Bipolar nitrogen-doped graphene frameworks as high-performance cathodes for lithium ion batteries

Huang Y, Wu D, Dianat A, Bobeth M, Huang T, Mai Y, Zhang F, Cuniberti G, Feng X (2017)

Publication Type: Journal article

Publication year: 2017

Journal

Journal of Materials Chemistry A Royal Society of Chemistry

Book Volume: 5

Pages Range: 1588-1594

Journal Issue: 4

DOI: 10.1039/c6ta09161j

Abstract

Hierarchically porous nitrogen-doped graphene frameworks (N-GFs) are fabricated through the ice-templating of GO with polyethylenimine and the thermal treatment of the resultant hybrids. As cathode materials in lithium ion batteries (LIBs), the obtained N-GFs exhibit an outstanding specific capacity of 379 mA h g^-1 at 0.5 A g^-1 for 2500 cycles. Even at an ultrahigh current density of 5 A g^-1, the N-GFs maintain a capacity of 94 mA h g^-1, superior to that of most reported LIB cathode materials. The experimental results and quantum mechanics calculations suggest that pyridinic-like N and pyridinic N-oxide in graphene are responsible for the excellent cathodic performance of the bipolar N-GFs by providing fast surface faradaic reactions with both p- and n-doped states.

Involved external institutions

Shanghai Jiao Tong University / 上海交通大学

China (CN) Technische Universität Dresden

Germany (DE)

How to cite

APA:

Huang, Y., Wu, D., Dianat, A., Bobeth, M., Huang, T., Mai, Y.,... Feng, X. (2017). Bipolar nitrogen-doped graphene frameworks as high-performance cathodes for lithium ion batteries. Journal of Materials Chemistry A, 5(4), 1588-1594. https://doi.org/10.1039/c6ta09161j

MLA:

Huang, Yanshan, et al. "Bipolar nitrogen-doped graphene frameworks as high-performance cathodes for lithium ion batteries." Journal of Materials Chemistry A 5.4 (2017): 1588-1594.

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