Electroreduction of CO₂: Advances in the Continuous Production of Formic Acid and Formate

ACS Energy Letters, Journal Year: 2023, Volume and Issue: 8(4), P. 1992 - 2024

Published: March 30, 2023

The study of the electrochemical CO2 reduction to obtain formate (HCOO–) or formic acid (HCOOH) is receiving much attention as a promising technology. Since continuous–mode operation has become necessary for practical implementation reduction, recent years have seen rapid increase in number research approaches focusing on this aspect. This Focus Review provides unified discussion available studies continuous electroreduction HCOO–/HCOOH, considering different important features process design. Moreover, paper quantitatively assesses performance that involve reactors converting HCOOH/HCOO–, comparing relevant typically used figures merit, including energy consumption. Although some trade-offs already been achieved, simultaneous optimization all merit remains challenge. Finally, concluding remarks highlight detected trends and discuss aspects will be tackled by future field.

Language: Английский

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Efficient Conversion of Biomass to Formic Acid Coupled with Low Energy Consumption Hydrogen Production from Water Electrolysis

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(30)

Published: May 26, 2023

The development of a new electrolytic water hydrogen production coupling system is the key to realize efficient and low-cost promote its practical application. Herein, green electrocatalytic biomass formic acid (FA) coupled has been developed. In such system, carbohydrates as glucose are oxidized FA using polyoxometalates (POMs) redox anolyte, while H2 evolved continuously at cathode. Among them, yield high 62.5 %, only liquid product. Furthermore, requires 1.22 V drive current density 50 mA cm-2 , Faraday efficiency close 100 %. Its electrical consumption 2.9 kWh Nm-3 (H2 ), which 69 % that traditional water. This work opens up promising direction for with conversion.

Language: Английский

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Nanoscale Engineering of P‐Block Metal‐Based Catalysts Toward Industrial‐Scale Electrochemical Reduction of CO₂

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(34)

Published: July 27, 2023

Abstract The efficient conversion of CO 2 to value‐added products represents one the most attractive solutions mitigate climate change and tackle associated environmental issues. In particular, electrochemical reduction fuels chemicals has garnered tremendous interest over last decades. Among all from reduction, formic acid is considered economically vital products. P‐block metals (especially Bi, Sn, In, Pb) have been extensively investigated recognized as catalytic materials for electroreduction formate. Despite remarkable progress, future implementation this technology at industrial‐scale hinges on ability solve remaining roadblocks. review, current research status, challenges, prospects p‐block metal‐based catalysts primarily formate are comprehensively reviewed. rational design nanostructure engineering these metal optimization their performances discussed in detail. Subsequently, recent progress development state‐of‐the‐art operando characterization techniques together with advanced cells uncover intrinsic catalysis mechanism discussed. Lastly, a perspective directions including tackling critical challenges realize its early industrial presented.

Language: Английский

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Frontiers in high entropy alloys and high entropy functional materials

Rare Metals, Journal Year: 2024, Volume and Issue: 43(10), P. 4639 - 4776

Published: Aug. 28, 2024

Language: Английский

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Concentrated Formic Acid from CO₂ Electrolysis for Directly Driving Fuel Cell

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(13)

Published: Feb. 2, 2024

Abstract The production of formic acid via electrochemical CO 2 reduction may serve as a key link for the carbon cycle in economy, yet its practical feasibility is largely limited by quantity and concentration product. Here we demonstrate continuous at M an industrial‐level current densities (i.e., 200 mA cm −2 ) 300 h on membrane electrode assembly using scalable lattice‐distorted bismuth catalysts. optimized catalysts also enable Faradaic efficiency formate 94.2 % highest partial density 1.16 A , reaching rate 21.7 mmol −1 . To assess practicality this system, perform comprehensive techno‐economic analysis life assessment, showing that our approach can potentially substitute conventional methyl hydrolysis industrial production. Furthermore, resultant serves direct fuel air‐breathing cells, boasting power 55 mW exceptional thermal 20.1 %.

