文献类型：期刊文献

英文题名：Inhibiting the peroxidation of Co(III) oxyhydroxide for stable and ampere-level glycerol oxidation

作者：Hu, Shi Meng[1,2];Ni Chen, Ya[3];Liu, Ji Kai[3];Zhang, Xin Yu[1,2,4];Jiang, Wen Han[4];Zhou, Yi[4];Yuan, Hai Yang[2,3];Liu, Peng Fei[2,3];Guo, Qinghua[1,2];Yang, Hua Gui[1,2,3];Wang, Fuchen[1,2];Yu, Guangsuo[1,2]

机构：[1]East China Univ Sci & Technol, Inst Clean Coal Technol, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Minist Educ, Engn Res Ctr Resource Utilizat Carbon Containing W, Chengdu, Peoples R China;[3]East China Univ Sci & Technol, Shanghai Engn Res Ctr Hierarch Nanomat, Sch Mat Sci & Engn, Key Lab Ultrafine Mat,Minist Educ, 130 Meilong Rd, Shanghai 200237, Peoples R China;[4]East China Univ Sci & Technol, Sch Resources & Environm Engn, Dept Energy & Chem Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2026

卷号：381

外文期刊名：APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY

收录：;EI(收录号：20253318987507);WOS:【SCI-EXPANDED(收录号:WOS:001583641300001)】；

基金：This work was financially supported by the National Natural Science Foundation of China (22309053) , the Science and Technology Com-mission of Shanghai Municipality (23YF1408500) , and the Fundamental Research Funds of the Central University (JKB01231715) .

语种：英文

外文关键词：Cobalt-based electrocatalysts; Glycerol oxidation reaction; Electrolytic hydrogen production; Membrane electrode assembly

摘要：Coupling the glycerol oxidation reaction (GOR) with hydrogen production offers significantly higher energy efficiency for the electrosynthesis of value-added chemicals compared to the sluggish oxygen evolution reaction (OER). However, developing low-cost electrocatalysts for high-efficiency GOR remains challenging due to the absence of strategies to stabilize active species while efficiently facilitating the conversion of glycerol at industry-level current densities. Herein, a Fe-doped cobalt hydroxide electrocatalyst for GOR is reported, which achieves 700 mA cm-2 at a voltage of 1.46 V vs. RHE, meanwhile showing formate Faradaic efficiency around 90 % and excellent stability (144 h at 1.40 V vs. RHE). The coupled GOR//HER system in the membrane electrode assembly merely requires 2.05 V to sustain a current density of 1 A cm-2, maintaining stable operation for 120 h. In situ Raman spectroscopy and theoretical analysis reveal that Fe doping preserves CoOOH from dehydrogenation to CoO2, which acts as a stable and active site for facilitating the rate-determining step of glycerol dehydrogenation and the C-C bond cleavage in GOR. This work presents an innovative perspective on elucidating the reaction mechanism of cobalt-based catalysts in GOR, proposes the effect of the dehydrogenation capacity of active sites on catalytic performance, and offers valuable guidance for optimizing catalyst design.