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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