碳化温度对CF/Pd催化剂电催化氧化甲醇性能的影响
Effect of Carbonization Temperature on Electrocatalytic Oxidation Methanol Performance of CF/Pd Catalysts
王晨星 1刘禹松 1胡泳池 1胡家俊 1赵钰淳 1宋旭辉 1宋衍滟1
作者信息
- 1. 西安工程大学材料工程学院,西安 710048;西安工程大学西安市纺织复合材料重点实验室,西安 710048
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摘要
为了探究碳化温度对CF/Pd催化剂电催化氧化甲醇性能的影响,本文采用静电纺丝-热处理碳化-浸渍法制备了一系列CF/Pd催化剂,碳化温度分别设定为800、1 000和1 200℃,并对所得CF/Pd催化剂样品进行了微观形貌表征、成分分析及电化学测试.研究发现,800℃时,PAN/CA纤维已完全碳化,但随着碳化温度的升高,CF/Pd催化剂的纤维化程度逐渐降低,黏结现象逐渐明显,电催化氧化甲醇性能呈现先增加后降低的趋势.当碳化温度为1 000℃时,CF/Pd催化剂的电催化氧化甲醇性能最佳,其催化活性是商用Pd/C催化剂的5.4倍,稳定性是商用Pd/C催化剂的16.2倍.
Abstract
In order to investigate the effect of carbonization temperature on the electrocatalytic performance of CF/Pd catalysts for methanol oxidation,a series of CF/Pd catalysts were prepared by electrospinning heat treatment carbonization impregnation method.The carbonization temperatures were set at 800,1 000,and 1 200 ℃,respectively.The obtained CF/Pd catalyst samples were characterized by microscopic morphology,composition analysis,and electrochemical testing.Research has found that at 800 ℃,PAN/CA fibers have completely carbonized,but as the carbonization temperature increases,the degree of fibrosis of CF/Pd catalysts gradually decreases,and the bonding phenomenon becomes more obvious.The electrocatalytic performance of methanol oxidation shows a trend of first increasing and then decreasing.When the carbonization temperature is 1 000 ℃,the CF/Pd catalyst has the best electrocatalytic performance for methanol oxidation,with a catalytic activity 5.4 times that of commercial Pd/C catalysts and a stability 16.2 times that of commercial Pd/C catalysts.
关键词
碳纤维/催化剂/Pd/碳化温度/甲醇/甲醇燃料电池/电催化氧化Key words
carbon fiber/catalyst/Pd/carbonization temperature/methanol/methanol fuel cell/electrocatalytic oxidation引用本文复制引用
基金项目
陕西省自然科学基础研究计划(2023-JC-QN-0616)
西安市碑林区科技计划(GX2143)
中国纺织工业联合会科技指导性项目(2021041)
中国纺织工业联合会科技指导性项目(2021040)
西安市纺织复合材料重点实验室科技指导性项目(xafzfczd04)
出版年
2024
国家科技期刊平台
NSTL
万方数据