| 钙钛矿型氧化物La0.65Sr0.3MnO3对氧还原的催化活性研究 |
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| 引用本文： | 李丹林,李赏,潘牧.钙钛矿型氧化物La0.65Sr0.3MnO3对氧还原的催化活性研究[J].湖北大学学报(自然科学版),2011,33(1):98-102. |
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| 作者姓名： | 李丹林 李赏 潘牧 |
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| 作者单位： | 武汉理工大学材料复合新技术国家重点实验室,湖北,武汉,430070 |
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| 摘 要： | 用溶胶-凝胶法合成钙钛矿型氧化物La<,0.65> Sr<,0.3>MnO3(LSMO)纳米粉末,并采用XRD,动态光散射、透射电镜以及电化学方法对粉体进行结构和氧还原催化活性的表征.在0.1 mol/L的H<,2>SO<,4>中线性扫描测量,结果表明,掺了碳粉BP2000(20%(质量分数,w/w))的LSMO粉末对...
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| 关 键 词： | 燃料电池 非铂催化剂 氧还原 催化活性 |
Study on the catalytic activity of perovskite-type oxide La0.65Sr0.3MnO3 for oxygen reduction |
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| LI Danlin,LI Shang,PAN Mu.Study on the catalytic activity of perovskite-type oxide La0.65Sr0.3MnO3 for oxygen reduction[J].Journal of Hubei University(Natural Science Edition),2011,33(1):98-102. |
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| Authors: | LI Danlin LI Shang PAN Mu |
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| Institution: | (State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan 430070,China) |
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| Abstract: | A nanometer powder of perovskite-type oxides La0.65Sr0.3MnO3（LSMO） was synthesized by sol-gel method,and the structure and the catalytic activity for oxygen reduction of the resulting compound were characterized by powder X-ray diffraction,Dynamic light scattering,Transmission electron micrographs and electrochemical measurement.The result of the linear sweep indicated that with 20%（w/w） carbon powder BP2000,LSMO exhibited catalytic activity for oxygen reduction reaction in 0.1 mol·L-1 H2SO4,the onset potential was 0.5 V（vs SCE）.The solubility of LSMO in the acid environment was also studied.Comparing to commercial Pt/C catalyst,the solubility of LSMO in acid environment was larger by an order of magnitude,but the stability of LSMO needs further improvement. |
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| Keywords: | fuel cell non-precious metal catalyst oxygen reduction reaction catalytic activity |
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