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制备方法对Pt/CA催化剂电化学性能的影响
  • 期刊名称：中山大学学报（自然科学版）. 2010, 49, 15-19
  • 时间：0
  • 分类：O631.2[理学—高分子化学;理学—化学]
  • 作者机构：[1]中山大学化学与化学工程学院∥聚合物复合材料及功能材料教育部重点实验室,广东广州510275
  • 相关基金：国家自然科学基金资助项目（50632040 50802116 50972167）; 高等学校博士学科点专项科研基金资助项目（200805581014）; 广东省自然科学基金资助项目（8451027501001421）
  • 相关项目：储能用纳米炭材料的设计原理、制备科学及应用研究
关键词： 直接甲醇燃料电池, 炭气凝胶, Pt/CA催化剂, 乙二醇还原法, direct methanol fuel cells, carbon aerogel, Pt/carbon aerogel catalyst, ethylene glycol
中文摘要：

以炭气凝胶为载体,分别以甲醛、硼氢化钠和乙二醇为还原剂制备了Pt/CA催化剂。采用XRD技术对催化剂上Pt的分散度和粒径大小进行了分析。结果表明,以乙二醇为还原剂制备的Pt/CA催化剂上Pt分布最均匀,粒径为2.2 nm。通过电化学性能测试,发现3种催化剂的活性大小顺序为Pt/CA-EG〉Pt/CA-HCHO〉Pt/CA-NaBH4,其中催化剂Pt/CA-EG的电化学活性比表面积达到74.1 m^2/g,比质量活性达到248.8 A/g,并且其电化学性能远远好于商用催化剂。

英文摘要：

Platinum catalysts supported on carbon aerogel（Pt/CA） were prepared by different reducing agents,including in HCHO,NaBH4 and EG（ethylene glycol）.The Pt/CA catalysts were characterized by X-ray diffraction and cyclic voltammetry.The results indicated that the Pt/CA catalysts synthesized with ethylene glycol reducing agent achieved an extremely uniform Pt dispersion.The size of the Pt nanoparticles was 2.2 nm.Electrochemical analysis showed that the activity order was Pt/CA-EGPt/CA-HCHOPt/CA-NaBH4.The electrochemical active area and mass activity of the Pt/CA-EG catalyst reached 74.1 m2/g and 248.8 A/g,respectively,which were significantly higher than those of commercial Pt/C catalysts.

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新型蠕虫孔炭材料的可控制备及在超级电容器中的应用研究
期刊论文 21 会议论文 25 专利 1
储能用纳米炭材料的设计原理、制备科学及应用研究
期刊论文 103 会议论文 50 著作 1
聚苯乙烯基层次孔炭材料的可控制备及电化学性能研究
期刊论文 24 会议论文 28 专利 4
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