Near-infrared–driven decomposition of metal precursors yields amorphous electrocatalytic films

Salvatore, Danielle A.; Dettelbach, Kevan E.; Hudkins, Jesse R.; Berlinguette, Curtis P.

doi:10.1126/sciadv.1400215

Cited by 50 publications

(42 citation statements)

References 32 publications

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“…The electrodes were prepared by near infrared (NIR) irradiation of mixed‐metal precursor solutions spin‐cast on substrates followed by electrochemical reduction. This solution‐based method produces films with a relative metal content that closely matches those of the metal precursor solutions . The procedure affords ready access to an array of mixed‐metal electrocatalyst coatings with excellent control of metal stoichiometries.…”

Section: Co2→co With Electrocatalytic Alloysmentioning

confidence: 58%

“…This solution-basedm ethodp roduces films with ar elative metal content that closely matches those of the metal precursor solutions. [41] The procedurea ffords ready access to an array of mixed-metale lectrocatalyst coatings with excellent control of metal stoichiometries. XRD analyses of these CuÀIn films shows that alloyingi ss trongly correlated to the relative metal stoichiometry of the soluble precursors.…”

Section: Cuàin Alloysmentioning

confidence: 99%

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Electrocatalytic Alloys for CO₂ Reduction

et al. 2017

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Electrochemically reducing CO2 using renewable energy is a contemporary global challenge that will only be met with electrocatalysts capable of efficiently converting CO2 into fuels and chemicals with high selectivity. Although many different metals and morphologies have been tested for CO2 electrocatalysis over the last several decades, relatively limited attention has been committed to the study of alloys for this application. Alloying is a promising method to tailor the geometric and electric environments of active sites. The parameter space for discovering new alloys for CO2 electrocatalysis is particularly large because of the myriad products that can be formed during CO2 reduction. In this Minireview, mixed‐metal electrocatalyst compositions that have been evaluated for CO2 reduction are summarized. A distillation of the structure–property relationships gleaned from this survey are intended to help in the construction of guidelines for discovering new classes of alloys for the CO2 reduction reaction.

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Section: Co2→co With Electrocatalytic Alloysmentioning

confidence: 58%

Section: Cuàin Alloysmentioning

confidence: 99%

Electrocatalytic Alloys for CO₂ Reduction

et al. 2017

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“…To deposit Ni 2 FeO x , Ni 3 FeO x and NiFeO x co-catalysts on the Fe 2 O 3 film, a single-solution method was used following Berlinguette et al 29. for similar configuration.…”

Section: Methodsmentioning

confidence: 99%

Hetero-type dual photoanodes for unbiased solar water splitting with extended light harvesting

et al. 2016

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Metal oxide semiconductors are promising photoelectrode materials for solar water splitting due to their robustness in aqueous solutions and low cost. Yet, their solar-to-hydrogen conversion efficiencies are still not high enough for practical applications. Here we present a strategy to enhance the efficiency of metal oxides, hetero-type dual photoelectrodes, in which two photoanodes of different bandgaps are connected in parallel for extended light harvesting. Thus, a photoelectrochemical device made of modified BiVO4 and α-Fe2O3 as dual photoanodes utilizes visible light up to 610 nm for water splitting, and shows stable photocurrents of 7.0±0.2 mA cm−2 at 1.23 VRHE under 1 sun irradiation. A tandem cell composed with the dual photoanodes–silicon solar cell demonstrates unbiased water splitting efficiency of 7.7%. These results and concept represent a significant step forward en route to the goal of >10% efficiency required for practical solar hydrogen production.

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“…[23] We report herein that the reduction of films formed by near-infrared driven decomposition (NIRDD) affords the facile isolation of alloys that act as effective CO 2 reduction electrocatalysts.T he irradiation of mixed-metal precursor solutions spin-cast on substrates with near infrared (NIR) radiation induces the formation of metal oxide films with ar elative metal content that closely matches that of the precursor solution. [24] Theelectrochemical reduction of these films affords alloys with relative metal stoichiometries that generally match the oxide films they are derived from. The efficacyofthis method is demonstrated herein by testing the catalytic conversion of CO 2 into CO for aseries of 21 different indium-containing films with different concentrations of secondary metals (M) iron, cobalt, nickel, copper,a nd zinc ( Figure 1).…”

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confidence: 99%

High‐Throughput Synthesis of Mixed‐Metal Electrocatalysts for CO₂ Reduction

et al. 2017

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The utilization of CO as a feedstock requires fundamental breakthroughs in catalyst design. The efficiencies and activities of pure metal electrodes towards the CO reduction reaction are established, but the corresponding data on mixed-metal systems are not as well developed. In this study we show that the near-infrared driven decomposition (NIRDD) of solution-deposited films of metal salts and subsequent electrochemical reduction offers the unique opportunity to form an array of mixed-metal electrocatalyst coatings with excellent control of the metal stoichiometries. This synthetic method enabled us to develop an empirical structure-property correlation to help inform the development of optimized CO catalyst compositions.

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Near-infrared–driven decomposition of metal precursors yields amorphous electrocatalytic films

Abstract: A method for creating electrocatalyst films extends the scope of usable substrates to non-conducting and three-dimensional electrodes.

Cited by 50 publications

References 32 publications

Electrocatalytic Alloys for CO₂ Reduction

Electrocatalytic Alloys for CO₂ Reduction

Hetero-type dual photoanodes for unbiased solar water splitting with extended light harvesting

High‐Throughput Synthesis of Mixed‐Metal Electrocatalysts for CO₂ Reduction

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Near-infrared–driven decomposition of metal precursors yields amorphous electrocatalytic films

Abstract: A method for creating electrocatalyst films extends the scope of usable substrates to non-conducting and three-dimensional electrodes.

Cited by 50 publications

References 32 publications

Electrocatalytic Alloys for CO2 Reduction

Electrocatalytic Alloys for CO2 Reduction

Hetero-type dual photoanodes for unbiased solar water splitting with extended light harvesting

High‐Throughput Synthesis of Mixed‐Metal Electrocatalysts for CO2 Reduction

Contact Info

Product

Resources

About

Electrocatalytic Alloys for CO₂ Reduction

Electrocatalytic Alloys for CO₂ Reduction

High‐Throughput Synthesis of Mixed‐Metal Electrocatalysts for CO₂ Reduction