Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Improved Pseudocapacitive Performance of Graphene Architectures Modulating by Nitrogen/Phosphorus Dual-Doping and Steam-Activation

Improved Pseudocapacitive Performance of Graphene Architectures Modulating by Nitrogen/Phosphorus... Steam-assistant nitrogen (N) and phosphorus (P) co-doping of graphene (s-NPG) architectures are constructed by a facile chemical converted method and thermal activation. Steam-activation treatment can provide abundant porous structure for fast ion diffusion and expose more electrochemical active-sites for surface faradic reaction. The wrinkled surface of S-NPG with a large surface area is probed by microscopic analysis. The spectroscopic analysis confirms the existence of pyridinic-N and C-P-O bonds for s-NPG, which are the dominant electroactive sites for accommodating the protons or charges. Therefore, s-NPG exhibits a high specific capacitance of 317 F g−1 at 1 A g−1 with a good rate capability of 87% and cyclic stability of 97.7% after 20,000 cycles. The excellent pseudocapacitive behavior can be attributed to the synergistic effect of hierarchical structure with and surface modification by N and P dual-doping. The simple steam-assistant treatment can be a potential way to construct the hierarchically structured electrode materials for supercapacitors.[graphic not available: see fulltext] http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png "Macromolecular Research" Springer Journals

Improved Pseudocapacitive Performance of Graphene Architectures Modulating by Nitrogen/Phosphorus Dual-Doping and Steam-Activation

Download PDF
7 pages

Loading next page...
 
/lp/springer-journals/improved-pseudocapacitive-performance-of-graphene-architectures-8klettugqu

References (35)

Publisher
Springer Journals
Copyright
Copyright © The Polymer Society of Korea and Springer 2021
ISSN
1598-5032
eISSN
2092-7673
DOI
10.1007/s13233-021-9075-7
Publisher site
See Article on Publisher Site

Abstract

Steam-assistant nitrogen (N) and phosphorus (P) co-doping of graphene (s-NPG) architectures are constructed by a facile chemical converted method and thermal activation. Steam-activation treatment can provide abundant porous structure for fast ion diffusion and expose more electrochemical active-sites for surface faradic reaction. The wrinkled surface of S-NPG with a large surface area is probed by microscopic analysis. The spectroscopic analysis confirms the existence of pyridinic-N and C-P-O bonds for s-NPG, which are the dominant electroactive sites for accommodating the protons or charges. Therefore, s-NPG exhibits a high specific capacitance of 317 F g−1 at 1 A g−1 with a good rate capability of 87% and cyclic stability of 97.7% after 20,000 cycles. The excellent pseudocapacitive behavior can be attributed to the synergistic effect of hierarchical structure with and surface modification by N and P dual-doping. The simple steam-assistant treatment can be a potential way to construct the hierarchically structured electrode materials for supercapacitors.[graphic not available: see fulltext]

Journal

"Macromolecular Research" – Springer Journals

Published: Sep 1, 2021

Keywords: steam activation; heteroatom; supercapacitor; architecture; graphene

There are no references for this article.