A Water‐Soluble Cu Complex as Molecular Catalyst for Electrocatalytic CO<sub>2</sub> Reduction on Graphene‐Based Electrodes

Wang, Jiong; Gan, Li‐Yong; Zhang, Qianwen; Reddu, Vikas; Peng, Yuecheng; Liu, Zhichao; Xia, Xing‐Hua; Wang, Cheng; Wang, Xin

doi:10.1002/aenm.201803151

Cited by 93 publications

(87 citation statements)

References 70 publications

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“…[103] The active sites consist of Cu(I) center in a distorted trigonal bipyramidal geometry, which allows the adsorption of CO 2 with η1-COO-like configuration to commence the catalysis, with a turnover frequency of ≈45 s −1 at −1 V versus RHE. [103] The active sites consist of Cu(I) center in a distorted trigonal bipyramidal geometry, which allows the adsorption of CO 2 with η1-COO-like configuration to commence the catalysis, with a turnover frequency of ≈45 s −1 at −1 V versus RHE.…”

Section: Other Metal-based Catalystsmentioning

confidence: 99%

Recent Trends, Benchmarking, and Challenges of Electrochemical Reduction of CO₂ by Molecular Catalysts

Elouarzaki

Kannan

Jose

et al. 2019

Advanced Energy Materials

160

102

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provides a promising alternative to hydrocarbon sources for petrochemical feedstock. Thanks to the electrochemical nature of the CO 2 conversion to fuels and chemicals, the electrical energy invested to convert CO 2 in the form of a chemical fuel can be stored and redistributed using established supply chains for future use. Additionally, the integration of renewable energy systems (green electricity) into the grid can potentially create a carbon neutral energy cycle, and when driven by solar energy, offers a completely renewable energy cycle or negative carbon technology. Converting CO 2 electrochemically into compounds with high energy densities, such as alcohols (methanol, ethanol), formates, and CO, represents a form of energy storage and is also adaptable to demand response or energy arbitrage technologies. [3][4][5][6][7] The recoverable energy density of the chemicals that can be converted from CO 2 is substantially higher than most battery technologies.Given CO 2 electroreduction's immense economic and environmental potential, it has been the subject of much research activity over the past decades. [8][9][10][11] One of the greatest challenges of reducing CO 2 in an electrochemical cell is overcoming the immense energy barrier required to do so; the single electron reduction of CO 2 to CO 2 −˙, a common step in many CO 2 reduction mechanisms, requires an applied potential of −1.97 V measured versus standard hydrogen electrode (SHE). To alleviate this problem, many catalytic cathodes have been developed to avoid this intermediate and to reroute the reduction mechanism through alternate pathways requiring much lower applied potentials (a necessity if CO 2 electroreduction is to be implemented at industrial scale). [12][13][14] However, despite the low potentials offered by catalytic electrodes, the cost of electrodes is not always viable when upscaled to industrial levels. [15,16] Therefore, recent research trends in electrocatalytic reduction of CO 2 have been shifting toward the development of molecular catalysts that can exist as either solutes in electrolytes or can be surface-confined on electrodes. [13,16] The tunable nature and electronic characteristics of molecular catalysts give access to a large variety of catalysts with high activity, selectivity, and durability, as well as their ability to be integrated into sophisticated nanoassemblies. [17][18][19] Thanks to the aforementioned proprieties, performing CO 2 reduction using molecularly defined compounds offer several advantages compared to classical solid-state counterparts. Molecular catalysts usually exhibit well-defined homogeneous and/or CO 2 reduction using molecular catalysts is a key area of study for achieving electrical-to-chemical energy storage and feedstock chemical synthesis. Compared to classical metallic solid-state catalysts, these molecular catalysts often result in high performance and selectivity, even under unfavorable aqueous environments. This review considers the recent state-of-the-art molecular catalysts for CO 2 electro...

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Section: Other Metal-based Catalystsmentioning

confidence: 99%

Recent Trends, Benchmarking, and Challenges of Electrochemical Reduction of CO₂ by Molecular Catalysts

Elouarzaki

Kannan

Jose

et al. 2019

Advanced Energy Materials

160

102

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“…The active sites of AD‐Sn/N‐C were believed to be Sn–N x , which was similar to other M–N x structure. In addition to the well‐developed M–N x moiety, the transition metal atoms coordinated with N, S, and Cl atoms are stimulated to serve as the active sites of carbon‐rich NPMSACs, such as M–N x S y moiety or M–N x Cl y moiety. For instance, the S and N atoms were introduced on the electrochemically exfoliated graphene by high‐temperature pyrolysis treatment of dicyandiamide‐ and thiophene‐based precursors, where the two precursors were assembled with transition metal salt at a molecular scale via hydrothermal reaction and further converted to N/S‐codoped Ni‐based SAC …”

