Oxygen Electroreduction on Heat-treated Multi-walled Carbon Nanotubes Supported Iron Polyphthalocyanine in Acid Media
文献类型：期刊论文
| 作者 | Zhang, R; Peng, YX; Li, ZP; Li, K; Ma, J; Liao, Y; Zheng, LR; Zuo, X; Xia, DG; Zheng LR(郑黎荣)
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| 刊名 | ELECTROCHIMICA ACTA
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| 出版日期 | 2014 |
| 卷号 | 147页码:343-351 |
| 关键词 | Iron polyphthalocyanine Multi-walled carbon nanotubes Oxygen reduction reaction Heat-treated XAFS |
| 英文摘要 | Multi-walled carbon nanotubes (MWCNTs) supported iron phthalocyanine (FePc), binuclear iron phthalocyanine (bi-FePc) and iron polyphthalocyanine (FePPc) were prepared by a solvothermal process. The resulting FePc/MWCNTs, bi-FePc/MWCNTs and FePPc/MWCNTs were heat-treated in argon (Ar) atmosphere at various temperatures ranging from 500 to 900 degrees C to obtain optimized catalysts for the oxygen reduction reaction (ORR). The crystal structure, morphology and chemical environment of the catalysts were examined by ultraviolet-visible (UV-Vis) spectroscopy, X-ray diffraction (XRD), highresolution transmission electron microscopy (HRTEM), energy dispersive X-ray spectroscopy (EDX), Xray photoelectron spectroscopy (XPS) and X-ray absorption fine structure spectroscopy (XAFS). The electrocatalytic activity of the obtained catalysts was measured using a rotating disk electrode (RDE) technique in 0.5 mol L-1 H2SO4 solution saturated with oxygen. The ORR activity of the heat-treated FePPc/MWCNTs was found to be better than that of the heat-treated bi-FePc/MWCNTs and FePc/ MWCNTs. Furthermore, the heat-treatment temperature greatly influenced the catalytic ORR ability of the catalysts. The FePPc/MWCNTs heat-treated at 800 degrees C exhibited a four-electron transfer process and the best ORR activity (E-ORR = 0.79 V vs. RHE), methanol resistance, and stability (current loss = 13% at -0.13 V vs. Hg/Hg2SO4 after 55 h). XPS indicated that pyridine-type nitrogen, not graphitic-N, played a critical role in determining the electrocatalytic ORR activity of the amples. XAFS showed that the coordination geometry around Fe was close to square planar in structure, suggesting that the Fe-N-4 structure was produced by the high temperature treatment. (C) 2014 Elsevier Ltd. All rights reserved. |
| 学科主题 | Electrochemistry |
| 收录类别 | SCI |
| WOS记录号 | WOS:000346178800043 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/224998]  |
| 专题 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Zhang, R,Peng, YX,Li, ZP,et al. Oxygen Electroreduction on Heat-treated Multi-walled Carbon Nanotubes Supported Iron Polyphthalocyanine in Acid Media[J]. ELECTROCHIMICA ACTA,2014,147:343-351. |
| APA | Zhang, R.,Peng, YX.,Li, ZP.,Li, K.,Ma, J.,...&郑黎荣.(2014).Oxygen Electroreduction on Heat-treated Multi-walled Carbon Nanotubes Supported Iron Polyphthalocyanine in Acid Media.ELECTROCHIMICA ACTA,147,343-351. |
| MLA | Zhang, R,et al."Oxygen Electroreduction on Heat-treated Multi-walled Carbon Nanotubes Supported Iron Polyphthalocyanine in Acid Media".ELECTROCHIMICA ACTA 147(2014):343-351. |
入库方式： OAI收割
来源：高能物理研究所
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