Carbon-carbon asymmetric aqueous capacitor by pseudocapacitive positive and stable negative electrodes

Khanin Nueangnoraj, Ramiro Ruiz-Rosas, Hirotomo Nishihara, Soshi Shiraishi, Emilia Morallón, Diego Cazorla-Amorós, Takashi Kyotani

    Research output: Contribution to journalLetterpeer-review

    17 Citations (Scopus)

    Abstract

    An asymmetric aqueous capacitor was constructed by employing zeolite-templated carbon (ZTC) as a pseudocapacitive positive electrode and KOH-activated carbon as a stable negative electrode. The asymmetric capacitor can be operated with the working voltage of 1.4 V, and exhibits an energy density that is comparable to those of conventional capacitors utilizing organic electrolytes, thanks to the large pseudocapacitance of ZTC. Despite relatively thick electrode (0.2 mm) configuration, the asymmetric capacitor could be well operated under a current density of 500 mA g-1.

    Original languageEnglish
    Pages (from-to)792-794
    Number of pages3
    JournalCarbon
    Volume67
    DOIs
    Publication statusPublished - 2014

    ASJC Scopus subject areas

    • Chemistry(all)
    • Materials Science(all)

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