2015
DOI: 10.1039/c4nr04417g
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Enhanced capacitance of composite TiO2nanotube/boron-doped diamond electrodes studied by impedance spectroscopy

Abstract: We report on novel composite nanostructures based on boron-doped diamond thin films grown on top of TiO2 nanotubes. The nanostructures made of BDD-modified titania nanotubes showed an increase in activity and performance when used as electrodes in electrochemical environments. The BDD thin films (∼200-500 nm) were deposited using microwave plasma assisted chemical vapor deposition (MW PA CVD) onto anodically fabricated TiO2 nanotube arrays. The influence of boron-doping level, methane admixture and growth time… Show more

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Cited by 58 publications
(36 citation statements)
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“…We suggest that the electrolyte ions can migrate into/out of pores in the electrode, with an extended charge-discharge time associated with the reduced scan rate, consistent with previous reports [39]. Table 1 [1,9,20,[40][41][42]. Fig.…”
Section: Fig 4heresupporting
confidence: 86%
See 1 more Smart Citation
“…We suggest that the electrolyte ions can migrate into/out of pores in the electrode, with an extended charge-discharge time associated with the reduced scan rate, consistent with previous reports [39]. Table 1 [1,9,20,[40][41][42]. Fig.…”
Section: Fig 4heresupporting
confidence: 86%
“…The results show that unlike carbon materials and other metal oxides, TiO 2 capacitors behave as conventional electrical double-layer capacitors via a non-faradic mechanism, and have very low specific capacitances [20]. Siuzdak et al developed a Ti/TiO 2 nanotube/BDD electrode, which provides a capacitance of 7.46 mF cm −2 at a scan rate of 10 mV s −1 [1]. Almeida et al…”
mentioning
confidence: 96%
“…Substrates were cleaned by sonication in acetone and 2-propanol for 5 min in each solvent. Next, the substrates were seeded by means of spin-coating in a nanodiamond suspension (crystallite size of 5-10 nm), and spun three times for 60 s at 4000 rpm [51]. The temperature of heating stage was kept at 700°C during the deposition process.…”
Section: Si/bdd Electrode Depositionmentioning
confidence: 99%
“…In 0.1 M NaNO 3 , the specific capacitance of 2.10, 4.79, and 7.46 mF cm , 5000 and 10,000, respectively. The substantial improvement of electrochemical performance and the excellent rate capability was explained with the synergistic effect of TiO 2 treatment in CH 4 :H 2 plasma and the high electrical conductivity of boron-doped diamond layers [50]. Recently, "diamond paper" showed in aqueous electrolyte a capacitance of 0.688 mF cm -2 per layer, or 0.645 F g -1 .…”
Section: Electrochemical Capacitorsmentioning
confidence: 98%