Scalable preparation of practical 1Ah all-solid-state lithium-ion batteries cells and their abuse tests. (March 2023)

• Record Type: Journal Article
• Authors: Zhang, Ningxin; Beutl, Alexander; Rajinovic, Kristijan; Kahr, Jürgen; Jahn, Marcus; Nestoridi, Maria
• Is Part Of: Journal of energy storage. Volume 59(2023)
• Publication Date: 2023-03
• Subjects: Hybrid solid electrolyte -- All-solid-state lithium-ion batteries -- Abuse test -- Practicable areal capacity -- Scalable preparation; Energy storage -- Periodicals; Energy storage -- Research -- Periodicals; 621.3126
• DOI: 10.1016/j.est.2022.106547
• Languages: English
• ISSNs: 2352-152X

Abstract

Abstract: All-solid-state lithium-ion batteries are considered as a promising electric energy storage platform for electric vehicles due to the replacement of flammable liquid organic electrolytes in current lithium-ion batteries by inflammable solid ones; thus promoting high safety. Despite plenty of research on various solid electrolytes and other components, reports on the scalable production of all-solid-state lithium-ion batteries using electrodes with meaningful areal capacities are rather scarce. Consequently, the safety of all-solid-state lithium-ion batteries has not been systematically investigated yet, especially on cells with higher than lab-scale capacities. The aim of this report is to build a bridge between academic research and more industrially meaningful information on the safety of all-solid-state lithium-ion batteries. Thus, three 1Ah all-solid-state lithium-ion batteries were fabricated, where hybrid solid electrolyte consisting of PEO-LiTFSI polymer matrix with Lithium Ionic Conductive Glass Ceramic (LICGC™, Ohara Inc.) particle as active filler was sandwiched between NMC622 cathode and advanced graphite MCMB anode, both of which have a practically valuable areal capacity of higher than 1.0 mAh/cm 2 . Initial formation cycling was performed to build conformal interface between solid electrolyte film and electrodes. Comparable specific capacity of cathode active materials (∼90.0 mAh/g @ C/10 & 60 °C) could be achieved in three pouch cells with high consistence. Typical abuse tests including overcharge, external short, and nail penetration were conducted, the three 1Ah all-solid-state lithium-ion batteries cells showed excellent safety performance: there was no thermal runaway, no explosion, only slight increase of temperature was observed. This work demonstrates the scalable fabrication of practical all-solid-state lithium-ion batteries with consistent electrochemical performance and thereafter confirms their intrinsic safety. Highlights: Scalable preparation of hybrid solid-state electrolyte was achieved. Three 1Ah all-solid-state lithium-ion batteries cells with practical areal capacity 1.0 mAh/cm 2 in electrodes were fabricated. Abuse tests including overcharge, external short and nail penetration were conducted, cells showed excellent performance.