commission,Grant/Award Number:2018ZD09;National Natural Science Foundation of China,Grant/Award Numbers:51777138,52202282。

摘　　要：A solid-state sodium metal battery has cut a striking figure in next-generation large-scale energy storage technology on account of high safety,high energy density,and low cost.Nevertheless,the large interfacial resistance and sodium dendrite growth originating from the poor interface contact seriously hinder its practical application.Herein,a modified ultrasound welding was proposed to atomically bond Na anodes and Au-metalized Na_(3)Zr_(2)Si_(2)PO_(12) electrolytes associated with the in situ formation of Na–Au alloy interlayers.Thereupon,intimate Na_(3)Zr_(2)Si_(2)PO_(12)-Au/Na interfaces with a low interfacial resistance(~23Ωcm^(2))and a strong dendrite inhibition ability were constructed.The optimized Na symmetric battery can cycle steadily for more than 900 h at 0.3 mA cm^(-2) under a low overpotential(<50 mV)of Na electroplating/stripping and deliver a high critical current density of 0.8 mAcm^(-2) at room temperature.By incorporating the above interface into the solid-state Na metal battery,taking three-dimensional Na_(3)V_(2)(PO_(4))_(3) as the cathode,the full battery offers a high energy density of 291 Wh kg^(-1) at a high power density of 1860Wkg^(-1).A pouch-type solid-state sodium metal full battery based on a ceramic electrolyte was assembled for the first time,and it lit a 3 V LED lamp.Such a strategy of the ultrasound welding metalized solid-state electrolyte/Na interface by engineering the Na-Au interlayer would pave a new pathway to engineer a low-resistance and highly stable interface for high-energy/density solid-state sodium metal batteries.

关 键 词：intimate interface contact metallized ceramics Na-Au interlayer solid-state sodium metal battery ultrasound welding 

分 类 号：TM912[电气工程—电力电子与电力传动]