3D Hierarchical Boron-Doped Diamond-Multilayered Graphene Nanowalls as an Efficient Supercapacitor Electrode - Publication - MOST Wiedzy

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3D Hierarchical Boron-Doped Diamond-Multilayered Graphene Nanowalls as an Efficient Supercapacitor Electrode

Abstract

Synthesis of stable hybrid carbon nanostructure for high-performance supercapacitor electrode with long life-cycle for electronic and energy storage devices is a real challenge. Here, we present a one-step synthesis method to produce conductive boron-doped hybrid carbon nanowalls (HCNWs), where sp2-bonded graphene has been integrated with and over a three-dimensional curved wall-like network of sp3-bonded diamond. The spectroscopic studies such as X-ray absorption, Raman, and X-ray photoelectrons clearly reveal the coexistence of diamond and graphene in these nanowalls, while the detailed transmission electron microscopy studies confirm the unique microstructure where a diamond nanowall is encased by a multilayered graphene. Interestingly, these HCNWs yield a high double layer capacitance value of 0.43 mF cm–2 and electrode retention of 98% over 10 000 cycles of charging/discharging in 1 M Na2SO4 electrolyte. The remarkable supercapacitive performance can be attributed to the 3D interconnected network of diamond nanowalls surrounded by highly conducting graphene.

Citations

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Details

Category:
Magazine publication
Type:
artykuł w czasopiśmie wyróżnionym w JCR
Published in:
Journal of Physical Chemistry C
ISSN: 1932-7447
Language:
English
Publication year:
2019
Bibliographic description:
Banerjee D., Kamatchi S., Sujit D., Ficek M., Gourav B., Ryl J., Maheshwar Phase D., Gupta M., Bogdanowicz R., Lin I., Kanjilal A., Haenen K., Sinha Roy S.: 3D Hierarchical Boron-Doped Diamond-Multilayered Graphene Nanowalls as an Efficient Supercapacitor Electrode// Journal of Physical Chemistry C. -, (2019), s.-
DOI:
Digital Object Identifier (open in new tab) 10.1021/acs.jpcc.9b03628
Sources of funding:
Verification:
Gdańsk University of Technology

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