石油化工2026，Vol.55Issue(6)：811-819,9.DOI:10.3969/j.issn.1000-8144.2026.06.001
新型固体氧化物电解池阳极用于高效电催化甲烷氧化偶联
Novel solid oxide electrolysis cell anode for efficient electrocatalytic oxidative coupling of methane
欧阳瑞泽 1白帆 2张穆薇 2李一枫2
作者信息
- 1. 浙江大学 工程师学院,浙江 杭州 310015||中石化(北京)化工研究院有限公司,北京 100013
- 2. 中石化(北京)化工研究院有限公司,北京 100013
- 折叠
摘要
Abstract
The work developed a La0.6Sr0.4Co0.8Fe0.2O3+δ-(Ce0.9Gd0.1)O1.95(GDC)composite anode with a novel micro-channel structure(denoted as micro-channel electrode(MCE))and fabricated a solid oxide electrolysis cell(SOEC)based on the MCE to achieve electrocatalytic oxidative coupling of CH4.The structure of MCE and the CH4 conversion performance of SOEC were characterized by using SEM,FTIR,and electrochemical measurements.The results show that when electrolyzing pure CH4 at 850℃,2.0 V,and 200 mA/cm2,the optimal SOEC achieves a high C2 product selectivity of 70.6%with no significant performance degradation over 6 000 s.In situ high-temperature infrared spectroscopy confirms that the unique micro-channel structure of MCE enhances the CH4 conversion rate,while the precisely controlled potential window suppresses the production of COx,thereby improving C2 product selectivity.DFT calculations reveal that the GDC component stabilizes active oxygen species O22-,facilitates C—H bond cleavage in CH4,concurrently inhibits oxygen evolution reaction,and stabilizes the lattice structure.The development of this composite anode provides new insights for designing high-performance SOEC anodes with novel structures and advancing the electrochemical conversion and utilization of CH4.关键词
固体氧化物电解池/甲烷氧化偶联/电催化/原位红外光谱Key words
solid oxide electrolysis cell/oxidative coupling of methane/electrocatalysis/in situ infrared spectroscopy分类
化学化工引用本文复制引用
欧阳瑞泽,白帆,张穆薇,李一枫..新型固体氧化物电解池阳极用于高效电催化甲烷氧化偶联[J].石油化工,2026,55(6):811-819,9.
