Electrochemical conversion of CO2 to syngas with a wide range of CO/H2 ratio over Ni/Fe binary single-atom catalysts

Zhang, Meng; Hu, Zheng; Gu, Lin; Zhang, Qinghua; Zhang, Linghui; Song, Qian; Zhou, Wei; Hu, Shengsun

doi:10.1007/s12274-020-2988-1

Cited by 54 publications

(35 citation statements)

References 43 publications

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“…Up to now, enormous efforts have been made to prepared the high-efficiency CO 2 RR electrocatalysts. [253][254][255] Usually, later transition metals (Ag, or Au) are the typically active for CO 2 to CO. Cu is productive for generation of (oxygenated) hydrocarbons, including CO, [256] methane, [257] ethylene, [258,259] acetate, [260] or ethanol, [261] on the basis of CO 2 RR. Thus, according the requirement of value-added chemicals, various electrocatalysts toward CO 2 RR have been fabricated to construct to explore the relationships between reaction mechanisms and surface structure.…”

Section: Co 2 Rrmentioning

confidence: 99%

Rational Design of Single‐Atom Site Electrocatalysts: From Theoretical Understandings to Practical Applications

2021

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inflicting the foreign potential. Up to now, the state-of-the-art electrocatalysts mainly depend on the noble-metal-based catalysts, such as platinum (Pt), Palladium (Pd), ruthenium (Ru), Iridium (Ir), rhodium (Rh), and gold (Au). [1,2] While the high cost and low storage of noble-metals compel the sluggish pullulation of electrocatalytic applications. [3] The avenues to overcome this bottleneck issue mainly include two aspects. One strategy is to seek a promising substituendum with superior catalytic activity to replace the traditional noble-metal catalysts. Based on this strategy, enormous breakthroughs have been reported via modulating the macroscopic physical and chemical properties, such as shape, structure, size, crystal face, and composition. [4][5][6][7][8][9][10][11][12][13] Another strategy is to minimize the usage of noble-metals without weakening electrocatalytic performance. In comparison with the conventional bulk catalysts, reducing the usage of noble metal via downsizing the particles to clusters or even the single atoms can trigger the immeasurably electrocatalytic performance based on the site isolation effect and size effect, as illustrated in Figure 1. [14][15][16] The catalytic reactions, involving the heterogeneous and homogeneous, usually occur on the surface of catalysts, of which the serviceable active sites are restricted to small fraction of surface atoms. Thus, isolating the active sites individually to prepare the single-atom site electrocatalysts (SACs) can greatly elevate the atomic utilization. From the microscopic view, although the atomically dispersed metal atoms could present their maximized utilization, the high surface free energy of single atoms suffer from the migration and aggregation. [17,18] Anchoring the single atom on the suitable supports is the key prerequisite for realizing the efficient catalysis. Some compounds, such as metals, metal oxides, metal chlorides/carbides/ nitrides/sulfides, layered double hydroxides (LDHs), and other modified carbon materials, are used as the supports to stabilize the single atoms. [19][20][21] In addition, enormous preparation strategies of stable and high-efficiency electrocatalysts are also presented, such as the impregnation and coprecipitation strategy, spatial confinement strategy, coordination site construction strategy, defect/vacant design strategy, electrochemical method, atomic layer deposition (ALD) method, synthesizing SACs from bulk metals or metal oxide powers, ball-milling method, and so on.Atomically dispersed metal-based electrocatalysts have attracted increasing attention due to their nearly 100% atomic utilization and excellent catalytic performance. However, current fundamental comprehension and summaries to reveal the underlying relationship between single-atom site electrocatalysts (SACs) and corresponding catalytic application are rarely reported. Herein, the fundamental understandings and intrinsic mechanisms underlying SACs and corresponding electrocatalytic applications are systemically summarized. Different ...

