Upgrading CO2 into acetate on Bi2O3@carbon felt integrated electrode via coupling electrocatalysis with microbial synthesis

Liu, Xiaojing; Zhang, Kang; Sun, Yidan; Zhang, Shukang; Qiu, Zhenyu; Song, Tian‐shun; Xie, Jingjing; Wu, Yuping; Chen, Yuhui

doi:10.1002/sus2.117

Cited by 21 publications

(10 citation statements)

References 61 publications

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“…Because our research was based on a zero-gap reactor, we received a much higher current density (153 mA/cm 2 ) and the major products from CO2RR are CO and C 2 H 4 . There are more previous interesting reports using bimetallic electrocatalysts for CO2RR. − Their results are listed in Table to compare with that of the present research. In these reports, H-cell and flow cell were used as electrolyzer for CO2RR; the current density is relatively small.…”

Section: Resultssupporting

confidence: 60%

Copper-Nanowires Incorporated with Silver-Nanoparticles for Catalytic CO₂ Reduction in Alkaline Zero Gap Electrolyzer

Jiang,

Parameshwaran,

Boltersdorf

et al. 2023

ACS Appl. Energy Mater.

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Carbon capture and utilization play important roles in reducing climate change. A promising way is to directly convert CO2 to valuable fuels through electrochemical reaction using renewable energy. In the present research, a thin layer of a nanocatalyst network on a gas diffusion layer was prepared by incorporating Ag-nanoparticles into Cu-nanowires, which was used as the cathode electrode for CO2 reduction reaction (CO2RR). The catalyst was evaluated with an alkaline membrane electrolyte assembly (MEA), which is called a zero gap electrolyzer. A high-performing catalyst of Cu–Ag was identified, containing 37% Cu and 63% Ag (Cu@Ag-63). The Faradaic and energy efficiencies of CO2RR vary with operational temperature ranging from 20 to 60 °C at a cell voltage of 3.0 V, with the Faradaic and energy efficiencies decreasing from 89 to 52% and from 38 to 23%, respectively. The highest catalytic current density of 153 mA/cm2 for total CO2RR products was observed at 60 °C. The catalytic stability of an MEA with Cu@Ag-63 as the cathode catalyst was evaluated by chronopotentiometric operation at 30 °C and periodically measuring the gas products with a gas chromatograph. 94% Faradaic and 38% energy efficiencies of CO2RR were obtained during continuous long-term operation at 80 mA/cm2 and 3.0 V. Halting the CO2RR reaction for a period of time and then resuming operation of the reactor greatly enhanced C2H4 production and lowered CO production. The Faradaic efficiency of C2H4 increased from 33 to 60%; but the Faradaic efficiency of CO decreased from 60 to 22%. The internal chemical variations during resting time are unclear at the cathode surface, which is probably relevant to nanosized Cu particles’ oxidation and reduction again after resuming the applied negative potential, leading to the catalyst/electrolyte interface being renewed. The fresh catalyst/electrolyte interface greatly facilitated C–C coupling.

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Section: Resultssupporting

confidence: 60%

Copper-Nanowires Incorporated with Silver-Nanoparticles for Catalytic CO₂ Reduction in Alkaline Zero Gap Electrolyzer

Jiang,

Parameshwaran,

Boltersdorf

et al. 2023

ACS Appl. Energy Mater.

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“…1,2 However, the CO 2 reduction reaction (CO 2 RR) suffers from sluggish kinetics associated with the slow activation of inert CO 2 molecules and an unfavorable competition with the hydrogen evolution reaction (HER). [3][4][5][6] To date, noble metals are the most efficient and durable CO 2 RR catalysts, yet their high cost and scarcity hinder their large-scale commercial deployment. [7][8][9] Therefore, the development of high-performance and cost-effective catalyst is mandatory for the CO 2 RR to have a real social, economic, and environmental impact.…”

Section: Introductionmentioning

confidence: 99%

“…4 Cl sites. The NiN 4 Cl─ClNC electrocatalyst exhibited superior CO 2 RR electrocatalytic activity, featuring a high FE CO of 98.7% at a high j CO of 12.4 mA cm −2 at −0.7 V versus RHE in H-cell.…”

mentioning

confidence: 99%

Stabilizing highly active atomically dispersed NiN₄Cl sites by Cl‐doping for CO₂ electroreduction

