Stabilizing the Interface between Sodium Metal Anode and Sulfide-Based Solid-State Electrolyte with an Electron-Blocking Interlayer

Journal Article · Tue Feb 26 00:00:00 EST 2019 · ACS Applied Materials and Interfaces

DOI:https://doi.org/10.1021/acsami.8b19984· OSTI ID:1524408

Hu, Pu ^[1]; Zhang, Ye ^[1]; Chi, Xiaowei ^[1]; Rao, Karun Kumar ^[1]; Hao, Fang  ^[1]; Dong, Hui  ^[1]; Guo, Fangmin ^[2]; Ren, Yang ^[2]; Grabow, Lars C.  ^[1]; Yao, Yan  ^[1]

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1. Univ. of Houston, Houston, TX (United States)
2. Argonne National Lab. (ANL), Argonne, IL (United States)

Sulfide-based Na-ion conductors are promising electrolytes for all-solid-state sodium batteries (ASSSBs) because of high ionic conductivity and favorable formability. However, no effective strategy has been reported for long-duration Na cycling with sulfide-based electrolytes because of interfacial challenges. Here we demonstrate that a cellulose–poly(ethylene oxide) (CPEO) interlayer can stabilize the interface between sulfide electrolyte (Na₃SbS₄) and Na by shutting off the electron pathway of the electrolyte decomposition reaction. In conclusion, we achieved stable Na plating/stripping for 800 cycles at 0.1 mA cm^–2 in all-solid-state devices at 60 °C.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE Advanced Research Projects Agency - Energy (ARPA-E)
• Grant/Contract Number: AC02-06CH11357
• OSTI ID: 1524408
• Journal Information: ACS Applied Materials and Interfaces, Vol. 11, Issue 10; ISSN 1944-8244
• Publisher: American Chemical Society (ACS)
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
Na metal anode
Na3SbS4
interfacial stability
polymer composite interlayer
sulfide-based solid electrolyte