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Mesoporous boron-doped onion-like carbon as long-life oxygen electrode for sodium-oxygen batteries

Journal Article


Abstract


  • Metal-oxygen batteries are thought to be the ultimate energy storage solution due to their high specific energy. We report here on the synthesis of mesoporous boron-doped onion-like carbon (B-OLC) microspheres and their application in rechargeable sodium-oxygen (Na-O2) batteries. Low overpotential, high specific capacity (over 10200 mA h g-1), enhanced rate capability (���7500 mA h g-1 at 0.6 mA cm-2) and excellent cyclability (up to 125 cycles) can be achieved by using B-OLC based electrodes in Na-O2 batteries. The critical role of surface chemistry on the morphology and composition of products is studied and the optimum performance of Na-O2 batteries with B-OLC based electrodes is attributed to the synergistic effects arising from the combination of catalytic activity and the uniquely mesoporous carbon nanoarchitecture. This study indicates that mesoporous B-OLC demonstrated intriguing properties and great potential applications as effective metal-free bifunctional catalysts for Na-O2 batteries and encourages the development of heteroatom-doped carbon materials for performance improvement of metal-oxygen batteries.

UOW Authors


  •   Shu, Chaozhu (external author)

Publication Date


  • 2016

Citation


  • Shu, C., Lin, Y., Zhang, B., Abd Hamid, S. B., & Su, D. (2016). Mesoporous boron-doped onion-like carbon as long-life oxygen electrode for sodium-oxygen batteries. Journal of Materials Chemistry A, 4(17), 6610-6619. doi:10.1039/c6ta00901h

Scopus Eid


  • 2-s2.0-84968531236

Start Page


  • 6610

End Page


  • 6619

Volume


  • 4

Issue


  • 17

Place Of Publication


Abstract


  • Metal-oxygen batteries are thought to be the ultimate energy storage solution due to their high specific energy. We report here on the synthesis of mesoporous boron-doped onion-like carbon (B-OLC) microspheres and their application in rechargeable sodium-oxygen (Na-O2) batteries. Low overpotential, high specific capacity (over 10200 mA h g-1), enhanced rate capability (���7500 mA h g-1 at 0.6 mA cm-2) and excellent cyclability (up to 125 cycles) can be achieved by using B-OLC based electrodes in Na-O2 batteries. The critical role of surface chemistry on the morphology and composition of products is studied and the optimum performance of Na-O2 batteries with B-OLC based electrodes is attributed to the synergistic effects arising from the combination of catalytic activity and the uniquely mesoporous carbon nanoarchitecture. This study indicates that mesoporous B-OLC demonstrated intriguing properties and great potential applications as effective metal-free bifunctional catalysts for Na-O2 batteries and encourages the development of heteroatom-doped carbon materials for performance improvement of metal-oxygen batteries.

UOW Authors


  •   Shu, Chaozhu (external author)

Publication Date


  • 2016

Citation


  • Shu, C., Lin, Y., Zhang, B., Abd Hamid, S. B., & Su, D. (2016). Mesoporous boron-doped onion-like carbon as long-life oxygen electrode for sodium-oxygen batteries. Journal of Materials Chemistry A, 4(17), 6610-6619. doi:10.1039/c6ta00901h

Scopus Eid


  • 2-s2.0-84968531236

Start Page


  • 6610

End Page


  • 6619

Volume


  • 4

Issue


  • 17

Place Of Publication