Xizhi Wang, Xiaofei Zeng and Dapeng Cao
State Key Laboratory of Organic-Inorganic Composites, and Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
#These authors contributed equally to this work
Currently, developing high performance supercapacitor material suitable for application in the areas, which require high energy density battery, is still a great challenge. Here, we use biomass poplar sawdust as precursors to prepare nitrogen-doped porous carbons (NPC) and the NPC/polyaniline (PANI) composites, and further explore its application in supercapacitor electrodes. By optimizing the carbonization temperature, we find the NPC-750 sample shows a highest specific capacitance of 362 F∙g-1 in 6 M KOH at 0.5 A∙g-1 among the four samples, due to its large specific surface area of 2149 m2·g-1, and suitable pore size distribution and high graphitization degree. Further investigations indicate that NPC/PANI composite exhibits a much higher specific capacitance of 312 F∙g-1 than 252 F∙g-1 of NPC at 5 A∙g-1, and a wider voltage range of 0-1.4 V than the one of 0-1V of NPC, as well as a much higher energy density of 15.45 Wh∙kg−1, which is 2.73 times of 5.66 Wh∙kg−1 of NPC. This work indicates that integrating porous carbon and PANI into a composite is a promising strategy for developing high performance supercapacitor electrode materials.
Received: 15 Mar 2018
Accepted: 25 Mar 2018
Published online: 26 Mar 2018
Article type:
Research Paper
DOI:
10.30919/es.180325
Volume:
1
Page:
55-63
Citation:
Engineered Science, 2018, 1, 55-63
Permissions:
Copyright
Number of downloads:
5279
Citation Information:
58
Description:
Nitrogen-doped porous carbons (NPC) derived from biomass poplar sawdust were used to prepare po....
Nitrogen-doped porous carbons (NPC) derived from biomass poplar sawdust were used to prepare polyaniline (PANI) nanocomposites, which were further explored for the supercapacitor electrode application.
This article is cited by 58 publications.
This article is cited by 58 publications.
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