Effect of Substrate Size on the Electrochemical Properties of Boron-doped Diamond Powders for Screen-printed Diamond Electrode

Kondo, Takeshi; Nakajima, Keito; Osasa, Takahiro; Kotsugai, Akihiro; Shitanda, Isao; Hoshi, Yoshinao; Itagaki, Masayuki; Aikawa, Tatsuo; Tojo, Takeo; Yuasa, Makoto

doi:10.1246/cl.180672

Cited by 7 publications

(19 citation statements)

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“…A larger specific surface area was expected as the powder diameter decreased, leading to an EDLC with larger capacitance. We reported the use of BDDP as an electrode material for printed electrochemical sensors 22–25 and polymer electrolyte fuel cell cathode catalyst support 26 . In these reports, the diameter of the BDDP was 300 nm or larger.…”

Section: Introductionmentioning

confidence: 99%

Boron-doped Nanodiamond as an Electrode Material for Aqueous Electric Double-layer Capacitors

Miyashita

Kondo

Sugai

et al. 2019

Sci Rep

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Herein, a conductive boron-doped nanodiamond (BDND) particle is prepared as an electrode material for an aqueous electric double-layer capacitor with high power and energy densities. The BDND is obtained by depositing a boron-doped diamond (BDD) on a nanodiamond particle substrate with a primary particle size of 4.7 nm via microwave plasma-assisted chemical vapor deposition, followed by heat treatment in air. The BDND comprises BDD and sp2 carbon components, and exhibits a conductivity above 10−2 S cm−1 and a specific surface area of 650 m2 g−1. Cyclic voltammetry measurements recorded in 1 M H2SO4 at a BDND electrode in a two-electrode system shows a capacitance of 15.1 F g−1 and a wide potential window (cell voltage) of 1.8 V, which is much larger than that obtained at an activated carbon electrode, i.e., 0.8 V. Furthermore, the cell voltage of the BDND electrode reaches 2.8 V when using saturated NaClO4 as electrolyte. The energy and power densities per unit weight of the BDND for charging–discharging in 1 M H2SO4 at the BDND electrode cell are 10 Wh kg−1 and 104 W kg−1, respectively, and the energy and power densities per unit volume of the BDND layer are 3–4 mWh cm−3 and 10 W cm−3, respectively. Therefore, the BDND is a promising candidate for the development of a compact aqueous EDLC device with high energy and power densities.

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Section: Introductionmentioning

confidence: 99%

Boron-doped Nanodiamond as an Electrode Material for Aqueous Electric Double-layer Capacitors

Miyashita

Kondo

Sugai

et al. 2019

Sci Rep

Self Cite

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show abstract

“…However, when comparing the magnified images of the surfaces of DP-300 and (l) BDDP-350. 18,23 BDDP-350, BDDP-350 was found to have a rough surface consisting of particles with a size of 250 nm while the surface of DP-300 was relatively smooth (Figure 2k and 2l). 18 This result suggests that nanocrystalline BDD was deposited on the surface of the DP substrate by CVD.…”

Section: Preparation Of Bddp/bdndmentioning

confidence: 98%

“…18,23 BDDP-350, BDDP-350 was found to have a rough surface consisting of particles with a size of 250 nm while the surface of DP-300 was relatively smooth (Figure 2k and 2l). 18 This result suggests that nanocrystalline BDD was deposited on the surface of the DP substrate by CVD. Figures 3a3j shows the particle size distribution of DP and BDDP obtained by the dynamic light scattering (DLS) method.…”

Section: Preparation Of Bddp/bdndmentioning

confidence: 98%

“…22 Figure 2 shows scanning electron microscopy (SEM) images of BDDP with various particle sizes. 18,23 Comparing SEM images of DP substrates with particle sizes of 105, 301, 436, 1647, and 2650 nm (denoted as DP-100, -300, -450, -1600, and -2600, respectively) and the corresponding BDDPs (denoted as BDDP-150, -350, -650, -2000, and -3500, respectively), no obvious changes in particle size and shape were observed before and after BDD layer deposition by CVD. However, when comparing the magnified images of the surfaces of DP-300 and (l) BDDP-350.…”

Section: Preparation Of Bddp/bdndmentioning

confidence: 99%

“…As the size of the DP substrate can be widely selected from at least several tens of nanometers to several tens of micrometers, BDDP of the desired particle size can be easily obtained. 18 A nanodiamond (ND) particle with a primary particle size of 5 nm or less is manufactured by the detonation method and is also commercially available. 19 By using this material as a substrate for BDD, it is expected that conductive diamond particles having a high specific surface area can be produced.…”

Section: Introductionmentioning

confidence: 99%

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