炭载Pd-Ni合金纳米粒子对甲酸的电催化氧化

高等学校化学学报 ›› 2011, Vol. 32 ›› Issue (6): 1349.

炭载Pd-Ni合金纳米粒子对甲酸的电催化氧化

奚彩明, 施毅, 赵佳越, 周益明, 唐亚文, 陈煜, 陆天虹

江苏省新型动力电池重点实验室, 电化学实验室, 南京师范大学化学与材料科学学院, 南京 210046

收稿日期:2010-11-08 修回日期:2011-03-23 出版日期:2011-06-10 发布日期:2011-05-10
通讯作者: 周益明;陈煜 E-mail: zhouyiming@njnu.edu.cn;ndchenyu@yahoo.cn
基金资助:
国家自然科学基金(批准号: 21073094), 江苏省高校自然科学基金(批准号: 10KJB150007)和江苏省高校优势学科建设工程资助项目资助.

Electrocatalytic Oxidation of Formic Acid on the Carbon Supported Pd-Ni Alloy Nanoparticles

XI Cai-Ming, SHI Yi, ZHAO Jia-Yue, ZHOU Yi-Ming*, TANG Ya-Wen, CHEN Yu*, LU Tian-Hong

Jiangsu Key Laboratory of New Power Batteries, Laboratory of Electrochemistry, College of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210046, China

Received:2010-11-08 Revised:2011-03-23 Online:2011-06-10 Published:2011-05-10
Contact: ZHOU Yi-Ming;CHEN Yu E-mail: zhouyiming@njnu.edu.cn;ndchenyu@yahoo.cn
Supported by:
国家自然科学基金(批准号: 21073094), 江苏省高校自然科学基金(批准号: 10KJB150007)和江苏省高校优势学科建设工程资助项目资助.

摘要/Abstract

摘要： 通过液相还原法制备了具有不同原子比例的Pd-Ni/C催化剂，并且使用X射线衍射（XRD）、透射电子显微镜(TEM)和X射线光电子能谱(XPS) 等表征手段对制备的催化剂进行了表征，总结了Ni的掺杂对Pd-Ni合金纳米粒子的尺寸及晶体结构的影响。电化学测试结果表明：适量的Ni的掺杂不但能够增强催化剂对甲酸催化氧化的活性，而且还能够提高催化剂的稳定性。因此，Pd-Ni/C催化剂是一类具有潜在应用前景的直接甲酸燃料电池阳极催化剂

关键词: 甲酸, Pd-Ni纳米粒子, 催化剂, 电催化氧化, 直接甲酸燃料电池

Abstract: Formic acid electrooxidation on Pd catalysts has been extensively investigated due to potential application in direct formic acid fuel cells. To improve the stability of catalysts and promote formic acid electrooxidation through the direct pathway, various Pd-based bimetallic catalysts has been received much attentions. In this work, the carbon-supported Pd-Ni (Pd-Ni/C) catalysts with different Pd/Ni atomic ratios are prepared by the impregnation-reduction method. These catalysts are characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS). The resulting physicochemical characterizations indicate that particle size, crystal structure and electron structure of Pd nanoparticles by adding Ni element. In addition, the effect of Pd/Ni atomic ratios on electrocatalytic performance of Pd-Ni/C catalysts for formic acid electrooxidation is also demonstrated by several electrochemical measures. It is observed that Pd-Ni/C catalyst with the suitable Pd/Ni atomic ratio exhibits excellent electrocatalytic performance and stability for the formic acid electrooxidation.

Key words: Formic acid, Pd-Ni nanoparticles, Catalyst, Electrocatalytic oxidation

中图分类号:

O613.71

TrendMD:

奚彩明, 施毅, 赵佳越, 周益明, 唐亚文, 陈煜, 陆天虹. 炭载Pd-Ni合金纳米粒子对甲酸的电催化氧化. 高等学校化学学报, 2011, 32(6): 1349.

XI Cai-Ming, SHI Yi, ZHAO Jia-Yue, ZHOU Yi-Ming*, TANG Ya-Wen, CHEN Yu*, LU Tian-Hong. Electrocatalytic Oxidation of Formic Acid on the Carbon Supported Pd-Ni Alloy Nanoparticles. Chem. J. Chinese Universities, 2011, 32(6): 1349.

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