What question did this study set out to answer?

To suppress chemical and electrochemical electrolyte degradation by passivating the cathode–electrolyte interface in 5 V-class all-solid-state batteries.

May 27, 2020ACS Applied Materials & Interfaces

Passivation of the Cathode–Electrolyte Interface for 5 V-Class All-Solid-State Batteries

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Authors

GLGaozhan LiuChinese Academy of Sciences YLYong LüNankai University HWHongli WanChinese Academy of Sciences

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Implication

Experimental study demonstrates enhanced electrochemical stability via lithium niobate coatings on high-voltage cathodes, indicating interfacial passivation enables durable solid-state batteries.

Key Points

To suppress chemical and electrochemical electrolyte degradation by passivating the cathode–electrolyte interface in 5 V-class all-solid-state batteries.
Coated pristine spinel LiNi0.5Mn1.5O4 (LNMO) cathode particles with varying amounts of oxide materials (LiNbO3, Li3PO4, and Li4Ti5O12) using a wet-chemistry approach.
Fabricated composite cathodes containing surface-modified LNMO and Li6PS5Cl (LPSCl) solid electrolyte in a 70:30 weight ratio.
Evaluated interfacial stability and electrochemical discharge capacity across continuous cycling.
Identified that an 8 wt % LiNbO3 coating provided the most effective interfacial passivation among the evaluated oxide coatings.
Delivered an initial discharge capacity of 115 mA h g–1 and a reversible discharge capacity of 80 mA h g–1 at the 20th cycle in the 8 wt % LiNbO3-coated LNMO composite cathode.

Cite This Study

Liu et al. (2020) studied this question.

synapsesocial.com/papers/6a7c0687073f483584dfb00c https://doi.org/10.1021/acsami.0c03610

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Implication

Experimental study demonstrates enhanced electrochemical stability via lithium niobate coatings on high-voltage cathodes, indicating interfacial passivation enables durable solid-state batteries.

Passivation of the Cathode–Electrolyte Interface for 5 V-Class All-Solid-State Batteries

Discussion

Member takes

Implication

Key Points

Cite This Study

Passivation of the Cathode–Electrolyte Interface for 5 V-Class All-Solid-State Batteries

Discussion

Member takes

Implication

Key Points

Cite This Study

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