Chelate Effect on the synthesis of carbon supported Pt nanoparticles for PEMFC anodes

Proceedings of the International Conference on Energy and Sustainable Development: Issues and Strategies (ESD 2010) Pub Date : 2010-06-02 DOI:10.1109/ESD.2010.5598798

Shyh-Jiun Liu, W. Hwang, Chia-Hung Huang, Der‐Yuan Lee

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Abstract

Colloidal suspensions of spherical crystalline Pt nanoparticles with a narrow size distribution were synthesized using a microwave synthesis process. Analogous Pt-complexes (Pt(dien)2+, Pt(trien)2+, and Pt(en)22+. where dien = diethylenetriamine, trien = triethylenetetraamine, en = ethylenediamine) were deposited onto Vulcan XC-72 carbon powder to obtain Pt/C-x catalysts (x = 3, 4, and 22 represents the coordination number of the chelating agent). The Pt/C-x catalysts were evaluated under PEMFC conditions. X-ray diffraction and transmission electron microscopy were used to characterize the Pt/C-x catalysts. It was found that the Pt nanoparticles were uniform in size and highly dispersed on the carbon black supports. The chelating agents were expected to improve the growth of Pt particle size as well as the dispersion of Pt nanoparticles. In the PEMFC experiments, the mass-specific current density and mass-specific power density of the catalysts were as high as that of the commercial 20wt % Pt/C-ETEK catalyst.

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螯合效应对碳负载Pt纳米颗粒制备PEMFC阳极的影响

采用微波合成方法合成了粒径分布较窄的球形结晶Pt纳米颗粒胶体悬浮液。类似的Pt配合物(Pt(dien)2+， Pt(trien)2+和Pt(en)22+)。其中dien =二乙基三胺，trien =三乙基四胺，en =乙二胺)沉积在Vulcan XC-72碳粉上，得到Pt/C-x催化剂(x = 3,4, 22表示螯合剂的配位数)。在PEMFC条件下对Pt/C-x催化剂进行了评价。采用x射线衍射和透射电镜对Pt/C-x催化剂进行了表征。结果表明，Pt纳米粒子在炭黑载体上具有均匀的粒径和高度的分散性。该螯合剂有望改善Pt颗粒的生长和Pt纳米颗粒的分散。在PEMFC实验中，催化剂的质量比电流密度和质量比功率密度与20wt % Pt/C-ETEK商用催化剂相当。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Proceedings of the International Conference on Energy and Sustainable Development: Issues and Strategies (ESD 2010)

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