Copper Oxide Nitrogen-Rich Porous Carbon Network Boosts High-Performance Supercapacitors

Transition metal oxides with various valence states have high specific capacitance and have attracted much attention. However, the poor cycle stability caused by material agglomeration seriously limits the play of its high activity. Herein, we create a stress dispersion structure (CuxO composite por...

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Bibliographic Details
Published in:Metals (Basel ) 2023-05, Vol.13 (5), p.981
Main Authors: Li, Dan, Liu, Hanhao, Liu, Zijie, Huang, Que, Lu, Beihu, Wang, Yanzhong, Wang, Chao, Guo, Li
Format: Article
Language:English
Subjects:
Alternative energy sources
Capacitance
Capacitors
Carbon
carbon network
Composite materials
Copper
Copper oxides
Electrochemical analysis
Electrodes
Electrolytes
Energy resources
Energy storage
Glucose
Nitrogen
porous
Porous materials
Renewable resources
Stability
Supercapacitors
Transition metal oxides
Valence
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Summary:Transition metal oxides with various valence states have high specific capacitance and have attracted much attention. However, the poor cycle stability caused by material agglomeration seriously limits the play of its high activity. Herein, we create a stress dispersion structure (CuxO composite porous carbon net) by in situ lyophilization and one-step carbonization, effectively anchoring highly reactive copper oxides and highly conductive carbon networks combined with high nitrogen doping of 10.7%, to investigate their electrochemical performance in supercapacitors. Specifically, the specific capacitance of CuxO@NPC can be as high as 392 F/g (0.5 A/g) in the three-electrode system with 6 mol/L KOH as electrolyte. When applied to the two-electrode system, the cycle stability of the whole device can reach 97% after 10,000 cycles.
ISSN:2075-4701
2075-4701
DOI:10.3390/met13050981