Revealing Nanoscale Solid-Solid Interfacial Phenomena for Long-Life and High-Energy All-Solid-State Batteries.

Autor:	Banerjee A; Department of NanoEngineering , University of California San Diego , 9500 Gilman Drive , La Jolla , California 92093 , United States., Tang H; Department of NanoEngineering , University of California San Diego , 9500 Gilman Drive , La Jolla , California 92093 , United States., Wang X; Department of NanoEngineering , University of California San Diego , 9500 Gilman Drive , La Jolla , California 92093 , United States., Cheng JH; Department of NanoEngineering , University of California San Diego , 9500 Gilman Drive , La Jolla , California 92093 , United States., Nguyen H; Department of NanoEngineering , University of California San Diego , 9500 Gilman Drive , La Jolla , California 92093 , United States., Zhang M; Department of NanoEngineering , University of California San Diego , 9500 Gilman Drive , La Jolla , California 92093 , United States., Tan DHS; Department of NanoEngineering , University of California San Diego , 9500 Gilman Drive , La Jolla , California 92093 , United States., Wynn TA; Department of NanoEngineering , University of California San Diego , 9500 Gilman Drive , La Jolla , California 92093 , United States., Wu EA; Department of NanoEngineering , University of California San Diego , 9500 Gilman Drive , La Jolla , California 92093 , United States., Doux JM; Department of NanoEngineering , University of California San Diego , 9500 Gilman Drive , La Jolla , California 92093 , United States., Wu T; X-ray Science Division, Advanced Photon Source , Argonne National Laboratory , Lemont , Illinois 60439 , United States., Ma L; X-ray Science Division, Advanced Photon Source , Argonne National Laboratory , Lemont , Illinois 60439 , United States., Sterbinsky GE; X-ray Science Division, Advanced Photon Source , Argonne National Laboratory , Lemont , Illinois 60439 , United States., D'Souza MS; Department of NanoEngineering , University of California San Diego , 9500 Gilman Drive , La Jolla , California 92093 , United States., Ong SP; Department of NanoEngineering , University of California San Diego , 9500 Gilman Drive , La Jolla , California 92093 , United States.; Sustainable Power and Energy Center (SPEC) , University of California San Diego , 9500 Gilman Drive , La Jolla , California 92093 , United States., Meng YS; Department of NanoEngineering , University of California San Diego , 9500 Gilman Drive , La Jolla , California 92093 , United States.; Sustainable Power and Energy Center (SPEC) , University of California San Diego , 9500 Gilman Drive , La Jolla , California 92093 , United States.
Jazyk:	angličtina
Zdroj:	ACS applied materials & interfaces [ACS Appl Mater Interfaces] 2019 Nov 20; Vol. 11 (46), pp. 43138-43145. Date of Electronic Publication: 2019 Nov 06.
DOI:	10.1021/acsami.9b13955
Abstrakt:	Enabling long cyclability of high-voltage oxide cathodes is a persistent challenge for all-solid-state batteries, largely because of their poor interfacial stabilities against sulfide solid electrolytes. While protective oxide coating layers such as LiNbO 3 (LNO) have been proposed, its precise working mechanisms are still not fully understood. Existing literature attributes reductions in interfacial impedance growth to the coating's ability to prevent interfacial reactions. However, its true nature is more complex, with cathode interfacial reactions and electrolyte electrochemical decomposition occurring simultaneously, making it difficult to decouple each effect. Herein, we utilized various advanced characterization tools and first-principles calculations to probe the interfacial phenomenon between solid electrolyte Li 6 PS 5 Cl (LPSCl) and high-voltage cathode LiNi 0.85 Co 0.1 Al 0.05 O 2 (NCA). We segregated the effects of spontaneous reaction between LPSCl and NCA at the interface and quantified the intrinsic electrochemical decomposition of LPSCl during cell cycling. Both experimental and computational results demonstrated improved thermodynamic stability between NCA and LPSCl after incorporation of the LNO coating. Additionally, we revealed the in situ passivation effect of LPSCl electrochemical decomposition. When combined, both these phenomena occurring at the first charge cycle result in a stabilized interface, enabling long cyclability of all-solid-state batteries.
Databáze:	MEDLINE
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