Li,

Qi,

Wang

et al. 2023

SusMat

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Nickel‐nitrogen‐carbon single‐atom catalysts have attracted widespread interest for CO2 electroreduction but they suffer from poor stability. Herein, we report on the preparation of Cl‐ and N‐doped porous carbon nanosheets with atomically dispersed NiN4Cl active sites (NiN4Cl‐ClNC) through a molten‐salt‐assisted pyrolysis strategy. The optimized NiN4Cl‐ClNC catalyst delivers exceptional CO2 conversion activity with outstanding stability for over 220 h at −0.7 V versus RHE and a high CO Faradaic efficiency of 98.7% at a CO partial current density of 12.4 mA cm‒2. Moreover, NiN4Cl‐ClNC displays a remarkable CO partial current density of approximately 349.4 mA cm−2 in flow‐cell, meeting the requirements of industrial applications. Operando attenuated total reflectance surface‐enhanced infrared absorption spectroscopy and density functional theory calculations are used to understand the outstanding activity and stability. Results reveal that the introduced axial Ni‐Cl bond on the Ni center and Cl─C bond on the carbon support synergetically induce electronic delocalization, which not only stabilizes Ni against leaching but also facilitates the formation of the COOH* intermediate that is found to be the rate‐determining step.

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“…have shown excellent selectivity for HCOOH in the reduction of CO 2 due to high hydrogen evolution overpotential. [12][13][14][15] Compared with these electrocatalysts, there is tremendous attention to Sn-based materials with their special advantages such as low cost, hypotoxicity, and environmental friendliness, which provide great potential for the reduction of CO 2 to HCOOH. [16][17][18][19][20] While the further applications of Sn-based electrodes in CO 2 RR are hindered by their undesirable selectivity and poor stability.…”

Section: Introductionmentioning

confidence: 99%

Boron Dopant Modulated Electron Localization of Tin Oxide for Efficient Electrochemical CO₂ Reduction to Formate

Zhong

Yang

Liang

et al. 2023

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Sn‐based electrocatalysts have great economic potential in the reduction of CO2 to HCOOH, while they still suffer from low current density, dissatisfactory selectivity, and poor stability. Inspired by electronic modification engineering, boron‐doped SnO2 nanospheres (B‐SnO2) are successfully synthesized to achieve high‐efficiency CO2 reduction reaction (CO2RR). It is found that the introduction of boron dopants can increase the number of active sites and facilitate the formation of the electron‐rich Sn sites in its structure, thus enhancing the activation of CO2 molecules and reducing the energy barrier of *OCHO intermediates on the SnO2 surface. Thus, the B‐doped SnO2 electrocatalyst exhibits a remarkable FEHCOOH above 90% within a broad potential window of −0.7 to −1.3 V versus reversible hydrogen electrode (RHE) (600 mV) and obtains the maximum value of 95.1% (the partial current density of HCOOH is 42.35 mA cm−2) at −1 V versus RHE. In conclusion, this work provides a novel strategy for optimizing the intrinsic properties of electrocatalysts for CO2RR by the method of tuning the electronic structure.

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Upgrading CO₂ into acetate on Bi₂O₃@carbon felt integrated electrode via coupling electrocatalysis with microbial synthesis

Cited by 21 publications

References 61 publications

Copper-Nanowires Incorporated with Silver-Nanoparticles for Catalytic CO₂ Reduction in Alkaline Zero Gap Electrolyzer

Copper-Nanowires Incorporated with Silver-Nanoparticles for Catalytic CO₂ Reduction in Alkaline Zero Gap Electrolyzer

Stabilizing highly active atomically dispersed NiN₄Cl sites by Cl‐doping for CO₂ electroreduction

Boron Dopant Modulated Electron Localization of Tin Oxide for Efficient Electrochemical CO₂ Reduction to Formate

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Upgrading CO2 into acetate on Bi2O3@carbon felt integrated electrode via coupling electrocatalysis with microbial synthesis

Cited by 21 publications

References 61 publications

Copper-Nanowires Incorporated with Silver-Nanoparticles for Catalytic CO2 Reduction in Alkaline Zero Gap Electrolyzer

Copper-Nanowires Incorporated with Silver-Nanoparticles for Catalytic CO2 Reduction in Alkaline Zero Gap Electrolyzer

Stabilizing highly active atomically dispersed NiN4Cl sites by Cl‐doping for CO2 electroreduction

Boron Dopant Modulated Electron Localization of Tin Oxide for Efficient Electrochemical CO2 Reduction to Formate

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Product

Resources

About

Upgrading CO₂ into acetate on Bi₂O₃@carbon felt integrated electrode via coupling electrocatalysis with microbial synthesis

Copper-Nanowires Incorporated with Silver-Nanoparticles for Catalytic CO₂ Reduction in Alkaline Zero Gap Electrolyzer

Copper-Nanowires Incorporated with Silver-Nanoparticles for Catalytic CO₂ Reduction in Alkaline Zero Gap Electrolyzer

Stabilizing highly active atomically dispersed NiN₄Cl sites by Cl‐doping for CO₂ electroreduction

Boron Dopant Modulated Electron Localization of Tin Oxide for Efficient Electrochemical CO₂ Reduction to Formate