Ce掺杂CoFe-LDH的制备及电催化性能的研究
唐风莉 , 方凌云 , 刘鑫棚 , 周静 , 尚婷婷 , 温成成 , 陶伟 , 丁洁萍 , 唐风琴
现代化工 ›› 2026, Vol. 46 ›› Issue (6) : 170 -182.
Ce掺杂CoFe-LDH的制备及电催化性能的研究
Research progress on preparation and electrocatalytic performance of Ce doped CoFe-LDH
采用稀土铈掺杂策略,通过水热法构建三元蝴蝶结状Ce2.0-CoFe-LDH纳米线阵列。Ce3+部分取代Fe3+引发晶格畸变与缺陷增加,协同结构促进活性位点暴露及电荷/传质过程。表征结果证实材料结构特征。Ce掺杂显著提升电催化性能,其中Ce2.0-CoFe-LDH表现最佳:析氧反应(OER)在10 mA/cm2下电位为1.48 V,塔菲尔斜率71.64 mV/dec,Rct为2.651 Ω;电催化性能(UOR)电位为1.32 V,塔菲尔斜率79 mV/dec,Rct为2.377 Ω。结果表明,掺杂调控局域电子结构可有效提升电催化氧化性能。
A ternary butterfly-like Ce2.0-CoFe-LDH nanowire array was constructed via a hydrothermal method using a cerium doping strategy.Partial substitution of Fe3+ by Ce3+ induces lattice distortion and defect formation,while the unique architecture enhances active site exposure and facilitates charge/mass transfer.Characterization confirms the structural features.Ce doping markedly improves electrocatalytic performance,with Ce2.0-CoFe-LDH exhibiting the best activity:for oxygen evolution reaction (OER),a potential of 1.48 V at 10 mA·cm-2,a Tafel slope of 71.64 mV·dec-1,and an Rct of 2.651 Ω;for urea oxidation reaction (UOR),a potential of 1.32 V,a Tafel slope of 79 mV·dec-1,and an Rct of 2.377 Ω.These results indicate that heteroatom doping effectively tunes the local electronic structure,thereby enhancing electrocatalytic oxidation performance.
CoFe-LDH / Ce掺杂 / 催化 / 催化剂 / 电化学
CoFe-LDH / Ce doping / catalysis / catalyst / electrochemistry
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“双碳”背景下的甘肃省黄河流域区域再生水循环利用试点示范研究(A2025001)
塔里木大学校长基金项目(TDZKSS202250)
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