燃料化学学报（中英文）2023，Vol.51Issue(5)：571-580,10.DOI:10.1016/S1872-5813(22)60080-X
锚定在中空碳纳米笼上的Fe掺杂Co3O4用于高效电催化析氧
Fe-doped Co3O4 anchored on hollow carbon nanocages for efficient electrocatalytic oxygen evolution
摘要
Abstract
In this work, a Fe-doped Co3O4 OER electrocatalyst supported by an N-doped hollow nanocage carbon framework (Fe-Co3O4/NC) was successfully prepared by anion exchange and annealing in an air atmosphere strategy. XRD and HRTEM characterizations confirm that Fe the incorporation of Fe into the lattice of Co3O4. XPS characterization clarifies that the valence state of Co increases after the introduction of Fe, which originates from the electrons transfer from Co2+/Co3+ to Fe3+ and is induced by the valence electron configuration of cations. It simulates Co sites in-situ derived into CoOOH active species during the OER process, which is confirmed by the HRTEM and XPS characterization after the OER stability test. Electrochemical performance tests show that the Fe-Co3O4/NC electrocatalyst only exhibits 275 mV overpotential to achieve a current density of 10 mA/cm2 and stably maintains for 20 h at 100 mA/cm2. Together with 20％ Pt/C electrocatalyst, the composed two-electrode system only needs 2.041 V applied potential to achieve 100 mA/cm2 for total water splitting in a self-made membrane electrode device, which has industrial application prospects.关键词
四氧化三钴/掺杂/析氧反应Key words
Co3O4/doping/oxygen evolution reaction (OER)分类
化学化工引用本文复制引用
罗佳冰,王兴兆,张军,周炎..锚定在中空碳纳米笼上的Fe掺杂Co3O4用于高效电催化析氧[J].燃料化学学报（中英文）,2023,51(5):571-580,10.基金项目
The project was supported by the National Natural Science Foundation of China(21805308),the Taishan Scholar Project of Shandong province,the Key Research and Development Program of Shandong Province(2019GSF109075),the Fundamental Research Funds for the Central Universities(19CX05001A).国家自然科学基金(21805308),山东省泰山学者项目,山东省重点研发计划(2019GSF109075)和中央高校基本科研业务费专项资金(19CX05001A)资助 （21805308）
