文献类型：期刊文献

英文题名：CO2 electroreduction in a bubble-plate electrolyzer: A new route to scale up

作者：Hu, Qing[1];Liu, Yujing[1];Wei, Zhihang[1];Chao, Linjie[1];Luo, Lin[1];Cheng, Zhenmin[1]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn & Low Carbon Technol, Shanghai, Peoples R China

年份：2025

卷号：71

期号：8

外文期刊名：AICHE JOURNAL

收录：;EI(收录号：20251918370647);WOS:【SCI-EXPANDED(收录号:WOS:001478291500001)】；

语种：英文

外文关键词：bubble-plate electrolyzer; CO2 electroreduction; cobalt phthalocyanine; mass transfer; single-pass conversion

摘要：CO2 electroreduction (CO2ER) provides a promising pathway for carbon utilization, but achieving high single-pass conversion is hindered by mass transfer limitations and the scalability constraints of conventional reactor designs. This work introduces a novel bubble-plate electrolyzer (BPE) that incorporates cobalt phthalocyanine (CoPc) catalysts immobilized on carbon paper substrates. This design creates abundant dynamic triple-phase interfaces, enhancing mass transfer and reaction kinetics. A gas-facing catalyst configuration optimizes bubble-catalyst interactions, resulting in exceptional catalytic performance and enabling scalable reactor design. A multi-layer BPE architecture achieves a remarkable single-pass CO2 conversion of 28.74%, a substantial increase from the single-layer 6.11%, while maintaining excellent kinetic similarity and operational simplicity. Mechanistic studies reveal that a synergistic interplay between current density and CO2 concentration governs CO2 reduction within the BPE, where the unique gas flow configuration optimizes reactant residence time. This innovative BPE design provides a compelling strategy for practical and scalable carbon conversion technologies.