Ion‐Enhanced Conversion of CO<sub>2</sub> into Formate on Porous Dendritic Bismuth Electrodes with High Efficiency and Durability

Piao, Guangxia; Yoon, Soo-Han; Han, Dong Suk; Park, Hyunwoong

doi:10.1002/cssc.201902581

Cited by 51 publications

(31 citation statements)

References 35 publications

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“…They also used a GaInP/GaInAs/Ge costly triple-junction solar cell, but earthabundant materials for the electrocatalysts, differently from Cheng et al 209 Zho et al 193 reported a STF of about 10% to formate, with current density of about 9 mA•cm −2 also using a costly InGaP/GaAs PV component. A STF of about 8.5% to formate with current density about 10 mA•cm −2 was reported by Pia et al 214 also using a triple-junction PV cell, but based on less-costly Si. However, a costly component such as IrO2 was used as electrocatalyst.…”

Section: The Case Of Co2mentioning

confidence: 65%

Current density in solar fuel technologies

Romano

D’Angelo

Perathoner

2021

Energy Environ. Sci.

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Section: The Case Of Co2mentioning

confidence: 65%

Current density in solar fuel technologies

Romano

D’Angelo

Perathoner

2021

Energy Environ. Sci.

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“…In general, bismuth‐based catalyst can be prepared in three different shapes, as shown in Figure 8 [168] . Several experimental work by Piao et al [169] . reported that Bi electrodes are highly porous and possess high electrocatalytic activity.…”

Section: Types Of Catalysts Used For Formate/formic Acid Productionmentioning

confidence: 99%

Electroreduction of Carbon Dioxide into Formate: A Comprehensive Review

et al. 2021

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Carbon dioxide conversion into useful products has been gaining considerable attention as a global‐warming‐mitigation technique. The electrochemical conversion of CO2 into high‐value chemicals involves the utilization of electrical energy in the presence of an effective catalyst. The process products depend on the number of transferred electrons during the reaction and the characteristics of the electrode. Recently, electrodes coupled with active catalysts have been used to convert CO2 into valuable products including formic acid, hydrocarbons, and syngas. This review offers an overview of the recent literature on the electrochemical conversion of CO2 to valuable products, with an emphasis on the production of formate/formic acid. In addition, it compares the main features of electrochemical conversion to other techniques and summarizes their key advantages. It also provides future perspective for research and development, such as the need for novel and selective catalysts to obtain high conversion and product yield with low energy consumption.

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“…6.4% Sriramagiri et al (2017) [124] PV-EC a-Si Pt Ag 1.5 CO/90% 0.08% a) 0.07% a),b) Deng et al (2018) [125] PV-EC c-Si IrO 2 Bi 10 HCOOH/95% n.r. 8.5% Piao et al (2019) [126] PV-EC c-Si IrO 2 In n.r. HCOOH/66% n.r.…”

Section: Pv Componentmentioning

confidence: 99%

Solar‐Driven Electrochemical CO₂ Reduction with Heterogeneous Catalysts

Creissen

Fontecave

2020

Advanced Energy Materials

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solubility of CO 2 in aqueous electrolyte solution (≈30 × 10 −3 m), which leads to diffusion-limited current densities. Device engineering has addressed this issue through the development of flow cell configurations that overcome mass transport limitations of conventional H-cells, thus improving attainable current densities. [4][5][6][7] Another complication resides in the kinetic requirement for multiple electron and proton transfers, which results in high energy barriers for certain products, requiring efficient catalysts for high current densities. The similarity in thermodynamic potentials for different CO 2 R products (Table 1) means that product selectivity is a problem. Additionally, proton reduction is kinetically fast in aqueous conditions leading to competitive hydrogen generation. CO 2 R electrocatalysts have been developed to address this broad range of products that can be generated and the concomitant lack of selectivity.Although molecular electrocatalysts have demonstrated high selectivity for CO 2 R to C 1 products, [8] they currently suffer from short-term stability. [9] The most effective catalysts are those based on metallic or semiconducting materialsheterogeneous catalysts. Metallic catalysts in particular have shown high selectivity for: CO using Ag, Zn, and Au; formate using Sn, In, and Pb; and a range of multi-carbon products using Cu catalysts in EC systems. [10][11][12][13][14][15] Knowledge of how nanoscale properties and morphological effects influence specificity, has enabled systems to achieve high selectivity with competitive production rates. [13] For example, identifying key morphological attributes and alterations under operating conditions, [16][17][18][19][20][21][22] observing trends in size and facet-dependent selectivity, [23][24][25][26][27] and evaluating the impact of structuration on the local chemical environment, [28][29][30] all contribute to increased understanding of structure-activity relationships in CO 2 R. The type of catalyst employed therefore plays a large role in overall performance.EC CO 2 R devices can theoretically be coupled with any renewable electricity source, however, the direct integration of sunlight-driven processes is a desirable route to product formation. [31,32] An integrated approach avoids the need for grid access in remote locations, enabling direct on-site utilization, and reduces energy losses from current conversion. The additional costs in combining grid electricity with conventional electrolyzers has driven research toward the incorporation of increasingly affordable PV components. An additional benefit is the dual functionality of these devices that allows them to retain their The simultaneous mitigation of CO 2 emissions and direct generation of value-added chemicals has motivated research in solar-driven electrochemical CO 2 reduction. Here, devices incorporating heterogeneous catalysts that operate under bias-free aqueous conditions are categorized and compared, encompassing photoelectrochemical (PEC), photovoltaic-electrochemical ...

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Ion‐Enhanced Conversion of CO₂ into Formate on Porous Dendritic Bismuth Electrodes with High Efficiency and Durability

Cited by 51 publications

References 35 publications

Current density in solar fuel technologies

Current density in solar fuel technologies

Electroreduction of Carbon Dioxide into Formate: A Comprehensive Review

Solar‐Driven Electrochemical CO₂ Reduction with Heterogeneous Catalysts

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Ion‐Enhanced Conversion of CO2 into Formate on Porous Dendritic Bismuth Electrodes with High Efficiency and Durability

Cited by 51 publications

References 35 publications

Current density in solar fuel technologies

Current density in solar fuel technologies

Electroreduction of Carbon Dioxide into Formate: A Comprehensive Review

Solar‐Driven Electrochemical CO2 Reduction with Heterogeneous Catalysts

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Product

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Ion‐Enhanced Conversion of CO₂ into Formate on Porous Dendritic Bismuth Electrodes with High Efficiency and Durability

Solar‐Driven Electrochemical CO₂ Reduction with Heterogeneous Catalysts