Nanocomposite Cathode Catalyst with High Methanol Tolerance and Durability
文献类型：期刊论文
| 作者 | Zheng Ning; Zhu Chun-Mei; Sun Bin; Shi Zu-Jin; Liu Yan; Wang Yuan |
| 刊名 | ACTA PHYSICO-CHIMICA SINICA
 |
| 出版日期 | 2012-10-01 |
| 卷号 | 28期号:10页码:2263-2268 |
| 关键词 | Nanocomposite Catalyst Nitrogen-doped Carbon Nanohorn Phthalocyanine Durability Methanol Tolerance Cathode Of Direct Methanol Fuel Cell |
| ISSN号 | 1000-6818 |
| DOI | 10.3866/PKU.WHXB201208171 |
| 英文摘要 | We report the preparation, characterization, and electrocatalytic properties of a novel nanocomposite cathode catalyst (TiOPc-Pt/NSWCNH), which was assembled using Pt nanoclusters, TiOPc nanocrystal, and nitrogen-doped single walled carbon nanohorns (NSWCNHs) as building blocks. TiOPc-Pt/NSWCNH was characterized by inserting Pt nanoparticles in nano-networks formed by stacked NSWCNHs, and connecting some of the Pt nanoparticles with TiOPc nanocrystals. TiOPc-Pt/NSWCNH exhibits high electrocatalytic activity, excellent selectivity, and good durability for the oxygen reduction reaction (ORR) in the presence of methanol. In an O-2-saturated HClO4 aqueous solution containing methanol (0.5 mol.L-1), the onset potential over the TiOPc-Pt/NSWCNH catalyst shifted by more than +260 mV relative to that over a commercial Pt/C-JM catalyst. The mass activity and specific activity for the ORR over TiOPc-Pt/NSWCNH at 0.85 V (versus a reversible hydrogen electrode (RHE)) were 83.5 A . g(-1) and 0.294 mA . cm(-2), respectively. These results are much higher than those for Pt/C-JM. Cyclic voltammetry accelerated aging tests (0.6-1.0 V for 15000 cycles) in an O-2-saturated HClO4 aqueous solution containing methanol revealed that TiOPc-Pt/NSWCNH had higher durability than TiOPc-Pt/C. The high methanol tolerance of TiOPc-Pt/NCNH may be mainly derived from electron transfer from TiOPc nanocrystals to Pt nanoparticles. The nano-network and the high graphitization degree of the NSWCNHs are responsible for the excellent durability of TiOPc-Pt/NSWCNH. |
| 语种 | 英语 |
| WOS记录号 | WOS:000310181300005 |
| 出版者 | PEKING UNIV PRESS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/49633]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Liu Yan |
| 作者单位 | Peking Univ, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zheng Ning,Zhu Chun-Mei,Sun Bin,et al. Nanocomposite Cathode Catalyst with High Methanol Tolerance and Durability[J]. ACTA PHYSICO-CHIMICA SINICA,2012,28(10):2263-2268. |
| APA | Zheng Ning,Zhu Chun-Mei,Sun Bin,Shi Zu-Jin,Liu Yan,&Wang Yuan.(2012).Nanocomposite Cathode Catalyst with High Methanol Tolerance and Durability.ACTA PHYSICO-CHIMICA SINICA,28(10),2263-2268. |
| MLA | Zheng Ning,et al."Nanocomposite Cathode Catalyst with High Methanol Tolerance and Durability".ACTA PHYSICO-CHIMICA SINICA 28.10(2012):2263-2268. |
入库方式： OAI收割
来源：化学研究所
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