Ta Compound Film as New Anode Material for Polymer Electrolyte Water Electrolysis

Yamauchi, Kyosuke; Matsuzawa, Koichi; Ota, Ken Ichiro; Mitsushima, Shigenori

doi:10.1149/1.3684788

Cited by 3 publications

(3 citation statements)

References 3 publications

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“…However, it does not have significant activity for the OER 9 . In the term of Ta oxide, it has enough stability in the acidic media 10 but it had also poor activity for the OER [11][12][13] . To enhance the OER activity of Ta oxide-based electrocatalyst, we focused and investigated the Mn addition because it is reported 14 that the γ-MnO2 has significant OER activity and it also has high stability in solution at a pH of 2.…”

Section: Introductionmentioning

confidence: 99%

(Digital Presentation) Oxygen Evolution Reaction on Non-Precious Metal Oxide-Based Electrocatalysts With and Without Low Potential Scan in Acidic Solution

Matsuzawa¹,

Kohara²,

Hirayama³

et al. 2022

ECS Trans.

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In order to develop non-platinum group metals anode electrocatalyst for the proton exchange membrane water electrolysis, the catalytic activity of Mn added Ta and Mo oxide-based electrocatalyst with and without low potential scan for the oxygen evolution reaction (OER) have been investigated. Both Mn added Ta and Mo oxide-based electrocatalyst without low potential scan (Mn-TaOx (E low = 1.2 V) and Mn-MoOx (E low = 1.2 V)) had much higher OER activity than that with low potential scan ((Mn-TaOx (E low = 0.05 V) and Mn-MoOx (E low = 0.05 V)) because the charge transfer resistance of both Mn-TaOx and Mn-MoOx (E low = 1.2 V) were drastically smaller than that of Mn-TaOx and Mn-MoOx (E low = 0.05 V). From SEM and XPS spectra, containing amount of Mn has maintained after electrochemical measurement in both bulk and surface of Mn-TaOx and Mn-MoOx without low potential scan (E low = 1.2 V) while containing amount of Mn was reduced after electrochemical measurement in both bulk and surface of Mn-TaOx and Mn-MoOx with low potential scan (E low = 0.05 V).

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Section: Introductionmentioning

confidence: 99%

(Digital Presentation) Oxygen Evolution Reaction on Non-Precious Metal Oxide-Based Electrocatalysts With and Without Low Potential Scan in Acidic Solution

Matsuzawa¹,

Kohara²,

Hirayama³

et al. 2022

ECS Trans.

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“…However, it does not have significant activity for the OER 6 . In the term of Ta oxide, it has enough stability in the acidic media 7 but it had also poor activity for the OER [8][9][10] . In this study, we have prepared not Ta oxide but Ta oxide-based electrocatalyst with and without addition and investigated its catalytic activity for the OER in acidic solution.…”

Section: Introductionmentioning

confidence: 99%

The Impact of Mn addition on Ta Oxide-Based Electrocatalysts for Oxygen Evolution Reaction in Acid

Matsuzawa¹,

Hirayama²,

Kohara³

et al. 2021

ECS Trans.

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In order to develop non-platinum group metals anode electrocatalyst for the proton exchange membrane water electrolysis, the catalytic activity of Ta oxide-based electrocatalyst with and without Mn addition for the oxygen evolution reaction (OER) have been investigated. The Ta oxide-based electrocatalyst with Mn addition (Mn-TaOx) has greatly increased current density than that without any addition. From XPS spectra, the Mn-TaOx after electrochemical measurement did not detect the peak identified Mn oxides while the sample before electrochemical measurement showed clearly the peak that identified Mn oxides. From the slow scan voltammogram of Mn-TaOx, the redox peak of Mn species was detected. Since the electric charge of redox peak and the OER current density has linear relation in Mn-TaOx, the Mn content which is below the detection limit of XPS is affected on the enhancement of OER activity at Ta oxide-based electrocatalyst.

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“…Since the Ta oxide-based compounds which have the catalytic activity for oxygen reduction reaction in an acidic solution 3 , we have tried to apply them to electrocatalyst for oxygen evolution reaction (OER). However, the catalytic activity of Ta oxide-based compounds for the OER was very low when it was prepared by reactive sputtering with TaC target 4 .…”

Section: Introductionmentioning

confidence: 99%

Oxygen Evolution Reaction for Ta Compound Films Prepared by Reaction Sputtering with Resintering

Matsuzawa,

Goto,

Takahashi

et al. 2013

Meet. Abstr.

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Ta Compound Film as New Anode Material for Polymer Electrolyte Water Electrolysis

Cited by 3 publications

References 3 publications

(Digital Presentation) Oxygen Evolution Reaction on Non-Precious Metal Oxide-Based Electrocatalysts With and Without Low Potential Scan in Acidic Solution

(Digital Presentation) Oxygen Evolution Reaction on Non-Precious Metal Oxide-Based Electrocatalysts With and Without Low Potential Scan in Acidic Solution

The Impact of Mn addition on Ta Oxide-Based Electrocatalysts for Oxygen Evolution Reaction in Acid

Oxygen Evolution Reaction for Ta Compound Films Prepared by Reaction Sputtering with Resintering

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