【摘要】 本研究使用细菌纤维素为前驱体制备碳气凝胶（CA），以其作为载体，通过浸渍和高温处理制得了柔性W-O-C/CA和WC/CA复合电极材料，研究了制备工艺对材料形貌、物相和对甲醇电催化氧化性能的影响。随着高温处理温度的上升和保温时间的延长，物相变化为：钨前驱体→钨氧化物(WO₃、WO_3-x、WO₂)→W→WC_x→WC。在700℃保温2 h制得的柔性电极，负载颗粒主要物相为缺氧钨氧化物(WO_3-x)、WO₂和少量碳化钨（WC），具有良好的甲醇电催化性能和长循环稳定性，0.8 V下电流密度为76.5 mA·cm^-2,1000次循环后峰电流密度保持初始值的88%，有望用于便携式或微型甲醇燃料电池阳极。更多还原

【Abstract】 In this study,carbon aerogel（CA）substrates were prepared by using bacterial cellulose as template,then flexible W-O-C/CA and WC/CA composite electrode materials were prepared by impregnation and high temperature treatment.The effects of preparat ion process on the phase,morphology and electrocatalytic p erformance of methanol were investigated.With the increase of heat treatment temperature and the extension of holding time,the phase change occurs as tungsten precursor→tungsten oxide(WO₃,WO_3-x,WO₂)→W→WC_x→WC.For the flexible electrode prepared at 700℃ for 2 h,the phases of the supported particles are oxygen-deficient tungsten oxide(WO_3-x),WO₂and tungsten carbide（WC）.The electrode has good electrocatalytic performance for methanol oxidation(peak current density of 76.5 mA·cm^-2at 0.8 V)and long-term cycling stability,the peak current density remains 88% of the initial value after 1000 cycles.This flexible electrode is expected to be used in the anode of portable or micro methanol fuel cell.更多还原