NDLI: Cubic garnet solid polymer electrolyte for room temperature operable all-solid-state-battery

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Cubic garnet solid polymer electrolyte for room temperature operable all-solid-state-battery

Content Provider	Directory of Open Access Journals (DOAJ)
Author	Sung Nam Lim Min-Ho Seo Young-Woo Lee Quoc Hung Nguyen Soon-Ki Jeong Namchul Cho Moon Gyu Park Wook Ahn Younghyun Cho Van Tung Luu Hoang Long Nguyen Yun-Seok Jun
Abstract	Solid polymer electrolytes are promising candidates for implementation in next-generation all-solid-state batteries (ASSBs) which could replace conventional batteries used today. However, the materialization of ASSBs on a mass scale is restricted by the low ionic conductivity and high interfacial resistance of solid electrolytes. In this work, succinonitrile (SN) with lithium (trifluoromethylsulphonyl)imide (LiTFSI) and Al-doped Li7La3Zr2O12 (Al-LLZO) nanoparticles were used to improve the ionic conductivity of a polyethylene oxide-based composite electrolyte. The Al-LLZO nanoparticles were synthesized by a facile synthesis process at low temperatures, which contributed to an enhancement in the ionic conductivity. A solid polymer electrolyte with 7.5 wt% of Al-LLZO and 15 wt% of SN achieved a high ionic conductivity of 4.17 × 10−4 Scm−1 at room temperature and a large value of 0.451 for the lithium-ion transport number at 60 °C. By adding 10 wt% SN and 10 wt% of Al-LLZO in the LiFePO4 cathode, the cell could operate at 25 °C with a specific capacity of 130 mAh g−1 and 89% capacity retention after 200 cycles at current density of 20 mA g−1. This study therefore proposes a solution to improve the ionic conductivity of solid polymer electrolytes in all-solid-state batteries.
Related Links	http://www.sciencedirect.com/science/article/pii/S2238785421013351
ISSN	22387854
DOI	10.1016/j.jmrt.2021.11.055
Journal	Journal of Materials Research and Technology
Volume Number	15
Language	English
Publisher	Elsevier
Publisher Date	2021-01-01
Publisher Place	Netherlands
Access Restriction	Open
Subject Keyword	Mining Engineering. Metallurgy All-solid-state Solid Polymer Electrolytes Cubic Garnet Llzo Lithium-ion Battery Succinonitrile
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Surfaces, Coatings and Films Metals and Alloys Biomaterials

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