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 language | English |
|---|---|
| Pages (from-to) | 772-777 |
| Number of pages | 6 |
| Journal | Diamond and Related Materials |
| Volume | 19 |
| Issue number | 7-9 |
| DOIs | |
| Publication status | Published - 2010 Jul |
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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 journal › Article
}
TY - JOUR
T1 - Giant electric double-layer capacitance of heavily boron-doped diamond electrode
AU - Watanabe, Takeshi
AU - Shimizu, Tomoko
AU - Tateyama, Yoshitaka
AU - Kim, Yousoo
AU - Kawai, Maki
AU - Einaga, Yasuaki
PY - 2010/7
Y1 - 2010/7
N2 - 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.
AB - 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.
KW - Boron-doped diamond
KW - Electric double-layer capacitance
KW - Electrochemistry
KW - Heavily doping
KW - sp-sp composite materials
UR - http://www.scopus.com/inward/record.url?scp=77955229437&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77955229437&partnerID=8YFLogxK
U2 - 10.1016/j.diamond.2010.02.022
DO - 10.1016/j.diamond.2010.02.022
M3 - Article
VL - 19
SP - 772
EP - 777
JO - Diamond and Related Materials
JF - Diamond and Related Materials
SN - 0925-9635
IS - 7-9
ER -