What question did this study set out to answer?

To investigate the effects of an atomic-layer-deposited Ru-RuOx mixed protective layer on the conductivity of LiCoO2 cathodes in Li-ion batteries.

February 19, 2026Journal of Materials Chemistry A1 citationsOpen Access

Atomic-layer-deposited Ru-RuOx mixed protective layer for improving ionic-electronic conductivity of sintered LiCoO2 cathode in Li-ion batteries

KKKyu Moon KwonHanyang University JHJi Won HanHanyang University JPJoung won ParkSamsung (South Korea)

Key Points

To investigate the effects of an atomic-layer-deposited Ru-RuOx mixed protective layer on the conductivity of LiCoO2 cathodes in Li-ion batteries.
Utilized atomic layer deposition for applying Ru-RuOx protective layer.
Evaluated the ionic and electronic conductivity of sintered LiCoO2 cathodes before and after layering.
Conducted performance tests to assess energy density improvements.
Significant increase in ionic conductivity observed in modified LiCoO2 cathodes.
Electronic conductivity also improved, enhancing overall battery efficiency.
High-density sintered structures showed promising energy density compared to traditional designs.

Abstract

The use of high-density three-dimensional sintered (HTS) cathode plates is a promising approach for increasing the energy density of Li-ion batteries. However, their performances are limited by the absence of...

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