Journalartikel

Jahr der Veröffentlichung: 2018

Seiten: 992-996

Zeitschrift: ACS Energy Letters

Bandnummer: 3

Heftnummer: 4

ISSN: 2380-8195

DOI Link: https://doi.org/10.1021/acsenergylett.8b00275

Verlag: American Chemical Society

Abstract: 
The implementation of all-solid-state batteries (ASSBs) is regarded as an important step toward next-generation energy storage systems, in particular for electric vehicles and portable electronics. This may be achieved through application of layered Ni-rich oxide cathode materials such as L1+x(Ni1-y-zCoyMnz)(1-x)O-2 (NCM) with high specific capacity and thiophosphate-based solid electrolytes. Here, the profound effect that the secondary particle size of the cathode active material has on the capacity of ASSB cells comprising NCM622 (60% Ni), beta-Li3PS4, and In anode is demonstrated. We show the benefits of using small particles (d << 10 mu m), allowing virtually full charge capacity. This finding is rationalized through galvanostatic charge-discharge tests and complementary ex situ and operando X-ray diffraction experiments combined with Rietveld refinement analysis. Our results indicate the importance of considering and avoiding electrochemically inactive electrode material in bulk-type ASSBs, which we show using charge transport measurements is due to poor electronic contact (in carbon-free cathode composites).

Harvard-Zitierstil: Strauss, F., Bartsch, T., de Biasi, L., Kim, A., Janek, J., Hartmann, P., et al. (2018) Impact of Cathode Material Particle Size on the Capacity of Bulk-Type All-Solid-State Batteries, ACS Energy Letters, 3(4), pp. 992-996. https://doi.org/10.1021/acsenergylett.8b00275

APA-Zitierstil: Strauss, F., Bartsch, T., de Biasi, L., Kim, A., Janek, J., Hartmann, P., & Brezesinski, T. (2018). Impact of Cathode Material Particle Size on the Capacity of Bulk-Type All-Solid-State Batteries. ACS Energy Letters. 3(4), 992-996. https://doi.org/10.1021/acsenergylett.8b00275