期刊
SOLID STATE IONICS
卷 379, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.ssi.2022.115905
关键词
All -solid -state battery; Oxide electrolyte; NCM-positive electrode; Full-battery cell; Si -negative electrode
This study focuses on improving the performance of the NCM positive composite electrodes in all-solid-state lithium-ion batteries using highly deformable oxide glass electrolytes. Cold pressing the NCM positive composite electrode significantly enhances its capacity, and the LSCB material used as the electrolyte demonstrates excellent suitability.
All-solid-state lithium-ion batteries with inorganic oxide solid electrolytes (SEs) are considered a suitable choice for next-generation batteries because of their superior safety. Using highly deformable oxide glass electrolytes, in particular, the cold press can effectively improve inter-particle contact and improve battery performance. This study focuses on LiNi1/3Co1/3Mn1/3O2(NCM) positive composite electrodes employing a glass electrolyte system with excellent deformable properties composed of 0.45Li(2)SO(4)-0.30Li(2)CO(3)-0.25LiBr (LSCB). Cyclic voltammetry of LSCB reveals that no significant redox peaks occur until 4.5 V, making it a suitable SE material for NCM positive composite electrodes. At 0.064 mA cm(-2) and 25 & nbsp;C, a NCM positive composite electrode containing 30 wt% of LSCB produced via cold pressing exhibits a relatively high specific capacity of 128 mAh g(-1)(NCM) and an areal capacity of 2.3 mAh cm(-2). Further, this study reports results for a NCM-Si full-battery cell with a relatively high areal capacity of 2.1 mAh cm(-2) and a specific energy density of 205 Wh kg(-1)(positive and negative composite electrodes) at 0.064 mA cm(-2) and 25 & nbsp;C.
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