Journalartikel

Jahr der Veröffentlichung: 2022

Zeitschrift: Advanced Functional Materials

Bandnummer: 32

Heftnummer: 23

ISSN: 1616-301X

Open Access Status: Hybrid

DOI Link: https://doi.org/10.1002/adfm.202111829

Verlag: Wiley

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 (q(dis) approximate to 204 mAh g(NCM85)(-1) at 0.1 C rate and 45 degrees 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. Moreover, this strategy is proven to have a similar effect in liquid electrolyte-based Li-ion batteries and can potentially be used for the application of other, even more favorable, nanoparticle coatings.

Harvard-Zitierstil: Ma, Y., Teo, J., Walther, F., Ma, Y., Zhang, R., Mazilkin, A., et al. (2022) Advanced Nanoparticle Coatings for Stabilizing Layered Ni-Rich Oxide Cathodes in Solid-State Batteries, Advanced Functional Materials, 32(23), Article 2111829. https://doi.org/10.1002/adfm.202111829

APA-Zitierstil: Ma, Y., Teo, J., Walther, F., Ma, Y., Zhang, R., Mazilkin, A., Tang, Y., Goonetilleke, D., Janek, J., Bianchini, M., & Brezesinski, T. (2022). Advanced Nanoparticle Coatings for Stabilizing Layered Ni-Rich Oxide Cathodes in Solid-State Batteries. Advanced Functional Materials. 32(23), Article 2111829. https://doi.org/10.1002/adfm.202111829