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Issue 12, 2017
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A high-performance oxygen electrode for Li–O2 batteries: Mo2C nanoparticles grown on carbon fibers

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Abstract

While lithium–oxygen batteries (LOBs) have the potential to offer energy density far greater than those of existing batteries, their commercialization hinges on the creation of highly reversible and efficient oxygen electrodes. Here we report our findings in our exploration of a binder-free electrode based on Mo2C nanoparticles grown on carbon cloth (Mo2C@CC), derived from a facile infiltration and high-temperature etching process. When tested in a Li–O2 battery, the Mo2C@CC electrode (with a Mo2C loading of 0.3 mg cm−2) demonstrates excellent rate capability (achieving a discharge capacity of 7646, 9751, and 11 853 mA h g−1 at a rate of 200, 500, and 1000 mA g−1, respectively) while maintaining good cycle stability (for over 700 h at a rate of 500 mA g−1 with a cut-off capacity of 500 mA h g−1). This new electrode architecture opens a promising avenue for the development of high-performance LOBs through optimizing the electrode microstructure.

Graphical abstract: A high-performance oxygen electrode for Li–O2 batteries: Mo2C nanoparticles grown on carbon fibers

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Article information


Submitted
09 Feb 2017
Accepted
27 Feb 2017
First published
28 Feb 2017

J. Mater. Chem. A, 2017,5, 5690-5695
Article type
Communication

A high-performance oxygen electrode for Li–O2 batteries: Mo2C nanoparticles grown on carbon fibers

Y. Luo, C. Jin, Z. Wang, M. Wei, C. Yang, R. Yang, Y. Chen and M. Liu, J. Mater. Chem. A, 2017, 5, 5690
DOI: 10.1039/C7TA01249G

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