首页|碳化温度对CF/Pd催化剂电催化氧化甲醇性能的影响

碳化温度对CF/Pd催化剂电催化氧化甲醇性能的影响

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  • 国家科技期刊平台
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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.
Effect of Carbonization Temperature on Electrocatalytic Oxidation Methanol Performance of CF/Pd Catalysts
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.

carbon fibercatalystPdcarbonization temperaturemethanolmethanol fuel cellelectrocatalytic oxidation

王晨星、刘禹松、胡泳池、胡家俊、赵钰淳、宋旭辉、宋衍滟

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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

碳纤维 催化剂 Pd 碳化温度 甲醇 甲醇燃料电池 电催化氧化

陕西省自然科学基础研究计划西安市碑林区科技计划中国纺织工业联合会科技指导性项目中国纺织工业联合会科技指导性项目西安市纺织复合材料重点实验室科技指导性项目

2023-JC-QN-0616GX214320210412021040xafzfczd04

2024

人工晶体学报
中材人工晶体研究院

人工晶体学报

CSTPCD北大核心
影响因子：0.554
ISSN：1000-985X
年,卷(期)：2024.53(4)
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