Electrocatalysis of Hydrogen Evolution: Progress in Cathode Activation

Trasatti, Sergio

doi:10.1002/9783527616763.ch1

Cited by 50 publications

(48 citation statements)

References 374 publications

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“…In the process of chlor-alkali electrolysis for chlorine production in the membrane cells [154][155][156], an ion-exchange membrane separates the anode and the cathode compartments and gaseous hydrogen is produced in the cathode compartment from 30 to 32 mass % caustic soda solution at a typical operating temperature of 90 C. The efficiency of the cathodes is an important issue in this process, since the overvoltage for the HER in the cathode compartment contributes significantly to the overall power consumption. The efficiency of the cathodes is a result of combination of certain activity and stability at current densities (0.3-0.6 A cm À2 ) normally used in industrial applications.…”

Section: Service Life Testmentioning

confidence: 99%

Electrodeposition and Characterization of Alloys and Composite Materials

Jović¹,

Lačnjevac²,

Jović³

2014

Electrodeposition and Surface Finishing

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Section: Service Life Testmentioning

confidence: 99%

Electrodeposition and Characterization of Alloys and Composite Materials

Jović¹,

Lačnjevac²,

Jović³

2014

Electrodeposition and Surface Finishing

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“…The ability to operate the photoelectrolysis device at high pH could relax many of the device design constraints, by enabling the use of highly active, non-noble metal electrocatalysts in alkaline media, [19][20][21] and by enabling the use of semiconductors that are not stable under acidic conditions. Several promising polymeric materials have recently been developed for application in an anionic fuel cell.…”

Section: Broader Contextmentioning

confidence: 99%

Electrical conductivity, ionic conductivity, optical absorption, and gas separation properties of ionically conductive polymer membranes embedded with Si microwire arrays

Spurgeon

Walter

Zhou

et al. 2011

Energy Environ. Sci.

109

131

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The optical absorption, ionic conductivity, electronic conductivity, and gas separation properties have been evaluated for flexible composite films of ionically conductive polymers that contain partially embedded arrays of ordered, crystalline, p-type Si microwires. The cation exchange ionomer Nafion, and a recently developed anion exchange ionomer, poly(arylene ether sulfone) that contains quaternary ammonium groups (QAPSF), produced composite microwire array/ionomer membrane films that were suitable for operation in acidic or alkaline media, respectively. The ionic conductivity of the Si wire array/ Nafion composite films in 2.0 M H 2 SO 4 (aq) was 71 mS cm À1, and the conductivity of the Si wire array/ QAPSF composite films in 2.0 M KOH(aq) was 6.4 mS cm À1. Both values were comparable to the conductivities observed for films of these ionomers that did not contain embedded Si wire arrays. Two Si wire array/Nafion membranes were electrically connected in series, using a conducting polymer, to produce a trilayer, multifunctional membrane that exhibited an ionic conductivity in 2.0 M H 2 SO 4 (aq) of 57 mS cm À1 and an ohmic electrical contact, with an areal resistance of $0.30 U cm 2 , between the two physically separate embedded Si wire arrays. All of the wire array/ionomer composite membranes showed low rates of hydrogen crossover. Optical measurements indicated very low absorption (<3%) in the ionexchange polymers but high light absorption (up to 80%) by the wire arrays even at normal incidence, attesting to the suitability of such multifunctional membranes for application in solar fuels production.

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“…All Ni 40 mesh substrates were only shortly etched in 1:3 mixture of H 2 O:HNO 3 and washed with distilled water before the deposition.…”

Section: Nisn Alloy Coatingsmentioning

confidence: 99%

“…One of the most important industrial processes is chlor-alkali electrolysis for chlorine production in the zero-gap membrane cells [1][2][3]. In this process an ion-exchange membrane separates the anode and the cathode compartments and gaseous hydrogen is produced in cathode compartment from 30-32 mass % caustic soda solution at a typical operating temperature of 90 o C. Taking into account high efficiency for chlorine evolution due to low overvoltage on the DSA in the anodic compartment [1,2], the efficiency of the cathodes is an important issue in this process, since the overpotential for the HER in the cathode compartment contributes significantly to the overall power consumption [3].…”

Section: Introductionmentioning

confidence: 99%

“…In this process an ion-exchange membrane separates the anode and the cathode compartments and gaseous hydrogen is produced in cathode compartment from 30-32 mass % caustic soda solution at a typical operating temperature of 90 o C. Taking into account high efficiency for chlorine evolution due to low overvoltage on the DSA in the anodic compartment [1,2], the efficiency of the cathodes is an important issue in this process, since the overpotential for the HER in the cathode compartment contributes significantly to the overall power consumption [3]. The efficiency of cathodes is a result of combination of certain activity and stability at the high current densities (3-6 kA m -2 ) used in industrial applications.…”

Section: Introductionmentioning

confidence: 99%

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