Promising High-Performance Supercapacitor Electrode Materials from MnO2 Nanosheets@Bamboo Leaf Carbon
Author(s) -
Jing Yu,
Minglong Li,
Xiaodong Wang,
Zhenglong Yang
Publication year - 2020
Publication title -
acs omega
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 0.779
H-Index - 40
ISSN - 2470-1343
DOI - 10.1021/acsomega.0c02169
Subject(s) - supercapacitor , materials science , bamboo , raman spectroscopy , electrolyte , x ray photoelectron spectroscopy , electrochemistry , capacitance , electrode , carbon fibers , composite material , chemical engineering , aqueous solution , hydrothermal circulation , composite number , chemistry , physics , optics , engineering
MnO 2 @bamboo leaf (BL) carbon composites have been prepared by a hydrothermal method, wherein, the BL porous carbon structure was based on BLs. The MnO 2 @BL composites were characterized by SEM, TEM, XRD, Raman, XPS, and TGA. The electrochemical properties of the composites were investigated in a three-electrode system using 1 M Na 2 SO 4 aqueous solution as an asymmetric supercapacitor electrolyte. Electrochemical measurements showed that the MnO 2 @BL composites can be applied in asymmetric supercapacitors and exhibited a good cycling stability with a capacitance retention ratio of 85.3% after 5000 cycles (at 0.5 A g -1 ). The MnO 2 @BL composites were promising materials for application in supercapacitors.
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