Porous tin-based film deposited on copper foil for electrochemical reduction of carbon dioxide to formate

Lv, Weixin; Zhou, Jing; Kong, Fen‐Ying; Fang, Hai-Lin; Wang, Wei

doi:10.1016/j.ijhydene.2015.11.100

Cited by 58 publications

(35 citation statements)

References 27 publications

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“…In this mechanism, CO 2 reacts in a single electron transfer pre‐equilibrium step to form a radical 2, which is considered as an adsorbed CO 2 on the electrode surface. The rate‐limiting step is shown at the transformation of COO − into (COO − ) 2 through dimerization of another COO − on COO − and to establish a new bond between oxygen and carbon …”

Section: Intrinsic Factors Of Co2er On Cu‐based Electrocatalystsmentioning

confidence: 99%

Copper and Copper‐Based Bimetallic Catalysts for Carbon Dioxide Electroreduction

Birhanu

Tsai

Kahsay

et al. 2018

Adv Materials Inter

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Among many alternatives, CO2 electroreduction (CO2ER) is an emerging technology to alleviate its level in the atmosphere and simultaneously to produce essential products containing high energy density using various electrocatalysts. Cu‐based mono‐ and bimetallics are electrocatalysts of concerns in this work due to the material's abundance and versatility. Intrinsic factors affecting the CO2ER are first analyzed, whereby understanding and characterizing the surface features of electrocatalysts are addressed. An X‐ray absorption spectroscopy‐based methodology is discussed to determine electronic and structural properties of electrocatalyst surface which allows the prediction of reaction mechanism and establishing the correlation with reduction products. The selectivity and faradaic efficiency of products highly depend on the quality of surface modification. Preparation and modification of electrocatalyst surfaces through various techniques are critical to increase the number of activity sites and the corresponding site activity. Mechanisms of CO2ER are complicate and thus are discussed in accordance with main products of interests. The authors try to concisely compile the most interesting, recent, and reasonable ideas that are agreeable to experimental results. Finally, this review provides an outlook for designing better Cu and Cu‐based bimetallic catalysts to obtain selective products through CO2ER.

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Section: Intrinsic Factors Of Co2er On Cu‐based Electrocatalystsmentioning

confidence: 99%

Copper and Copper‐Based Bimetallic Catalysts for Carbon Dioxide Electroreduction

Birhanu

Tsai

Kahsay

et al. 2018

Adv Materials Inter

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“…Cu is a typical non‐noble electrocatalyst for CO 2 ER due to its low cost, high earth‐abundance and catalytic activity while Cu‐based bimetallic catalysts offer advantages of tuning selectivity and efficiency by varying the metal composition and microgeometric structures ,. Cu‐based bimetallic catalysts, such as Cu−Au, Cu−In, Cu‐Sn and Cu‐Pd have been investigated for a highly selective conversion of CO 2 to CO. Of these Cu‐based bimetallic catalysts, Cu−Sn catalysts are of particular interest primarily due to their synergistic effect, Sn's availability and low cost …”

Section: Figurementioning

confidence: 99%

Thermal‐Treatment‐Induced Cu−Sn Core/Shell Nanowire Array Catalysts for Highly Efficient CO₂ Electroreduction

Wang

et al. 2018

ChemElectroChem

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Hierarchical Cu−Sn core/shell nanowire arrays were built on 3‐dimensional macroporous Ni foams through a two‐step deposition, annealing, and electroreduction treatment. Cu was electroplated on Ni foam substrates and the sample was annealed at 500 °C followed by electroreduction, producing Cu nanowires of 150 nm diameter in arrays on the skeleton of Ni foams. Sn nanoparticles of 14–80 nm were then chemically deposited on Cu nanowires in clusters and a second annealing treatment at 200 °C followed by electroreduction re‐organized the clusters into a SnxO/Sn shell of 8 nm thickness. Creating such a Sn shell on Cu nanowires suppressed faradaic efficiencies for H2 evolution from 55.7 to 10.1 % and for HCOOH formation from 13.2 to 2.0 % and enhanced CO generation from 32.0 to 90.0 % at an applied potential of −0.8 V (vs. RHE). The faradaic efficiency for CO production remained almost constant at 90.0–91.4 % with total current densities of −13.2 to −19.3 mA cm−2 between −0.8 and −1.2 V (vs. RHE).

