Atomically bonding Na anodes with metallized ceramic electrolytes by ultrasound welding for high‐energy/power solid‐state sodium metal batteries. Issue 2 (22nd November 2022)

• Record Type: Journal Article
• Authors: Li, Dongchen; Wang, Xinxin; Guo, Qi; Yu, Xiaole; Cen, Shangxu; Ma, Huirong; Chen, Jingjing; Wang, Dajian; Mao, Zhiyong; Dong, Chenlong
• Is Part Of: Carbon energy. Volume 5:Issue 2(2023)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-11-22
• Subjects: intimate interface contact -- metallized ceramics -- Na–Au interlayer -- solid‐state sodium metal battery -- ultrasound welding; Carbon -- Periodicals; Carbon dioxide industry -- Periodicals; Power resources -- Research -- Periodicals; Energy industries -- Periodicals; Power resources -- Research; Energy industries; Carbon dioxide industry; Carbon; Electronic journals; Periodicals; 620.193
• DOI: 10.1002/cey2.299
• Languages: English
• ISSNs: 2637-9368

Abstract

Abstract: 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 Na3 Zr2 Si2 PO12 electrolytes associated with the in situ formation of Na–Au alloy interlayers. Thereupon, intimate Na3 Zr2 Si2 PO12 –Au/Na interfaces with a low interfacial resistance (~23 Ω cm 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 mA cm −2 at room temperature. By incorporating the above interface into the solid‐state Na metal battery, taking three‐dimensional Na3 V2 (PO4 )3 as the cathode, the full battery offers a high energy density of 291 Wh kg −1 at a high power density of 1860 W kg −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. Abstract : Poor interfacial contact between sodium and solid‐state electrolytes triggers high interface resistance, low critical current density, and high overpotential of Na electroplating/stripping. In this study, the atomically bonding Na and Na3 Zr2 Si2 PO12 electrolytes can be realized by ultrasound welding Na with metallized Na3 Zr2 Si2 PO12 .