Electrochemical oscillations of a new type in an H2O2+H2SO4∣Pt-electrode system, appearing by addition of small amounts of halide ions

In order to reduce production cost of making H2, one of the key points was to reduce Pt loading in Pt/C catalytic electrode. In our study, a new type of Pt/C membrane electrodes, PtCuLaOx/C heterogeneous structure, in which with developing different flow of O2, on the surface of carbonaceous substrates were manufactured by Ion Beam Sputtering (IBS) technology. These membrane electrodes were treated by annealing in vacuum furnace, and by different time in different concentration H2SO4 solution. The hydrogen evolution properties of these electrodes were tested by tri-electrode system, and were calculated results of their exchange current density (i0), decomposition voltage (Ed) and active specific surface area (ESA). It was found that PtCuLaOx heterogeneous membrane electrodes with Pt loading less than 0.041mg•cm-2 (the electrode area) undergone treatment, whose Ed, i0 and ESA was -0.223(V vs SCE), 4.562mA•cm-2 and 46.2811m2•g-1 respectively in balanced condition.

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Hydrogen Evolution Properties of Carbon Supported PtCu-LaOX Composite Multi-Layer Membrane Electrode Materials

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.347-353.3260 ◽

2011 ◽

Vol 347-353 ◽

pp. 3260-3263

Author(s):

Bin Yang ◽

Tao Xu ◽

Neng Huang

Keyword(s):

Hydrogen Evolution ◽

Electrode Materials ◽

Ion Beam ◽

Electrode System ◽

Membrane Electrode ◽

Membrane Electrodes ◽

Ion Beam Sputtering ◽

Beam Sputtering ◽

Layer Membrane ◽

New Type

In order to reduce production cost of making H2, one of the key points was to reduce Pt loading in Pt/C catalytic electrode. In our study, a new type of Pt/C membrane electrodes -- PtCu/C (abbr. P), PtCuLaOx/C (abbr. PL), PtCu-LaOx/C (abbr. P-L), LaOx-PtCu/C (abbr. L-P), LaOx-PtCu-LaOx/C (abbr. L-P-L) and PtCu-LaOx-PtCu/C (abbr. P-L-P) composite multi-layer membrane electrodes -- would be raised, in which with developing different membranouslayer form and different La content homogeneously dispersed on the surface of carbonaceous substrates was manufactured by Ion Beam Sputtering (IBS) technology. The hydrogen evolution polarization curves of these electrodes were tested by tri-electrode system, and were calculated results of their exchange current density (i0) and decomposition voltage (Ed). It was found that PtCu-LaOxcomposite multi-layer membrane with Pt loading less than 0.05mg/cm2(the electrode area) whose Ed and i0 was -0.227(V vs SCE) and 4.717mA/cm2respectively in balanced condition.

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Mechanism of Potential Oscillation (Named Oscillation K) Induced By pH Increase at Electrode Surface in “H2O2-H2so4-Pt Electrode” System

ECS Meeting Abstracts ◽

10.1149/ma2020-02683670mtgabs ◽

2020 ◽

Vol MA2020-02 (68) ◽

pp. 3670-3670

Author(s):

Haruki Okada ◽

Yoshiharu Mukouyama

Keyword(s):

Electrode Surface ◽

Electrode System ◽

Potential Oscillation ◽

Pt Electrode ◽

Ph Increase

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The application of the relaxation method to the study of Fe3+, Fe2+, H2SO4/Pt electrode system

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19901478 ◽

1990 ◽

Vol 55 (6) ◽

pp. 1478-1484

Author(s):

Adolf Kisza ◽

Jerzy Każmierczak ◽

Elżbieta Miciór

Keyword(s):

Charge Transfer ◽

Transfer Reaction ◽

Relaxation Method ◽

Electrode Reaction ◽

Electrode System ◽

Experimental Results ◽

Charge Transfer Reaction ◽

Pt Electrode ◽

Relaxation Theory

The paper presents the application of the relaxation theory of electrode reaction in a diffusional system. The theoretical equations derived are tested by the experimental results of a simple charge transfer reaction Fe3+ + e = Fe2+ on Pt electrode in 1M H2SO4.

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Modulation of the Oscillation Period for an Electrochemical Oscillation in an “H2O2-Acid-Pt Electrode” System by Deposition of a Small Amount of Metal Atoms

Chemistry Letters ◽

10.1246/cl.1998.977 ◽

1998 ◽

Vol 27 (10) ◽

pp. 977-978 ◽

Cited By ~ 2

Author(s):

Shuji Nakanishi ◽

Hayato Hommura ◽

Yoshiharu Mukouyama ◽

Toshihiko Matsuda ◽

Yoshihiro Nakato

Keyword(s):

Oscillation Period ◽

Electrode System ◽

Pt Electrode ◽

Metal Atoms ◽

Electrochemical Oscillation

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Influence on Hydrogen Evolution Properties of Carbon Supported PtCu-LaOx Membrane Electrode by Aftertreatment

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.393-395.153 ◽

2011 ◽

Vol 393-395 ◽

pp. 153-156

Author(s):

Bin Yang ◽

Neng Huang

Keyword(s):

Hydrogen Evolution ◽

Ion Beam ◽

Electrode System ◽

Membrane Electrode ◽

Vacuum Furnace ◽

Membrane Electrodes ◽

Ion Beam Sputtering ◽

Key Points ◽

Beam Sputtering ◽

New Type

In order to reduce production cost of making H2, one of the key points was to reduce Pt loading in Pt/C catalytic electrode. In our study, a new type of Pt/C membrane electrodes, PtCu-LaOx/C composite structure, was manufactured by Ion Beam Sputtering (IBS) technology. These membrane electrodes were treated by different annealing temperature in vacuum furnace, and by different time in different concentration H2SO4 solution. The hydrogen evolution properties of these electrodes were tested by tri-electrode system, and were calculated results of their exchange current density (i0), decomposition voltage (Ed) and active specific surface area (ESA). It was found that PtCu-LaOx composite membrane electrodes with Pt loading less than 0.045mg•cm-2 (the electrode area) undergone treatment, whose Ed, i0 and ESA was -0.264(V vs SCE), 4.111mA•cm2 and 75.8926m2•g-1 respectively in balanced condition.

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