Hierarchical porous carbon nanoarchitectonics with honeycomb-like and N, P co-doped features for flexible symmetric supercapacitors and high-efficiency dye removal

Ma Xuedong; Deng Jie; Zhang RuiyingLi ShuangZhang Riguang

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Hierarchical porous carbon nanoarchitectonics with honeycomb-like and N, P co-doped features for flexible symmetric supercapacitors and high-efficiency dye removal

机译：Hierarchical porous carbon nanoarchitectonics with honeycomb-like and N, P co-doped features for flexible symmetric supercapacitors and high-efficiency dye removal

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In this study, we prepared a variety of hierarchical porous carbon (NPy-HPC) nanoarchitectonics with honeycomb-like and nitrogen-phosphorus co-doping features utilizing a combination of self-doping and external doping ways to maximally improve the properties of biomass-derived porous carbon. The as-obtained NP1.0-HPC possesses an appropriate heteroatom content (3.15 at.% for nitrogen and 0.3 at.% for phosphorous), high specific surface area of 2141 m2 g-1 and total pore volume of 1.04 cm3 g-1, making it a potentially bifunctional material for electrochemical energy storage and dye removal applications. The free-standing NP1.0-HPC electrode exhibits excellent electrochemical performance with a high specific capacitance of 378.8 F g-1 at 1 A g-1 and a good rate capability of 271.6 F g-1 when increasing the current density to 20 A g-1. The NP1.0-HPC//NP1.0-HPC symmetrical supercapacitor as well displays a desirable energy density of 17.7 Wh kg-1 at a power density of 440 W kg-1. Besides, NP1.0-HPC shows well removal capability for various kinds of dyes, among which the cationic dye methylene blue and the anionic dye methyl orange with the uptake of 666.9 and 360.9 mg g-1, respectively. Our work proposes a facile and cost-effective strategy for the exploration and development of superior performance controllable three-dimensional (3D) laminated porous carbon nanoarchitectonics.

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来源
《Journal of Energy Storage》 |2023年第8期|1.1-1.16|共16页
作者
Ma Xuedong; Deng Jie; Zhang RuiyingLi ShuangZhang Riguang;
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作者单位

Northwest Univ;

Taiyuan Univ Technol;

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正文语种英语
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Nitrogen-phosphorus co -doping; Hierarchical porous carbon; Nanoarchitectonic; Symmetrical supercapacitor; Dye removal;

Hierarchical porous carbon nanoarchitectonics with honeycomb-like and N, P co-doped features for flexible symmetric supercapacitors and high-efficiency dye removal

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