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“…Recently, a Sn-Cu electrode consisting of dendritic Cu core and a partially reduced oxides CuOx/SnOx shell also achieved excellent FE CO with a maximum of 94% due to the sparse Sn specie [18]. In contrast, some Sn-Cu electrodes generate formate as the dominant product [19][20][21][22][23]. For example, an electrode with spiky Cu@Sn nanocones over Cu foam exhibits an outstanding FE HCOOH of 90.4%.…”

Section: Introductionmentioning

confidence: 99%

Tuning Sn-Cu Catalysis for Electrochemical Reduction of CO2 on Partially Reduced Oxides SnOx-CuOx-Modified Cu Electrodes

Zhang

et al. 2019

Catalysts

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Copper-based bimetallic catalysts have been recently showing promising performance for the selective electrochemical reduction of CO2. In this work, we successfully fabricated the partially reduced oxides SnOx, CuOxmodified Cu foam electrode (A-Cu/SnO2) through an electrodeposition-annealing-electroreduction approach. Notably, in comparison with the control electrode (Cu/SnO2) without undergoing annealing step, A-Cu/SnO2 exhibits a significant enhancement in terms of CO2 reduction activity and CO selectivity. By investigating the effect of the amount of the electrodeposited SnO2, it is found that A-Cu/SnO2 electrodes present the characteristic Sn-Cu synergistic catalysis with a feature of dominant CO formation (CO faradaic efficiency, 70~75%), the least HCOOH formation (HCOOH faradaic efficiency, <5%) and the remarkable inhibition of hydrogen evolution reaction. In contrast, Cu/SnO2 electrodes exhibit a SnO2 coverage-dependent catalysis—a shift from CO selectivity to HCOOH selectivity with the increasing deposited SnO2 on Cu foam. The different catalytic performance between Cu/SnO2 and A-Cu/SnO2 might be attributed to the different content of Cu atoms in SnO2 layer, which may affect the density of Cu-Sn interface on the surface. Our work provides a facile annealing-electroreduction strategy to modify the surface composition for understanding the metal effect towards CO2 reduction activity and selectivity for bimetallic Cu-based electrocatalysts.

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Porous tin-based film deposited on copper foil for electrochemical reduction of carbon dioxide to formate

Cited by 58 publications

References 27 publications

Copper and Copper‐Based Bimetallic Catalysts for Carbon Dioxide Electroreduction

Copper and Copper‐Based Bimetallic Catalysts for Carbon Dioxide Electroreduction

Thermal‐Treatment‐Induced Cu−Sn Core/Shell Nanowire Array Catalysts for Highly Efficient CO₂ Electroreduction

Tuning Sn-Cu Catalysis for Electrochemical Reduction of CO2 on Partially Reduced Oxides SnOx-CuOx-Modified Cu Electrodes

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Porous tin-based film deposited on copper foil for electrochemical reduction of carbon dioxide to formate

Cited by 58 publications

References 27 publications

Copper and Copper‐Based Bimetallic Catalysts for Carbon Dioxide Electroreduction

Copper and Copper‐Based Bimetallic Catalysts for Carbon Dioxide Electroreduction

Thermal‐Treatment‐Induced Cu−Sn Core/Shell Nanowire Array Catalysts for Highly Efficient CO2 Electroreduction

Tuning Sn-Cu Catalysis for Electrochemical Reduction of CO2 on Partially Reduced Oxides SnOx-CuOx-Modified Cu Electrodes

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Thermal‐Treatment‐Induced Cu−Sn Core/Shell Nanowire Array Catalysts for Highly Efficient CO₂ Electroreduction