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Effect of Acid-leaching on Carbon-supported Copper Phthalocyanine Tetrasulfonic Acid Tetrasodium Salt (CuTSPc/C) for Oxygen Reduction Reaction
Last modified: 2014-10-07
Abstract
The slow cathodic ORR kinetics is a big challenge in a fuel cell [1]. Up to now, Pt is the best catalyst for ORR due to its high catalytic activity. However, the high cost and the insufficient electrochemical durability of Pt have limited the further commercialization of this technology. Looking for new non-precious metal alternative catalysts to replace Pt becomes the current key issue. In this regard, carbon-based transition metal macrocyclic complexe catalysts, due to their relatively higher catalytic activity and stability, have become one of the most promising candidates to replace Pt/C catalyst [2,3]. However, for revealing the mechanism of ORR and improving the ORR activity, we should know the active site in these catalysts, although there is a consensus that carbon, nitrogen and transition metals are all considered to be indispensable elements for the ORR activity [4]. Particular to transition metals, there is still a controversy whether it is a part of the active sites in these macrocyclic complexes. In this work, with carbon-supported copper phthalocyanine tetrasulfonic acid tetrasodium salt, CuTSPc/C, as a target, the role of transition metal in macrocycle complexe was investigated by acid-leaching procedures.
Keywords
Acid-leaching,CuTsPc,ORR,Fuel Cell
References
[1] A. Gewirth, M. Thorum, Electroreduction of dioxygen for fuel cell applications: materials and challenges. Inorg Chem 49 (2010) 3557.[2] X. Qing, J.J Shi, C.Y Ma, M.Y Fan, Z.Y Bai, Z.W Chen, J.L Qiao, J.J Zhang, Simultaneous formation of nitrogen and sulfur-doped transition metal catalysts for oxygen reduction reaction through pyrolyzing carbon-supported copper phthalocyanine tetrasulfonic acid tetrasodium salt. 266 (2014) 88.[3] V. Bambagioni, C. Bianchini, J. Filippi, A. Lavacchi, W. Oberhauser, A. Marchionni, S. Moneti, F. Vizza, R. Psaro, V.D. Santo, A. Gallo, S. Recchia, L. Sordelli, Single-site and nanosized Fe-Co electrocatalysts for oxygen reduction: synthesis, characterization and catalytic performance, J. Power Sources 196 (2011) 2519.[4] L. Ding, X. Qing, X.J. Zhou, J.L Qiao, H. Li, H.J Wang, Electrochemical behavior of nanostructured nickel phthalocyanine (NiPc/C) for oxygen reduction reaction in alkaline media, J Appl Electrochem 43 (2013) 43
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