Effects of supporting electrolyte on the storage capacity of hybrid capacitors using graphitic and activated carbon

Yuji Yokoyama; Nobuaki Shimosaka; Hiroshige Matsumoto; Masaki Yoshio; Tatsumi Ishihara

doi:10.1149/1.2874522

Effects of supporting electrolyte on the storage capacity of hybrid capacitors using graphitic and activated carbon

Yuji Yokoyama, Nobuaki Shimosaka, Hiroshige Matsumoto, Masaki Yoshio, Tatsumi Ishihara

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

Abstract

Effects of anions and cations in the supporting electrolyte on the storage capacity of a hybrid capacitor were studied, and it was found that the large discharge capacity of 95 mAh/g was achieved by using triethylmethylammonium PF6 (TEMAPF6) as a supporting electrolyte. Storage mechanisms of positive and negative electrodes were also analyzed by using in situ X-ray diffraction measurement. The large capacity can be attributed to the electrochemical intercalation of PF 6- into graphite. It was found that the stability of the anion for positive electrodes and ionic size of the cation for negative electrodes are important for supporting salt in order to achieve larger capacities.

Original language	English
Pages (from-to)	A72-A75
Journal	Electrochemical and Solid-State Letters
Volume	11
Issue number	5
DOIs	https://doi.org/10.1149/1.2874522
Publication status	Published - Mar 24 2008

All Science Journal Classification (ASJC) codes

Chemical Engineering(all)
Materials Science(all)
Physical and Theoretical Chemistry
Electrochemistry
Electrical and Electronic Engineering

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10.1149/1.2874522

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AU - Yokoyama, Yuji

AU - Shimosaka, Nobuaki

AU - Matsumoto, Hiroshige

AU - Yoshio, Masaki

AU - Ishihara, Tatsumi

PY - 2008/3/24

Y1 - 2008/3/24

N2 - Effects of anions and cations in the supporting electrolyte on the storage capacity of a hybrid capacitor were studied, and it was found that the large discharge capacity of 95 mAh/g was achieved by using triethylmethylammonium PF6 (TEMAPF6) as a supporting electrolyte. Storage mechanisms of positive and negative electrodes were also analyzed by using in situ X-ray diffraction measurement. The large capacity can be attributed to the electrochemical intercalation of PF 6- into graphite. It was found that the stability of the anion for positive electrodes and ionic size of the cation for negative electrodes are important for supporting salt in order to achieve larger capacities.

AB - Effects of anions and cations in the supporting electrolyte on the storage capacity of a hybrid capacitor were studied, and it was found that the large discharge capacity of 95 mAh/g was achieved by using triethylmethylammonium PF6 (TEMAPF6) as a supporting electrolyte. Storage mechanisms of positive and negative electrodes were also analyzed by using in situ X-ray diffraction measurement. The large capacity can be attributed to the electrochemical intercalation of PF 6- into graphite. It was found that the stability of the anion for positive electrodes and ionic size of the cation for negative electrodes are important for supporting salt in order to achieve larger capacities.

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Effects of supporting electrolyte on the storage capacity of hybrid capacitors using graphitic and activated carbon

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