Journal article

Publication year: 2021

Pages: 2101370-

Journal: Advanced Energy Materials

Volume number: 11

Issue number: 31

ISSN: 1614-6832

Open access status: Hybrid

DOI Link: https://doi.org/10.1002/aenm.202101370

Publisher: Wiley

Abstract: 
All-solid-state batteries with conversion-type cathodes promise to exceed the performance of lithium-ion batteries due to their high theoretical specific energy and potential safety. However, the reported performance of solid-state batteries is still unsatisfactory due to poor electronic and ionic conduction in the composite cathodes. Here, in situ formation of active material as well as highly effective ion- and electron-conducting paths via electrochemical decomposition of Li6PS5Cl0.5Br0.5 (LPSCB)/multiwalled carbon nanotube mixtures during cycling is reported. Effectively, the LPSCB electrolyte forms a multiphase conversion-type cathode by partial decomposition during the first discharge. Comprehensive characterization, especially operando pressure monitoring, reveals a co-redox process of two redox-active elements during cycling. The monolithic LPSCB-based cell shows stable cycling over 1000 cycles with a very high capacity retention of 94% at high current density (0.885 mA cm(-2), approximate to 0.7 C) at room temperature and a high areal capacity of 12.56 mAh cm(-2) is achieved.

Harvard Citation style: Wang, S., Tang, M., Zhang, Q., Li, B., Ohno, S., Walther, F., et al. (2021) Lithium Argyrodite as Solid Electrolyte and Cathode Precursor for Solid-State Batteries with Long Cycle Life, Advanced Energy Materials, 11(31), p. 2101370. https://doi.org/10.1002/aenm.202101370

APA Citation style: Wang, S., Tang, M., Zhang, Q., Li, B., Ohno, S., Walther, F., Pan, R., Xu, X., Xin, C., Zhang, W., Li, L., Shen, Y., Richter, F., Janek, J., & Nan, C. (2021). Lithium Argyrodite as Solid Electrolyte and Cathode Precursor for Solid-State Batteries with Long Cycle Life. Advanced Energy Materials. 11(31), 2101370. https://doi.org/10.1002/aenm.202101370