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Advanced Nanoparticle Coatings for Stabilizing Layered Ni‐Rich Oxide Cathodes in Solid‐State Batteries

Ma, Yuan 1,2; Teo, Jun Hao 1,2; Walther, Felix; Ma, Yanjiao 1; Zhang, Ruizhuo 1,2; Mazilkin, Andrey 1,2; Tang, Yushu ORCID iD icon 1; Goonetilleke, Damian 1,2; Janek, Jürgen 1,2; Bianchini, Matteo 1,2; Brezesinski, Torsten ORCID iD icon 1,2
1 Institut für Nanotechnologie (INT), Karlsruher Institut für Technologie (KIT)
2 Center for Electrochemical Energy Storage Ulm & Karlsruhe (CELEST), Karlsruher Institut für Technologie (KIT)


Improving the interfacial stability between cathode active material (CAM) and solid electrolyte (SE) is a vital step toward the development of high-performance solid-state batteries (SSBs). One of the challenges plaguing this field is an economical and scalable approach to fabricate high-quality protective coatings on the CAM particles. A new wet-coating strategy based on preformed nanoparticles is presented herein. Nonagglomerated nanoparticles of the coating material (≤5 nm, exemplified for ZrO$_{2}$) are prepared by solvothermal synthesis, and after surface functionalization, applied to a layered Ni-rich oxide CAM, LiNi$_{0.85}$Co$_{0.10}$Mn$_{0.05}$O$_{2}$ (NCM85), producing a uniform surface layer with a unique structure. Remarkably, when used in pelletized SSBs with argyrodite Li$_{6}$PS$_{5}$Cl as SE, the coated NCM85 is found to exhibit superior lithium-storage properties (q$_{dis}$ ≈ 204 mAh g$_{NCM85}$$^{-1}$ at 0.1 C rate and 45 °C) and good rate capability. The key to the observed improvement lies in the homogeneity of coating, suppressing interfacial side reactions while simultaneously limiting gas evolution during operation. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000143639
Veröffentlicht am 10.03.2022
DOI: 10.1002/adfm.202111829
Zitationen: 40
Web of Science
Zitationen: 38
Zitationen: 40
Cover der Publikation
Zugehörige Institution(en) am KIT Center for Electrochemical Energy Storage Ulm & Karlsruhe (CELEST)
Helmholtz-Institut Ulm (HIU)
Institut für Nanotechnologie (INT)
Karlsruhe Nano Micro Facility (KNMF)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2022
Sprache Englisch
Identifikator ISSN: 1616-301X, 1616-3028
KITopen-ID: 1000143639
HGF-Programm 38.02.01 (POF IV, LK 01) Fundamentals and Materials
Weitere HGF-Programme 43.35.03 (POF IV, LK 01) Structural and Functional Behavior of Solid State Systems
Erschienen in Advanced Functional Materials
Verlag Wiley-VCH Verlag
Band 32
Heft 23
Seiten Art.-Nr.: 2111829
Vorab online veröffentlicht am 24.02.2022
Nachgewiesen in Dimensions
Web of Science
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