| 化学还原法制备铂及铂合金催化剂及其性能 |
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| 引用本文： | 索春光,刘晓为,张宇峰,唐鼎,陆学斌,夏洪洋,曹姗姗.化学还原法制备铂及铂合金催化剂及其性能[J].贵金属,2006,27(4):32-37. |
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| 作者姓名： | 索春光 刘晓为 张宇峰 唐鼎 陆学斌 夏洪洋 曹姗姗 |
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| 作者单位： | 1. 哈尔滨工业大学,MEMS中心,黑龙江,哈尔滨,150001
2. 黑龙江大学,电子工程学院,黑龙江,哈尔滨,150080 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)
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解放军总装备部预研重点基金 |
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| 摘 要： | 采用混合水溶液浸渍,硼氢化钠还原的方法制备了微型直接甲醇燃料电池用电催化剂,包括碳载铂、碳载铂基合金电催化剂.XRD、SEM、EDX测试结果表明催化剂的粒度达纳米级,且分散性好、原子摩尔配比合理.将Pt/C、Pt合金/C分别作为电池的阴极和阳极电催化剂,通过电池的极化曲线和功率密度曲线筛选出最佳的催化剂组成.在室温下,甲醇浓度为2mol/L时,阴极采用30wt%Pt的Pt/C,阳极采用n(Pt)∶n(Ru)∶n(Ir)∶n(Mo) = 2∶1∶2∶3的PtRuIrMo/C电催化剂,其电池的性能最好.
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| 关 键 词： | 物理化学 直接甲醇燃料电池 电催化剂 Pt催化剂 Pt合金催化剂 |
| 文章编号： | 1004-0676(2006)04-0032-06 |
| 收稿时间： | 2005-11-11 |
| 修稿时间： | 2005年11月11 |
Preparation of Pt and Pt -based Alloy/C Electrocatalysts by Chemical Reduction and Their Properties |
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| SUO Chunguang,LIU Xiaowei,ZHANG Yufeng,TANG Ding,LU Xuebin,XIA Hongyang,CAO Shanshan.Preparation of Pt and Pt -based Alloy/C Electrocatalysts by Chemical Reduction and Their Properties[J].Precious Metals,2006,27(4):32-37. |
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| Authors: | SUO Chunguang LIU Xiaowei ZHANG Yufeng TANG Ding LU Xuebin XIA Hongyang CAO Shanshan |
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| Affiliation: | 1. MEMS Center, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China; 2. Electronics Engineering College, Heilongjiang University, Harbin, Heilongjiang 150080, China |
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| Abstract: | The Pt/C and 3 kinds of Pt-based alloy/C electrocatalysts for direct methanol fuel cell(DMFC) were prepared by impregnation with aqueous solution and chemical reduction with NaBH4.XRD,SEM and EDX analyses indicated that the average particle size of active metals is in the range of several nanometers with excellent dispersion,and that the molar ratio of them are reasonable.The Pt/C and Pt-based alloys/C were adopted as the cathodic catalyst and the anodic catalyst,respectively.The performances of the DMFC were tested.The polarization curves and power density curves of the cells were measured to determine the optimal alloy composition and condition for the electrocatalysts.The results showed that the DMFC with 30wt% Pt/C as the cathodic catalyst and n(Pt):n(Ru):n(Ir):n(Mo) = 2:1:2:3 PtRuIrMo/C as the anodic catalyst at RT in 2.0mol/L methanol solution has the best performances. |
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| Keywords: | Physicochemistry Direct methanol fuel cell(DMFC) Electrocatalyst Pt catalyst Pt-based alloy catalysts |
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