蒲公英基三维分级多孔炭的制备及电化学性能

doi:10.11896/cldb.19010215

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Abstract Anovel three-dimensional hierarchical porous carbon material was in the process of cleaning, activating and carbonizating of fresh dandelion pappus collected in Dalian area. Their physical properties, microstructures and electrochemcial properties were characterized by thermogravimetric analyzer, X-ray diffraction(XRD) analyzer, scanning electron microscope(SEM), Raman spectrometer and electrochemical workstation. The effects of activation temperature and ratio of activator on the electrochemical properties of carbon materials were studied. As the result, the activated carbon electrode had the best performance at 800 ℃ and 2∶1 ratio of activator, the specific capacitance of the electrode was 163 F/g at a current density of 5 A/g with no capacitance loss after 10 000 cycles, showing excellent stability. This could be attributed to its unique three-dimensional interoperable porous network architecture, which was conducive to the electrolyte into the internal space of activated carbon, thereby maximizing the contact area between the material and the electrolyte, which increased the charge density of double-layer storage and improved the electrochemical performance of activated carbon.

Key words： dandelion porous carbon hierarchical structure supercapacitor electrochemical performance

Published: 15 January 2020

CLC number:

O646.54

About author:: Hongyu Sunhas been studying for his master's degree at Dalian Ocean University since September 2017. He is mainly engaged in the research of biomaterials processing and electrochemical energy storage.;Chao Panreceived his Ph.D. degree in biomedical engineering from Southeast University in 2007. He is currently a professor in Dalian Ocean Univesity. His current scientific interests include one-dimensional nanomaterials, and advanced nanocarbon based materials for energy and environmental applications.

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	SUN Hongyu
	GAO Jingyi
	PAN Chao

Cite this article:

SUN Hongyu,GAO Jingyi,PAN Chao. Preparation and Electrochemical Properties of Dandelion-based Three-dimensional Hierarchical Porous Carbon[J]. Materials Reports, 2020, 34(4): 4007-4012.

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http://www.mater-rep.com/EN/10.11896/cldb.19010215 OR http://www.mater-rep.com/EN/Y2020/V34/I4/4007

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