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Section: Co 2 Rrmentioning

confidence: 99%

Rational Design of Single‐Atom Site Electrocatalysts: From Theoretical Understandings to Practical Applications

2021

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“…In addition to homonuclear DMS catalysts mentioned above, the fabrication of heteronuclear DMS catalysts is also conductive to enhance the ECR performance. Up to now, heteronuclear DMS Ni/Co, 151 Zn/Co, 152 Ni/Zn, 153 Ni/Cu, 154 NiSn, 155 Ni/Fe, 148,156,157 Fe/Cu, 158 and Zn/Ln 159 catalysts have been demonstrated to be effective ECR. For example, Zhao et al 148 synthesized a catalyst with Ni–Fe DMS anchored on NC for ECR.…”

Section: Strategies For Optimization Of Ldm Supported Sacs For Ecrmentioning

confidence: 99%

Low‐dimensional material supported single‐atom catalysts for electrochemical CO₂ reduction

et al. 2022

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Converting CO2 emissions to valuable carbonaceous chemicals/fuels under mild conditions provides a sustainable way to maintain carbon balance and alleviate the energy shortage. Low‐dimensional material (LDM) supported single‐atom catalysts (SACs) have been attracted significant attention for electrochemical CO2 reduction reaction (ECR) in recent years. This is mainly because integrating the single‐atoms and LDMs can inherit the advantages of themselves and the synergy effects between them are potential to enhance the ECR performance. In this review, we summarized the strategies for synthesizing LDM supported SACs for ECR, and different LDM supported SACs for ECR have been briefly introduced. Moreover, some optimization strategies for LDM supported SACs towards CO2 electroreduction are highlighted. At the end of this review, the perspectives and challenges of LDM supported SACs for ECR are provided.

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“…Daiyan and co-workers [161] also adjusted the CO/H 2 ratio (1:2 to 1:1 to 3:2) by modulating active sites that consisted of nanoparticles of Co encapsulated in graphitic carbon shell on the one hand, to reduce CO 2 to CO, and on the other hand, the hydrogen evolution reaction is carried out by the remains of simple atoms of Co coordinated with four N atoms that decorate the material on the surface. Zhang and co-workers [162] synthesized a dual catalyst with single Ni atoms and single Fe atoms that were selective towards reducing CO 2 and HER, respectively. Adjusting the ratio between Ni and Fe it was possible to adjust the CO/H 2 ratio in a wide window of 0.14-10.86 to −0.86 V vs. RHE.…”

Section: Smas-n-other Carbon Materialsmentioning

confidence: 99%

From CO2 to Value-Added Products: A Review about Carbon-Based Materials for Electro-Chemical CO2 Conversion

et al. 2021

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The global warming and the dangerous climate change arising from the massive emission of CO2 from the burning of fossil fuels have motivated the search for alternative clean and sustainable energy sources. However, the industrial development and population necessities make the decoupling of economic growth from fossil fuels unimaginable and, consequently, the capture and conversion of CO2 to fuels seems to be, nowadays, one of the most promising and attractive solutions in a world with high energy demand. In this respect, the electrochemical CO2 conversion using renewable electricity provides a promising solution. However, faradaic efficiency of common electro-catalysts is low, and therefore, the design of highly selective, energy-efficient, and cost-effective electrocatalysts is critical. Carbon-based materials present some advantages such as relatively low cost and renewability, excellent electrical conductivity, and tunable textural and chemical surface, which show them as competitive materials for the electro-reduction of CO2. In this review, an overview of the recent progress of carbon-based electro-catalysts in the conversion of CO2 to valuable products is presented, focusing on the role of the different carbon properties, which provides a useful understanding for the materials design progress in this field. Development opportunities and challenges in the field are also summarized.

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Electrochemical conversion of CO2 to syngas with a wide range of CO/H2 ratio over Ni/Fe binary single-atom catalysts

Cited by 54 publications

References 43 publications

Rational Design of Single‐Atom Site Electrocatalysts: From Theoretical Understandings to Practical Applications

Rational Design of Single‐Atom Site Electrocatalysts: From Theoretical Understandings to Practical Applications

Low‐dimensional material supported single‐atom catalysts for electrochemical CO₂ reduction

From CO2 to Value-Added Products: A Review about Carbon-Based Materials for Electro-Chemical CO2 Conversion

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Electrochemical conversion of CO2 to syngas with a wide range of CO/H2 ratio over Ni/Fe binary single-atom catalysts

Cited by 54 publications

References 43 publications

Rational Design of Single‐Atom Site Electrocatalysts: From Theoretical Understandings to Practical Applications

Rational Design of Single‐Atom Site Electrocatalysts: From Theoretical Understandings to Practical Applications

Low‐dimensional material supported single‐atom catalysts for electrochemical CO2 reduction

From CO2 to Value-Added Products: A Review about Carbon-Based Materials for Electro-Chemical CO2 Conversion

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Low‐dimensional material supported single‐atom catalysts for electrochemical CO₂ reduction