Momordica Grosvenori Shell-Derived Porous Carbon Materials for High-Efficiency Symmetric Supercapacitors

Porous carbon materials derived from waste biomass have received broad interest in supercapacitor research due to their high specific surface area, good electrical conductivity, and excellent electrochemical performance. In this work, Momordica grosvenori shell-derived porous carbons (MGCs) were syn...

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Bibliographic Details
Published in:Nanomaterials (Basel, Switzerland) Switzerland), 2022-11, Vol.12 (23), p.4204
Main Authors: You, Yunmeng, Hua, Xianhao, Cui, Yuanying, Wu, Guiming, Qiu, Shujun, Xia, Yongpeng, Luo, Yumei, Xu, Fen, Sun, Lixian, Chu, Hailiang
Format: Article
Language:English
Subjects:
Aqueous solutions
Biomass
Capacitance
Capacitors
Carbon
Decomposition
Electrical conductivity
Electrical resistivity
Electrochemical analysis
Electrochemistry
electrode materials
Electrodes
Energy
Energy minerals
Energy storage
Force and energy
Fossil fuels
High temperature
KOH activation
Materials selection
Momordica
Momordica grosvenori
Nitrogen
porous carbon materials
Porous materials
Potassium hydroxide
Potassium hydroxides
Scanning electron microscopy
Spectrum analysis
Supercapacitors
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Summary:Porous carbon materials derived from waste biomass have received broad interest in supercapacitor research due to their high specific surface area, good electrical conductivity, and excellent electrochemical performance. In this work, Momordica grosvenori shell-derived porous carbons (MGCs) were synthesized by high-temperature carbonization and subsequent activation by potassium hydroxide (KOH). As a supercapacitor electrode, the optimized MGCs-2 sample exhibits superior electrochemical performance. For example, a high specific capacitance of 367 F∙g is achieved at 0.5 A∙g . Even at 20 A∙g , more than 260 F∙g can be retained. Moreover, it also reveals favorable cycling stability (more than 96% of capacitance retention after 10,000 cycles at 5 A∙g ). These results demonstrate that porous carbon materials derived from Momordica grosvenori shells are one of the most promising electrode candidate materials for practical use in the fields of electrochemical energy storage and conversion.
ISSN:2079-4991
2079-4991
DOI:10.3390/nano12234204