CO_(2)-mediated bicarbonate conversion to concentrated formate in a CEM-based electrolyzer  

作　　者：Haocheng Xiong Donghuan Wu Haonan Li Andrew Li Qikun Hu Siyao Song Bingjun Xu Qi Lu 

机构地区：[1]State Key Laboratory of Chemical Engineering,Department of Chemical Engineering,Tsinghua University,Beijing 100084,China [2]College of Chemistry and Molecular Engineering,Peking University,Beijing 100871,China [3]Ordos Laboratory,Inner Mongolia 017000,China

出　　处：《Journal of Energy Chemistry》2025年第1期605-611,共7页能源化学(英文版)

基　　金：National Natural Science Foundation of China(22379083);State Key Laboratory of Chemical Engineering(SKL-ChE-23T02);financial support from Beijing National Laboratory for Molecular Sciences;support from Tsinghua International School’s Research Mentoring Program;support from Tsinglan School’s Research Mentoring Program。

摘　　要：Renewable energy-driven bicarbonate conversion to valuable chemicals presents an attractive strategy for mitigating CO_(2)emissions,as bicarbonate can be efficiently generated from the capture of atmospheric CO_(2)using alkaline solutions with reactive absorption.In this work,we present a CO_(2)-mediated bicarbonate conversion to pure formate using a cation exchange membrane-based electrolyzer with a 25 cm^(2)electrode area.Our electrolysis achieved selectivities exceeding 75%for formate at a total current of 2.5 A,achieving formate concentrations up to 1.2 M and yields as high as 95%over extended periods.The techno-economic assessment confirmed the economic viability of the process,highlighting the potential for bicarbonate electrolysis as a sustainable method for producing valuable chemicals.

关 键 词：ELECTROCATALYSIS Techno-economic assessments ELECTROCHEMISTRY Flow electrolyzer 

分 类 号：O62[理学—有机化学]