Two-dimensional closely packed amide polyphthalocyanine iron absorbed on Vulcan XC-72 as an efficient electrocatalyst for oxygen reduction reaction
Two-dimensional closely packed amide polyphthalocyanine iron absorbed on Vulcan XC-72 as an efficient electrocatalyst for oxygen reduction reaction
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吸附在 Vulcan XC-72 上的二维密堆积酰胺聚酞菁铁作为氧还原反应的高效电催化剂
DOI：
10.1016/j.cattod.2018.01.029
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发表时间：
2018
期刊：
影响因子：
5.3
通讯作者：
PR China
中科院分区：
文献类型：
--
作者：
Chongyun Sun;Zhongfang Li;Jianwei Yang;Suwen Wang;Xizhan Zhong;Likai Wang;School of Chemistry;Chemical Engineering;Sh;ong University of Technology;Zibo;PR China
设计廉价、高效的氧还原电催化剂对燃料电池装置的商业化发展至关重要。本文首先制备了以Vulcan XC-72为载体的具有二维平面结构的紧密堆积酰胺聚酞菁铁（CPMPcFe），然后将其前驱体在氩气保护下于400 °C烧结，得到CPMPcFe/C（1：1）催化剂。通过SEM和TEM对催化剂进行表征，证实了CPMPcFe在Vulcan XC-72表面均匀分布。X射线光电子能谱（XPS）进一步确定了CPMPcFe/C（1：1，400 °C）的活性中心为聚酞菁环上的FeN 4。在电化学方面，CPMPcFe/C具有优良的氧还原反应电催化性能。首先，它显示出0.87 V的半波电位，这比铁酞菁/C（FePc/C，0.71 V）和6wt%Pt/C（0.83 V）的半波电位更正。5000次循环伏安测试后，CPMPcFe/C的氧还原电流损失为0.05 mA cm-2，而FePc/C的氧还原电流损失为0.35 mA cm-2。计时电流法测试表明，在相同的操作条件下，FePc/C的电流密度迅速下降约28.2%，而CPMPcFe/C的电流密度仅下降约16.9%。
It is crucial to design the inexpensive and highly efficient electrocatalysts for oxygen reduction reaction (ORR) for the future commercialization of fuel cell devices. Herein, a closely packed amide polyphthalocyanine iron (CPMPcFe) with two-dimensional planar structure supported by Vulcan XC-72 was firstly prepared, and then the precursor was sintered at 400 °C under an Ar flow to obtain the CPMPcFe/C (1:1) catalyst. The SEM and TEM images of the CPMPcFe/C catalysts confirmed that CPMPcFe was well distributed on the surface of Vulcan XC-72. X-ray photoelectron spectroscopy (XPS) further identified the active center of CPMPcFe/C (1:1, 400 °C) was FeN4in the polyphthalocyanine ring. Electrochemically, CPMPcFe/C displays excellent oxygen reduction reaction electrocatalytical properties. Firstly, it showed a half-wave potential of 0.87 V, which was more positive than those of iron phthalocyanine/C (FePc/C, 0.71 V) and 6 wt% Pt/C (0.83 V). The oxygen reduction current loss of CPMPcFe/C after 5000-cycle cyclic voltammetry test was 0.05 mA cm−2, while that of FePc/C was 0.35 mA cm−2. Chronoamperometry tests showed that FePc/C exhibited a rapid decrease of the current density by about 28.2%, while there was only about 16.9% loss for the current density of CPMPcFe/C under the same operation.
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影响因子：
5.3
作者：
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通讯作者：
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影响因子：
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影响因子：
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