Giant electric double-layer capacitance of heavily boron-doped diamond electrode

Takeshi Watanabe, Tomoko Shimizu, Yoshitaka Tateyama, Yousoo Kim, Maki Kawai, Yasuaki Einaga

Research output: Contribution to journalArticle

56 Citations (Scopus)

Abstract

The physical and electrochemical properties of boron-doped polycrystalline diamond electrodes, prepared with various B/C ratio, i.e., 0.1%, 0.5% (BDD-A), 1% (BDD-B), and 5% (BDD-C), were investigated. Electrochemical measurements of the heavily boron-doped films (BDD-C) showed giant electric double-layer capacitance and activity which is significantly larger than BDD-A and BDD-B as well as glassy carbon electrodes. However, interestingly, actual boron concentration of BDD-C was observed to be almost the same as that of BDD-B by secondary ion mass spectroscopy (SIMS) and glow discharge optical emission spectroscopy (GDOES) analysis. It is suggested that the large capacitance is due to a few sp2-bonded carbon impurities, which was observed only in BDD-C, although the amount of the sp2-bonded nondiamond species are very small. In the present work, the reason for the interesting electrochemical properties of heavily boron-doped diamond electrodes is discussed. Furthermore, dimensional stability of the electrodes was also confirmed by conducting harsh anodic treatment.

Original languageEnglish
Pages (from-to)772-777
Number of pages6
JournalDiamond and Related Materials
Volume19
Issue number7-9
DOIs
Publication statusPublished - 2010 Jul

Fingerprint

Diamond
Boron
Diamonds
boron
Capacitance
capacitance
diamonds
Electrodes
electrodes
Electrochemical properties
dimensional stability
Optical emission spectroscopy
Dimensional stability
glassy carbon
Glassy carbon
Glow discharges
optical emission spectroscopy
glow discharges
mass spectroscopy
Physical properties

Keywords

  • Boron-doped diamond
  • Electric double-layer capacitance
  • Electrochemistry
  • Heavily doping
  • sp-sp composite materials

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Physics and Astronomy(all)
  • Chemistry(all)

Cite this

Giant electric double-layer capacitance of heavily boron-doped diamond electrode. / Watanabe, Takeshi; Shimizu, Tomoko; Tateyama, Yoshitaka; Kim, Yousoo; Kawai, Maki; Einaga, Yasuaki.

In: Diamond and Related Materials, Vol. 19, No. 7-9, 07.2010, p. 772-777.

Research output: Contribution to journalArticle

Watanabe, Takeshi ; Shimizu, Tomoko ; Tateyama, Yoshitaka ; Kim, Yousoo ; Kawai, Maki ; Einaga, Yasuaki. / Giant electric double-layer capacitance of heavily boron-doped diamond electrode. In: Diamond and Related Materials. 2010 ; Vol. 19, No. 7-9. pp. 772-777.
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