A composite of Co-Mo2C nanoparticles supported by nitrogen-doped graphene for stable Li–CO2 batteries

•A composite of Co-Mo2C nanoparticles supported by N-doped graphene was synthesized.•The bimetallic design of Co and Mo2C provided high catalytic activity.•Stable and long cycle Li–CO2 batteries were realized. Li–CO2 batteries are considered promising energy storage systems due to their high energy...

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Bibliographic Details
Published in:Materials letters 2024-05, Vol.363, p.136281, Article 136281
Main Authors: Zhu, Qian-Cheng, Kong, Xu-Yang, Liang, Xing-Hua
Format: Article
Language:English
Subjects:
Bimetallic design
Cathode catalyst
Composite materials
Energy storage and conversion
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Summary:•A composite of Co-Mo2C nanoparticles supported by N-doped graphene was synthesized.•The bimetallic design of Co and Mo2C provided high catalytic activity.•Stable and long cycle Li–CO2 batteries were realized. Li–CO2 batteries are considered promising energy storage systems due to their high energy density and CO2 fixation capability. However, the slow kinetics of the redox reaction leads to high charging overpotential, low energy efficiency, and poor reversibility. Herein, a nitrogen-doped graphene supported Co-Mo2C nanoparticles composite was synthesized and introduced as cathode catalysts for Li–CO2 batteries. The bimetallic catalyst design of Co and Mo2C provides efficient catalytic activity during discharge and charge process, separately. The assembled battery delivered a high discharge capacity and a long cycle stability with a relatively low overpotential.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2024.136281