Challenges and Opportunities in Electrocatalytic CO <sub>2</sub> Reduction to Chemicals and Fuels
TL;DR: In this article , the authors discuss practical challenges in the industrial chain that hamper the scaling-up deployment of the Electrocatalytic CO2 reduction (ECO2R) technology.
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Abstract: The global temperature increase must be limited to below 1.5 °C to alleviate the worst effects of climate change. Electrocatalytic CO2 reduction (ECO2R) to generate chemicals and feedstocks is considered one of the most promising technologies to cut CO2 emission at an industrial level. However, despite decades of studies, advances at the laboratory scale have not yet led to high industrial deployment rates. This Review discusses practical challenges in the industrial chain that hamper the scaling-up deployment of the ECO2R technology. Faradaic efficiencies (FEs) of about 100 % and current densities above 200 mA cm−2 have been achieved for the ECO2R to CO/HCOOH, and the stability of the electrolysis system has been prolonged to 2000 h. For ECO2R to C2H4, the maximum FE is over 80 %, and the highest current density has reached the A cm−2 level. Thus, it is believed that ECO2R may have reached the stage for scale-up. We aim to provide insights that can accelerate the development of the ECO2R technology.
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Citations
Pure-water-fed, electrocatalytic CO2 reduction to ethylene beyond 1,000 h stability at 10 A
Xiaojie She,Li Jun Zhai,Yifei Wang,Pei Xiong,Molly Meng-Jung Li,Tai-Sing Wu,Man Chung Wong,Xuyun Guo,Zhihang Xu,Huaming Li,Hui Xu,Ye Zhu,Shik Chi Edman Tsang,Shuping Lau +13 more
TL;DR: Researchers developed a pure-water-fed membrane-electrode-assembly system for CO2 reduction to ethylene, achieving over 1,000 hours of stability at 10 A with 50% Faradaic efficiency, suppressing carbonate formation and salt precipitation.
60
Isolated Tin(IV) Active Sites for Highly Efficient Electroreduction of CO2 to CH4 in Neutral Aqueous Solution.
TL;DR: A stable metal-organic framework (DMA) with isolated and distorted octahedral SnO62- active sites is reported as an electrocatalyst for eCO2RR to CH4 product rather than the common products formate and CO for reported Sn-based catalysts as mentioned in this paper .
26
Designing N-Confused Metalloporphyrin-Based Covalent Organic Frameworks for Enhanced Electrocatalytic Carbon Dioxide Reduction.
Zhixin Ren,Bo Zhao,Jing Xie +2 more
TL;DR: In this article , the N-confused metallo-Por-COFs are reported as novel catalysts for CO2 reduction reaction (CO2 RR) through systematic quantum-chemical studies, and they provide an alternative strategy for coordination regulation and theoretical guidelines for rational design of catalysts.
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Ultrafast Thermal Shock Synthesis and Porosity Engineering of 3D Hierarchical Cu-Bi Nanofoam Electrodes for Highly Selective Electrochemical CO2 Reduction.
Songyuan Yang,Huaizhu Wang,Yan Xiong,Mengfei Zhu,Jingjie Sun,Minghang Jiang,Pengbo Zhang,Jie Wei,Yizhi Xing,Zuo Tie,Zhong Jin +10 more
- 06 Nov 2023
TL;DR: Ultrafast thermal shock synthesis and porosity engineering of 3D hierarchical Cu-Bi nanofoam electrodes enable highly selective electrochemical CO2 reduction with high formate selectivity and stability.
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Emerging catalysts for the ambient synthesis of ethylene glycol from CO2 and its derivatives.
TL;DR: In this article , a review of the recent progress in the development of coal-to-ethylene glycol technology is introduced, and the main focus is on how to realize the preparation of EG under mild conditions.
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