What question did this study set out to answer?

This research aims to evaluate the effects of a MOF-LATP composite solid electrolyte on lithium-ion batteries.

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June 4, 2026

Oxygen Evolution Barrier and Lithium-Ion Transport Promotion Effects of MOF-LATP Composite Solid Electrolyte for High-Energy-Density Lithium Batteries

Key Points

This research aims to evaluate the effects of a MOF-LATP composite solid electrolyte on lithium-ion batteries.
Analyzed lithium-ion transference number and electrochemical window.
Tested NCM811||C and NCM811||Li pouch cells under overcharge conditions.
Conducted interfacial analysis for the solid electrolyte interphase.
Capacity retention of 90.8% after 100 cycles at 1C for NCM811||C cells.
Capacity retention of 79.4% after 500 cycles at 1C for NCM811||Li cells.
MOF layer captures cathode-released oxygen and enhances electrochemical performance.

Abstract

, a lithium-ion transference number of 0.72, and a wide electrochemical window of 5.4 V. When applied in NCM811||C pouch cells, the composite separator significantly suppresses gas evolution during overcharge (1C, 3 h) and maintains 90.8% capacity retention after 100 cycles at 1C. Furthermore, NCM811||Li cells achieve 79.4% retention after 500 cycles at 1C. Interfacial analysis confirms that the MOF layer effectively captures cathode-released oxygen, while synergistically cooperating with the PVDF-HFP layer to construct a stable, LiF-rich solid electrolyte interphase (SEI), thereby significantly boosting the electrochemical performance and safety of high-voltage lithium-ion batteries.

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