Anomalous large capacitances of porous carbons based on protium adsorption

The capacitances of porous carbon anodes were determined using a Ni(OH) 2 cathode. We found that the capacitances were 300-700 F g −1 and above 3 times those of the carbon anodes prepared by electrical double layer formation, revealing the large capacitances based on protium H adsorption in the pres...

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2022-05, Vol.58 (36), p.5542-5545
Main Authors: Kojima, Yoshitsugu, Yamaguchi, Masakuni, Sawa, Haruo, Kikuchi, Katsuhide, Hiramitsu, Noriyuki, Kimbara, Masahiko, Nakanishi, Haruyuki, Takahashi, Yasuhiro
Format: Article
Language:English
Subjects:
Adsorption
Anodes
Carbon
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Summary:The capacitances of porous carbon anodes were determined using a Ni(OH) 2 cathode. We found that the capacitances were 300-700 F g −1 and above 3 times those of the carbon anodes prepared by electrical double layer formation, revealing the large capacitances based on protium H adsorption in the presence of highly concentrated KOH solution. The capacitances of porous carbon anodes determined using a Ni(OH) 2 cathode (PC1000, PC3000) were above 3 times the capacitances of the carbon anodes prepared by electrical double layer formation.
ISSN:1359-7345
1364-548X
DOI:10.1039/d2cc01338j