Shin, Hyeon-Ji Kim, Jun Tae Kim, A-Yeon Noh, Namgyu Park, Jungjae Park, Chang Reung Yu, Seungho Kim, Hyoungchul Chung, Kyung Yoon Yuk, Jong Min Myung, Seung-Taek Jung, Hun-Gi 2024-01-19T08:32:31Z 2024-01-19T08:32:31Z 2023-08-31 2023-10 1614-6832 https://pubs.kist.re.kr/handle/201004/113229 Sulfide-based all-solid-state batteries (ASSBs) are next-generation batteries, which resolve the safety issues of energy storage systems. Elaborated intimate contact by providing constant external pressure using a customized cell is a way to overcome chemo-mechanical deterioration associated with interfacial issues; however, it is not a practical approach. Here, ASSBs are evaluated by adopting a typical coin-type cell at low pressure (& AP;0.3 MPa) and it is confirmed that cathode deterioration is a more significant factor in lowering capacity retention than contact loss. Sulfide is infused surprisingly along the grain boundary of the cathode, causing gradual lithium deficiency in the cathode active materials by capturing the active lithium, which is revealed by time-of-flight secondary-ion mass spectroscopy using a lithium isotope (Li-6). This study sheds light on the urgency of resolving the depletion of lithium ingredients during cycling rather than surface modification, by investigating the factors that accelerate degradation of the cathode during low-pressure operation of ASSBs. English Wiley-VCH Verlag New Consideration of Degradation Accelerating of All-Solid-State Batteries under a Low-Pressure Condition Article 10.1002/aenm.202301220 1 Advanced Energy Materials, v.13, no.40 Advanced Energy Materials 13 40 N scie scopus 001049834400001 2-s2.0-85168258028 Chemistry, Physical Energy & Fuels Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Energy & Fuels Materials Science Physics Article LITHIUM ELECTROLYTES ELECTRODES STABILITY CATHODE LICOO2 CAPACITY all-solid-state batteries argyrodite cathode deterioration phase transformation sulfur infusion