Section: Carbon‐rich Npmsacs For Crr and Hermentioning

confidence: 99%

Carbon‐Rich Nonprecious Metal Single Atom Electrocatalysts for CO₂ Reduction and Hydrogen Evolution

et al. 2019

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Single atom catalysts (SACs) are considered as the emerging catalysts for boosting electricity‐driven CO2 reduction reaction (CRR) and hydrogen evolution reaction (HER). To replace the rare and expensive noble metal electrocatalysts, developing nonprecious metal SACs (NPMSACs) with superior electrocatalytic activity and stability is of paramount importance for achieving high efficiency in CRR and HER. Herein, a brief overview of recent achievements in the carbon‐rich NPMSACs for both CRR and HER is provided. The synthesis strategies and corresponding electrocatalytic performances of various carbon‐rich NPMSACs are discussed in the order of various metals (Ni, Co, Fe, Zn, and Sn for CRR, as well as Ni, Co, Fe, Mo, and W for HER), with a special attention paid to understand the structure–activity relationships. Finally, the remaining challenges and future perspectives for enhancing CRR and HER performance of NPMSACs are outlined.

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“…106,107 Because their molecular structures can be accurately tailored, high selectivity for the desirable products can be achieved on molecular catalysts for electrochemical CO 2 RR. 94,96,108,109 Recently, Wang et al 94 reported that a 1,10-phenanthroline-Cu complex on a mesostructured rGO matrix can be active and selective for CO 2 RR over HER in an aqueous solution. The phen-Cu complex, made of 1,10-phenanthroline ligands and Cu 2+ ions, was synthesized from an assembly of CuCl 2 and phen in a solvent mixture of CH3OH/CH2Cl2 and immobilized on the rGO substrate.…”

Section: Molecular Catalysts/rgo-based Electrocatalystsmentioning

confidence: 99%

Reduced graphene oxide‐based materials for electrochemical energy conversion reactions

et al. 2019

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There have been ever-growing demands to develop advanced electrocatalysts for renewable energy conversion over the past decade. As a promising platform for advanced electrocatalysts, reduced graphene oxide (rGO) has attracted substantial research interests in a variety of electrochemical energy conversion reactions. Its versatile utility is mainly attributed to unique physical and chemical properties, such as high specific surface area, tunable electronic structure, and the feasibility of structural modification and functionalization. Here, a comprehensive discussion is provided upon recent advances in the material preparation, characterization, and the catalytic activity of rGO-based electrocatalysts for various electrochemical energy conversion reactions (water splitting, CO 2 reduction reaction, N 2 reduction reaction, and O 2 reduction reaction). Major advantages of rGO and the related challenges for enhancing their catalytic performance are addressed. K E Y W O R D S

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A Water‐Soluble Cu Complex as Molecular Catalyst for Electrocatalytic CO₂ Reduction on Graphene‐Based Electrodes

Cited by 93 publications

References 70 publications

Recent Trends, Benchmarking, and Challenges of Electrochemical Reduction of CO₂ by Molecular Catalysts

Recent Trends, Benchmarking, and Challenges of Electrochemical Reduction of CO₂ by Molecular Catalysts

Carbon‐Rich Nonprecious Metal Single Atom Electrocatalysts for CO₂ Reduction and Hydrogen Evolution

Reduced graphene oxide‐based materials for electrochemical energy conversion reactions

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A Water‐Soluble Cu Complex as Molecular Catalyst for Electrocatalytic CO2 Reduction on Graphene‐Based Electrodes

Cited by 93 publications

References 70 publications

Recent Trends, Benchmarking, and Challenges of Electrochemical Reduction of CO2 by Molecular Catalysts

Recent Trends, Benchmarking, and Challenges of Electrochemical Reduction of CO2 by Molecular Catalysts

Carbon‐Rich Nonprecious Metal Single Atom Electrocatalysts for CO2 Reduction and Hydrogen Evolution

Reduced graphene oxide‐based materials for electrochemical energy conversion reactions

Contact Info

Product

Resources

About

A Water‐Soluble Cu Complex as Molecular Catalyst for Electrocatalytic CO₂ Reduction on Graphene‐Based Electrodes

Recent Trends, Benchmarking, and Challenges of Electrochemical Reduction of CO₂ by Molecular Catalysts

Recent Trends, Benchmarking, and Challenges of Electrochemical Reduction of CO₂ by Molecular Catalysts

Carbon‐Rich Nonprecious Metal Single Atom Electrocatalysts for CO₂ Reduction and Hydrogen Evolution