Highly dispersed metal and oxide nanoparticles on ultra-polar carbon as efficient cathode materials for Li-O2 batteries

Lu X, Hao GP, Sun X, Kaskel S, Schmidt OG (2017)

Publication Type: Journal article

Publication year: 2017

Journal

Journal of Materials Chemistry A Royal Society of Chemistry

Book Volume: 5

Pages Range: 6284-6291

Journal Issue: 13

DOI: 10.1039/c7ta00777a

Abstract

Li-O2 batteries trigger worldwide interest as promising candidates for future energy supplies. One of the major challenges regarding current Li-O2 batteries is exploring highly efficient cathodes with sophisticated structures and compositions. Herein, highly dispersed metal (Pd) or oxide (RuO2) nanoparticles on ultra-polar carbon are synthesized and employed as cathode materials for Li-O2 batteries. The hierarchically porous structure of the carbon facilitates the oxygen diffusion and electrolyte impregnation and provides enough space to accommodate the discharge products. More importantly, the porous carbon with the ultra-polar surface serves as an efficient support for distinct dispersion of Pd or RuO2 nanoparticles which not only greatly enhances the catalytic activity but also eases side reactions by passivating the carbon defects. By virtue of the hierarchical structure associated with the extremely high dispersion of active particles, the battery performance is effectively enhanced by greatly prolonging the cycle life and significantly lowering the overvoltages especially for the charging process. The encouraging results suggest that such ultra-polar hierarchical carbon-based composites can be appealing materials for rechargeable Li-O2 batteries.

Involved external institutions

Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden e.V. (IFW) / Leibniz Institute for Solid State and Materials Research Dresden

Germany (DE) Technische Universität Dresden

Germany (DE)

How to cite

APA:

Lu, X., Hao, G.-P., Sun, X., Kaskel, S., & Schmidt, O.G. (2017). Highly dispersed metal and oxide nanoparticles on ultra-polar carbon as efficient cathode materials for Li-O2 batteries. Journal of Materials Chemistry A, 5(13), 6284-6291. https://doi.org/10.1039/c7ta00777a

MLA:

Lu, Xueyi, et al. "Highly dispersed metal and oxide nanoparticles on ultra-polar carbon as efficient cathode materials for Li-O2 batteries." Journal of Materials Chemistry A 5.13 (2017): 6284-6291.

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