金属卟啉负载炭黑电催化剂氧还原性能

REN Qizhi; MA Xiaoxia; XIE Xianyu; YAN Tao; MA Zifeng

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金属卟啉负载炭黑电催化剂氧还原性能

更新时间：2025-12-10

- 金属卟啉负载炭黑电催化剂氧还原性能
- CIESC Journal Issue 11, (2006)
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- Online First：25 November 2006，
  
  Published：25 November 2006
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REN Qizhi, MA Xiaoxia, XIE Xianyu, et al. 金属卟啉负载炭黑电催化剂氧还原性能[J]. CIESC Journal, 2006, (11).
DOI：

REN Qizhi, MA Xiaoxia, XIE Xianyu, et al. 金属卟啉负载炭黑电催化剂氧还原性能[J]. CIESC Journal, 2006, (11). DOI：

摘要

合成了四甲氧基苯基钴卟啉（CoTMPP）和四甲氧基苯基铁卟啉（FeTMPP）配合物，分别负载于经过双氧水和硝酸预处理且掺杂了MnOx的炭载体，用于质子交换膜燃料电池阴极氧还原反应电催化剂.讨论了不同中心金属离子、不同载体、不同预处理方法和不同焙烧温度对催化剂催化活性的影响.通过旋转圆盘电极技术（RDE）和紫外可见光谱（UV-vis）测试，利用循环伏安曲线（CV）和Koutevky-Levich关系式评价了电催化剂对氧还原反应的电催化性能.研究表明，CoTMPP负载于双氧水处理过的炭载体BP 2000上活性最好，焙烧的最佳温度是900℃，同时发现在载体中掺杂MnOx并没有达到预期效果.

Abstract

To obtain cathode electrocatalysts for the oxygen reduction in proton exchange membrane（PEM）fuel cell，iron and cobalt tetramethoxyphenylporphyrins adsorbed on pretreated carbons

including black pearls 2000（BP）and Vulcan XC-72（Vulcan）respectively by depositing MnOx were investigated in detail.The effects of different central metal ions，carbon supports，pretreatment methods and various heat-treatment temperatures were compared.The catalysts were evaluated by RDE in 0.5 mol·L-1 H2SO4.The best results were obtained for CoTMPP on BP pretreated by H2O2.The most active and stable catalysts were obtained by calcining at a high temperature（900℃）.After heat-treatment at 900℃，Co—N4 bond structure in CoTMPP catalyst was no longer detected which meant that the central structure of the catalyst was changed during heat-treatment.Trying to deposit MnOx in carbons did not achieve the expected result in acid medium.

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