Micropore-Confined Organic Solid for a High-Rate and Durable Electrode
Source abstract
Abstract
Abstract The redox reactions of solid-state anthraquinone (AQ) confined within the micropores of activated carbon (AC) were investigated. A thin layer of AQ solid was adsorbed into the micropores of AC without inhibiting the formation of the electrical double layer. The AQ solid exhibited pseudocapacitive behavior and achieved 100% of its theoretical charge capacity (926 C g-AQ–1). Electrochemical impedance spectroscopy revealed that the capacitor response time of the AQ solid was shorter than those of the molecules dissolved in the electrolyte. This indicates that a direct charge transfer occurred from the carbon surface to the AQ solid. Regarding rechargeable aqueous air battery performance, the AQ solid demonstrated a discharge capacity of 257 mAh g-AQ–1 (99% of theoretical capacity) and a Coulombic efficiency of 99%. Both the cycling stability and rate performance of the AQ solid were superior compared with previously reported anode materials for rechargeable aqueous air batteries.
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Research context
OpenAlex topics: Advanced battery technologies research · Supercapacitor Materials and Fabrication · Advanced Battery Materials and Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
University of the Ryukyus , , , ,
Tohoku University , , 2-1-1 Katahira, Aoba-ku , , ,
Ibaraki University , , 4-12-1, Nakanarusawacho , , ,
Kyoto University , , Yoshida, Sakyo-ku, ,
Funding
Sumitomo Foundation · Japan Association for Chemical Innovation · Environmental Restoration and Conservation Agency · Yashima Environment Technology Foundation · Kondo Memorial Foundation · Yamada Science Foundation · Japan Society for the Promotion of Science · Ministry of Education, Culture, Sports, Science and Technology · Kato Foundation for Promotion of Science · Iketani Science and Technology Foundation · Shorai Foundation for Science and Technology · Tokyo Ohka Foundation for The Promotion of Science and Technology · Research Foundation for the Electrotechnology of Chubu · TEPCO Memorial Foundation · Amano Industry Technology Laboratory · Foundation for Interaction in Science and Technology · Kansai Research Foundation for Technology Promotion · Kenjiro Takayanagi Foundation · Sugiyama Houkoukai
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