Language: Английский

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Machine learning assisted prediction of solar to liquid fuel production: a case study

Process Safety and Environmental Protection, Journal Year: 2024, Volume and Issue: 184, P. 1119 - 1130

Published: Feb. 23, 2024

In this era of heightened environmental awareness, the global community faces critical challenge climate change. Renewable energy (RE) emerges as a vital contender to mitigate warming and meet increasing needs. Nonetheless, fluctuating nature renewable sources underscores necessity for efficient conversion storage strategies. This pioneering research focuses on transformation solar (SE) into liquid fuels, with specific emphasis formic acid (FA) case study, done in Binh Thuan, Vietnam. The paper unveils technology designed convert acid, ensuring its stability at ambient conditions. It involves detailed simulations quantify daily monthly electricity output from photovoltaic (PV) systems corresponding mass producible through energy. simulation dual-axis tracking system PV panels, intended maximize capture, is one project's illustrations. elevation azimuth angles, which are two essential parameters, extensively studied present research. project makes use machine learning algorithms field predictive modeling, specifically Artificial Neural Networks (ANN) Support Vector Machines (SVM). These tools play crucial role modeling power production while accounting variety influencing factors. A comparative study shows that SVM outperforms ANN accurately predicting FA generation, both major goals. model tool can be used forecast these goals based certain causal variables. Overall, it observed maximum produced 2-axis tracker was achieved February 2355 kW resulting highest 2.25 ×106 grams. study's broad ramifications demonstrate fuel technology's potential long-term fix addition advancing storage, represents step toward tackling

Language: Английский

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pH‐Universal Electrocatalytic CO₂ Reduction with Ampere‐Level Current Density on Doping‐Engineered Bismuth Sulfide

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(32)

Published: May 27, 2024

Abstract The practical application of the electrocatalytic CO 2 reduction reaction (CO RR) to form formic acid fuel is hindered by limited activation molecules and lack universal feasibility across different pH levels. Herein, we report a doping‐engineered bismuth sulfide pre‐catalyst (BiS‐1) that S partially retained after electrochemical reconstruction into metallic Bi for RR formate/formic with ultrahigh performance wide range. best BiS‐1 maintains Faraday efficiency (FE) ~95 % at 2000 mA cm −2 in flow cell under neutral alkaline solutions. Furthermore, catalyst shows unprecedentedly high FE (~95 %) current densities from 100 1300 acidic Notably, density can reach 700 while maintaining above 90 membrane electrode assembly electrolyzer operate stably 150 h 200 . In situ spectra functional theory calculations reveals doping modulates electronic structure effectively promotes formation HCOO* intermediate generation. This work develops efficient stable electrocatalysts sustainable production.

Language: Английский

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Accelerating the net-zero economy with CO2-hydrogenated formic acid production: Process development and pilot plant demonstration

Joule, Journal Year: 2024, Volume and Issue: 8(3), P. 693 - 713

Published: Jan. 30, 2024

A process capable of large-scale formic acid (FA) production via CO2 hydrogenation is presented. This study provides the key strategies for use in developing a viable continuous operation. Based on proposed strategies, pilot-scale with capacity 10 kg/day was constructed. The operability demonstrated pilot plant operation >100 h, achieving conversion rate 82% and producing FA high purity >92 wt %. Techno-economic analysis life cycle assessment results validated simulation model indicate that significantly reduces level global warming impact by 42% while cutting cost 37%, compared conventional FA. contents this provide comprehensive manual utilization solution, showing economic profitability as well environmental reduction.

Language: Английский

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Solar‐Driven Biomass Reforming for Hydrogen Generation: Principles, Advances, and Challenges

Advanced Science, Journal Year: 2024, Volume and Issue: 11(29)

Published: May 30, 2024

Abstract Hydrogen (H 2 ) has emerged as a clean and versatile energy carrier to power carbon‐neutral economy for the post‐fossil era. generation from low‐cost renewable biomass by virtually inexhaustible solar presents an innovative strategy process organic solid waste, combat crisis, achieve carbon neutrality. Herein, progress breakthroughs in solar‐powered H production are reviewed. The basic principles of solar‐driven first introduced better understanding reaction mechanism. Next, merits shortcomings various semiconductors cocatalysts summarized, strategies addressing related issues also elaborated. Then, bio‐based feedstocks reviewed with emphasis on effect photocatalysts catalytic systems performance. Of note, concurrent value‐added chemicals reforming is emphasized well. Meanwhile, emerging photo‐thermal coupling that shows grand prospect maximally utilizing entire spectrum discussed. Further, direct utilization hydrogen green reductant producing via reactions highlighted. Finally, challenges perspectives photoreforming toward envisioned.

Language: Английский

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Low nickel loading carbon microfibers fabricated by electrospinning for the glycerol electrooxidation coupled with the continuous gas-phase CO2 reduction reaction towards formate

Journal of Power Sources, Journal Year: 2025, Volume and Issue: 631, P. 236260 - 236260

Published: Jan. 28, 2025

Language: Английский

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