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Unraveling the limitations of solid oxide electrolytes for all-solid-state electrodes through 3D digital twin structural analysis

Unraveling the limitations of solid oxide electrolytes for all-solid-state electrodes through 3D digital twin structural analysis
Park, JoonamBae, Kyung TaekKim, DohwanJeong, Woo YoungNam, JieunLee, Myeong JuShin, Dong OkLee, Young-GiLee, HongkyungLee, Kang TaekLee, Yong Min
DGIST Authors
Park, Joonam; Bae, Kyung Taek; Kim, Dohwan; Jeong, Woo Young; Nam, Jieun; Lee, Myeong Ju; Shin, Dong Ok; Lee, Young-Gi; Lee, Hongkyung; Lee, Kang Taek; Lee, Yong Min
Issue Date
Nano Energy, 79, 105456
Article Type
Author Keywords
Solid oxide electrolyteAll-solid-state lithium batteriesInterfacial contactDigital twin
Microstructural featuresPolymeric electrolytesSolid oxide electrolytesSolid electrolytesDigital twinElectrochemical electrodesLithium-ion batteriesPolyelectrolytesSolid-State BatteriesSulfur compoundsAll-solid-state lithium batteryElectrochemical performanceElectrochemical reactionsElectrochemical simulationMicrostructural analysis
Solid oxides are attractive electrolyte materials for all-solid-state lithium batteries (ASSLBs) owing to their high stability and pure Li-ion conductivity. Nevertheless, the electrochemical performance of ASSLBs employing solid oxide-based electrolytes cannot compete with ASSLBs with sulfide or polymeric electrolytes due to poor interfacial contact and high boundary resistance between the active materials and solid oxide electrolytes. To overcome this hurdle, elaborate microstructural analysis of the interface of the active material/solid oxide electrolyte in ASSLBs is essentially required since the interfacial contact area dominantly acts as the ion pathway and the electrochemical reaction site in the electrode. Although recent attempts on interfacial structure analysis of ASSLBs have provided simple 2D or semi-3D microstructural features, the results have not yielded deep insights. Herein, we investigated the interfacial defects in an all-solid-state electrode with a solid oxide electrolyte via a 3D digital twin technology combining 3D structural quantification and physico-electrochemical simulations to unravel the intrinsic limitations of solid oxide electrolytes. The in-depth results can be used to design materials and optimize electrode design parameters for ASSLBs. © 2020 Elsevier Ltd
Elsevier BV
Related Researcher
  • Author Lee, Hongkyung Electrochemical Materials & Devices Laboratory
  • Research Interests Batteries; Electrochemistry; Interfaces
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Department of Energy Science and EngineeringElectrochemical Materials & Devices Laboratory1. Journal Articles
Department of Energy Science and EngineeringBattery Materials & Systems LAB1. Journal Articles

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