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dc.contributor.author蔡业政
dc.contributor.author骆明川
dc.contributor.author王芳辉
dc.contributor.author孙照楠
dc.contributor.author朱红
dc.contributor.authorCAI Ye-zheng
dc.contributor.authorLUO Ming-chuan
dc.contributor.authorWANG Fang-hui
dc.contributor.authorSUN Zhao-nan
dc.contributor.authorZHU Hong
dc.date.accessioned2016-05-09T07:32:20Z
dc.date.available2016-05-09T07:32:20Z
dc.date.issued2016-05-03
dc.identifier.citation电化学,2016,22(2):185-191.
dc.identifier.issn1006-3471
dc.identifier.urihttp://dx.doi.org/10.13208/j.electrochem.151147
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/98301
dc.description.abstract为提高燃料电池用贵金属铂催化氧还原反应性能,采用改进的多元醇法制备不同金属比例的碳载铂铁合金催化剂(D-Pt3Fe/C和D-PtFe/C)前驱体. 随后通过优化在惰性气体环境中的高温煅烧条件,将结构无序的合金结构转变为结构有序的合金催化剂(O-Pt3Fe/C和O-PtFe/C). 利用X射线粉末衍射(XRD)、透射电子显微镜(TEM)、电感耦合等离子体原子发射光谱(ICP-AES)和X射线光电子能谱(XPS)对所制得催化剂进行结构表征. 结果发现,所制得催化剂的合金纳米颗粒尺寸分布均一(4 ~ 6 nm),且均匀负载于碳载体上. 利用循环伏安法(CV)、线性扫描伏安法(LSV)对所制得催化剂进行电化学性能评估. 结果表明,O-PtFe/C的催化活性高于O-Pt3Fe/C,其质量活性(271.54 mA•g-1Pt)和比活性(0.73 mA•cm-2Pt)分别是商业JM Pt/C催化剂的4.3倍和7.3倍. 两种结构有序铂铁催化剂催化氧还原反应活性均高于商业JM Pt/C催化剂.
dc.description.abstractTo improve oxygen reduction reaction catalytic activity of the precious metals platinum for fuel cell, the precursors of carbon-supported structurally disordered platinum-iron alloy (D-Pt3Fe/C and D-PtFe/C) catalysts with different compositions were synthesized via a modified polyol reduction method. Then, by optimizing the annealing conditions in the inert gas, we turned the structurally disordered platinum-iron alloy to the structurally ordered platinum-iron alloy (O-Pt3Fe/C and O-PtFe/C) catalysts. The structural characterizations of the as-prepared catalysts were performed by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), inductively coupled plasma-atomic emission spectroscopy (ICP-AES), and X-ray photoelectron spectroscopy (XPS). The results showed that the as-prepared structurally ordered platinum-iron alloy nanoparticles with a small size in edge length of 4 ~ 6 nm were highly dispersed on the carbon support. The electrocatalytic performances of the as-prepared catalysts were evaluated by cyclic voltammetry (CV) and linear sweep voltammetry (LSV). It was found that the catalytic activity of O-PtFe/C was enhanced as compared to that of O-Pt3Fe/C. The mass activity and specific activity of O-PtFe/C are 271.54 mA•g-1Ptand 0.73 mA•cm-2Pt, respectively, which are 4.3 and 7.3 times higher than those of commercial JM Pt/C catalyst. The catalytic activities of both the as-prepared structurally ordered platinum-iron alloy catalysts for oxygen reduction reaction were higher than that of JM Pt/C catalyst.
dc.description.sponsorship国家自然科学基金项目(21176022, 21376022,21476020),国际科技合作项目(2013DFA51860)资助
dc.language.isozh
dc.publisher厦门大学《电化学》编辑部
dc.relation.ispartofseries燃料电池电催化和催化剂近期研究专辑(重庆大学 魏子栋教授主编)
dc.relation.ispartofseriesSpecial issue of Electrocatalyst and Electrocatalysis in Fuel Cells(Editor: Professor Wei Zi-dong)
dc.source.urihttp://electrochem.xmu.edu.cn/CN/abstract/abstract10252.shtml
dc.subject催化剂
dc.subject铂铁合金
dc.subject结构有序
dc.subject氧还原反应
dc.subjectcatalysts
dc.subjectplatinum-iron alloy
dc.subjectstructurally ordered
dc.subjectoxygen reduction reaction
dc.title合成具有高氧还原反应催化活性的结构有序铂铁合金催化剂
dc.title.alternativeSynthesis of structurally ordered platinum-iron catalysts with enhanced oxygen reduction reaction activity
dc.typeArticle
dc.description.note作者联系地址:北京化工大学 化工资源有效利用国家重点实验室,理学院,北京,100029
dc.description.noteAuthor's Address: State Key Laboratory of Chemical Resource Engineering, School of Science,Beijing University of Chemical Technology, Beijing100029, China
dc.description.note通讯作者E-mail:zhuho128@126.com


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