All-Solid-State Lithium Battery Fitted with Polymer Electrolyte Enhanced by Solid Plasticizer and Conductive Ceramic Filler. Issue 14 (17th November 2018)

• Record Type: Journal Article
• Authors: Chen, Fei; Zha, Wenping; Yang, Dunjie; Cao, Shiyu; Shen, Qiang; Zhang, Lianmeng; Sadoway, Donald R.
• Is Part Of: Journal of the Electrochemical Society. Volume 165:Issue 14(2018)
• Page Start: A3558
• Page End: A3565
• Publication Date: 2018-11-17
• Subjects: Batteries -- Batteries -- solid electrolytes -- succinonitrile; Electrochemistry -- Periodicals; 541.3705
• DOI: 10.1149/2.1371814jes
• Languages: English
• ISSNs: 0013-4651

Abstract

Abstract : The scalable multifunctional solid electrolyte (MSE) composed of poly(ethylene oxide)-solid oxide lithium-ion conductor Li7 La3 Zr2 O12 -succinonitrile (PEO18 -LiTFSI-LLZO-SN) is demonstrated as a promising candidate for high performance all-solid-state batteries. Among these electrolytes, PEO18 -LiTFSI-7.5%LLZO-10%SN presents a highest ionic conductivity of 1.19 × 10 −4 S·cm −1 at room temperature and a much higher Li + transference number. Moreover, this MSE has a good electrochemical stability of 5.5 V vs. Li/Li +, and exhibits excellent interfacial compatibility against lithium electrode. Owing to the improved interface contact and enhanced Li + transference, the MSE-based ASSLBs present outstanding cycling and rate performance at 60°C. Notably, the initial discharge capacity at 1 C is 130.2 mAh·g −1, and after 500 cycles 80.0% capacity is retained. The cell can be operated normally at lower temperatures (30°C and 45°C) while still delivering a relatively high specific capacity.