Exceptionally High Ionic Conductivity in Na3P0.62As0.38S4 with Improved Moisture Stability for Solid‐State Sodium‐Ion Batteries. Issue 16 (20th February 2017)

• Record Type: Journal Article
• Authors: Yu, Zhaoxin; Shang, Shun‐Li; Seo, Joo‐Hwan; Wang, Daiwei; Luo, Xiangyi; Huang, Qingquan; Chen, Shuru; Lu, Jun; Li, Xiaolin; Liu, Zi‐Kui; Wang, Donghai
• Is Part Of: Advanced materials. Volume 29:Issue 16(2017)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2017-02-20
• Subjects: all‐solid‐state battery -- first‐principles calculations -- sodium‐ion conductor -- solid‐state electrolyte -- sulfide; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adma.201605561
• Languages: English
• ISSNs: 0935-9648

Abstract

Abstract : A Na‐ion solid‐state electrolyte, Na3 P0.62 As0.38 S4, is developed with an exceptionally high conductivity of 1.46 mS cm –1 at 25 °C and enhanced moisture stability. Dual effects of alloying element As (lattice expansion and a weaker AsS bond strength) are responsible for the superior conductivity. Improved moisture stability is regulated by shifting low‐energy moisture reactions to high‐energy ones due to As.