Mo2CTx Supported Ruthenium Nanoparticles as Efficient Cathode Catalyst for Li-CO2 Battery with High Capacity and Long Cycle Life

doi:10.1007/s40242-025-5032-x

Abstract

Abstract: Li-CO₂ batteries have garnered considerable attention due to their high energy density and their ability to utilize CO₂ resources. However, the generation of insulating discharge product Li₂CO₃ severely weakens its cyclability, which places high demands on the cathode catalyst in Li-CO₂ batteries. This study focuses on the development of Ru nanoparticles modified Mo₂CT_x as the cathode for Li-CO₂ batteries, which is integrated with a high surface area, abundant active sites, and enhanced conductivity. As a result, the Ru@Mo₂CT_x cathode achieves a remarkable discharge capacity of 20995 mA·h·g^-1 and a long cycle life of 1750 h. Additionally, density functional theory calculations provide further insights into the enhancement in absorptivity with Ru introduced onto Mo₂CT_x. This research paves the way for manipulating the catalytic activity of Mo₂CT_x and reducing the amount of usage of Ru in Li-CO₂batteries.

Key words: Catalyst, MXene, Ru nanoparticle, Long cycle life

GONG Xi, LI Hao, FAN Ke, LIN Zezhou, ZHANG Jing, HUANG Haitao. Mo₂CT_x Supported Ruthenium Nanoparticles as Efficient Cathode Catalyst for Li-CO₂ Battery with High Capacity and Long Cycle Life[J]. Chemical Research in Chinese Universities, 2025, 41(3): 511-518.

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Mo₂CT_x Supported Ruthenium Nanoparticles as Efficient Cathode Catalyst for Li-CO₂ Battery with High Capacity and Long Cycle Life

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