Development of Fe-Co-W Alloys as Cathode Materials for Fuel Cell Application

Ramesh, L.; Sheshadri, B.S.; Mayanna, S. M.

doi:10.1080/00202967.1998.11871204

Cited by 9 publications

(5 citation statements)

References 11 publications

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“…When the alloy contained more tungsten, more phases were seen. Full width at half maximum (FWHM) values of these deposits revealed higher crystallanity with particle diameter ≈ 8 nm (WO [2][3][4] : Pt = 10: 1 in the bath solution) obtained by Debye-Scherrer equation [19]. The appearances of oxides of platinum and W are due to the formation of air formed films on the deposit.…”

Section: Discussionmentioning

confidence: 99%

“…(Fig. 6C) in WO [2][3][4] : H 2 PtCl 6 molar ratio of 5:1. On reversing the scan a cathodic peak was seen at -250 mV.…”

Section: Electrochemical Behavior Of H 2 Ptclmentioning

confidence: 99%

“…Tungsten forms hard alloys / composites with iron group metals, retaining some of its unique functional properties even at elevated temperatures [1,2]. Electroplated Pt/WO 3 coatings are used as effective anode material for methanol fuel cell [3,4].…”

Section: Introductionmentioning

confidence: 99%

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Study In The Electrochemical Behavior Of Wo3-Pt Coating: A Cyclic Voltammetric Approach

ShafiaHoor¹

2012

IOSRJAC

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Section: Discussionmentioning

confidence: 99%

“…(Fig. 6C) in WO [2][3][4] : H 2 PtCl 6 molar ratio of 5:1. On reversing the scan a cathodic peak was seen at -250 mV.…”

Section: Electrochemical Behavior Of H 2 Ptclmentioning

confidence: 99%

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Study In The Electrochemical Behavior Of Wo3-Pt Coating: A Cyclic Voltammetric Approach

ShafiaHoor¹

2012

IOSRJAC

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“…This work is motivated in part by the known enhancement of hardness and corrosion resistance by adding W to Co, as Co–W alloys (Hamid, 2003; Tsyntsaru et al, 2008, 2009; Weston et al, 2009), and with Co-W-Fe alloys (Capel et al, 2003). Recently, Fe–Co–W cathodes have been shown to be promising candidates as electrocatalyst for the hydrogen evolution reaction (HER) for alkaline electrolyzers (Ramesh et al, 1998). To address and determine the metal deposition reaction rates a rotating cylinder Hull (RCH) was employed that has a current distribution along its length to electrodeposit thin films over a large current density range under controlled hydrodynamic conditions.…”

Section: Introductionmentioning

confidence: 99%

Coupled Electrodeposition of Fe–Co–W Alloys: Thin Films and Nanowires

2019

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The electrodeposition of Fe–Co–W alloys was examined using a rotating cylinder Hull (RCH) cell and conditions were determined to create nanowires. The metal ion reduction mechanism was a combination of induced and anomalous codeposition, with water reduction as a gas evolving side reaction, rending deposition into recesses a challenge. In thin film deposition, under kinetic control, the addition of Fe ions into the electrolyte, greatly reduced the Co partial current density, and thus it's content in the deposit. The change of Co partial current density was attributed to an anomalous codeposition behavior, but it had a minimal effect in changing the W wt% in the deposit, despite the expected inducing characteristic of Fe when codeposited with tungsten. Deposition conditions were determined to electrodeposit Fe–Co–W nanowires having similar concentration as the thin films. Nanowires were electrodeposited into polycarbonate membranes under pulsed current at room temperature.

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“…It is difficult to electrodeposit these alloys from aqueous solution because of the co-deposition of hydrogen and tungsten is reluctant metal to deposit. Attempts have been made to coat these alloys by electroplating technique using tailor made plating bath solutions [2,3].…”

Section: Introductionmentioning

confidence: 99%

Studies on electrodeposition of Fe–W alloys for fuel cell applications

Tharamani

Beera

Jayaram

et al. 2006

Applied Surface Science

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Electrodeposition of Fe-W alloy has been carried out from acidic triammonium citrate (TAC) complex bath solution. The deposit is characterised by XRD, SEM, EDAX, XPS and polarization techniques. The alloys are amorphous and become partially crystalline on heat treatment. The composition (Fe/W) of elements in the coating and their oxidation states vary from the surface to the bulk of the material. The coatings exhibit as novel electrode material with low over voltage and good corrosion resistance for anodic oxidation of methanol in H 2 SO 4 medium. The anodic peak current, a measure of oxidation reaction rate is considerably high on Fe-W alloy when compared to pure Fe and also the relative surface area of Fe by alloying it with W found to increase by 1200-fold. #

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Development of Fe-Co-W Alloys as Cathode Materials for Fuel Cell Application

Cited by 9 publications

References 11 publications

Study In The Electrochemical Behavior Of Wo3-Pt Coating: A Cyclic Voltammetric Approach

Study In The Electrochemical Behavior Of Wo3-Pt Coating: A Cyclic Voltammetric Approach

Coupled Electrodeposition of Fe–Co–W Alloys: Thin Films and Nanowires

Studies on electrodeposition of Fe–W alloys for fuel cell applications

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