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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)

Abstract:

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 ZrO2) are prepared by solvothermal synthesis, and after surface functionalization, applied to a layered Ni-rich oxide CAM, LiNi0.85Co0.10Mn0.05O2 (NCM85), producing a uniform surface layer with a unique structure. Remarkably, when used in pelletized SSBs with argyrodite Li6PS5Cl as SE, the coated NCM85 is found to exhibit superior lithium-storage properties (qdis ≈ 204 mAh gNCM851 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

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 Scopus
Dimensions
OpenAlex
Web of Science
Globale Ziele für nachhaltige Entwicklung Ziel 7 – Bezahlbare und saubere Energie

Verlagsausgabe §
DOI: 10.5445/IR/1000143639
Veröffentlicht am 10.03.2022
Originalveröffentlichung
DOI: 10.1002/adfm.202111829
Scopus
Zitationen: 76
Web of Science
Zitationen: 80
Dimensions
Zitationen: 72
Seitenaufrufe: 199
seit 12.03.2022
Downloads: 235
seit 15.03.2022
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