Size-dependence of the electrochemical performance of Fe–N–C catalysts for the oxygen reduction reaction and cathodes of direct methanol fuel cells

Nanoscale ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 3418-3423 ◽  
Author(s):  
Xinlong Xu ◽  
Zhangxun Xia ◽  
Xiaoming Zhang ◽  
Huanqiao Li ◽  
Suli Wang ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Direct Methanol Fuel Cell ◽  
Size Dependence ◽  
Direct Methanol Fuel Cells ◽  
Reduction Reaction ◽  
Half Cell ◽  
Direct Methanol ◽  
And Performance ◽  
Methanol Fuel Cell

The size effect of Fe–N–C catalysts on the oxygen reduction reaction was investigated by both half-cell electrochemical measurements and direct methanol fuel cell tests and a correlation among size, porous structure and performance was proposed.

Analysis of Redox Reactions on Pt-Sn based Nano-catalysts for Direct Methanol Fuel Cell Applications

2018 ◽  
Vol 21 (1) ◽  
pp. 021-028 ◽  
Author(s):  
A. Sandoval-González ◽  
S. A. Gamboa
Keyword(s):  
Fuel Cell ◽  
Oxygen Reduction Reaction ◽  
Electric Power ◽  
Oxygen Reduction ◽  
Direct Methanol Fuel Cell ◽  
Oxidation Reaction ◽  
Reduction Reaction ◽  
Methanol Oxidation Reaction ◽  
Direct Methanol ◽  
Methanol Fuel Cell

Low content Pt based catalysts (Pt-Mx, Mx: SnO2, Sn) were prepared by microwave assisted-thermal synthesis. Pt-SnO2/C catalyst showed good performance for methanol oxidation reaction. Besides, Pt1Sn1/C showed good performance for catalyzing the oxygen reduction reaction. The catalysts were characterized structurally by X-ray diffraction and transmission electron microscopy techniques. It was possible to observe the presence of nanoparticles obtained by the synthesis method used in this work. The chemical composition of every material was determined by energy dispersive spectroscopy analysis. The electrochemical characterization of the electrocatalytic materials was carried out in acid medium by cyclic voltammetry and rotating disk electrode techniques. Pt-SnO2/C and Pt1Sn1/C were compared with commercial PtRu/C and Pt/C catalysts respectively. Pt-SnO2/C showed better electrochemical characteristics than commercial PtRu/C for performing the methanol oxidation reaction (MOR). Pt1Sn1/C showed an exchange current density two orders of magnitude higher than commercial Pt/C for performing the oxygen reduction reaction (ORR). The materials were evaluated in an experimental direct methanol fuel cell (DMFC) operating during 10 hours. The electric power density loss showed by the DMFC made with commercial catalysts (PtRu/C and Pt/C) was 67% while the DMFC made with Pt-SnO2/C and Pt1Sn1/C showed an electric power loss ca. 16%. It means that the catalysts synthesized in this work can be considered as good candidates for experimental direct methanol fuel cells.

O2 Reduction Reaction Activity of MN4 Spherical Polymeric Cobalt Porphyrin

2009 ◽  
Vol 610-613 ◽  
pp. 362-366
Author(s):  
Jia Xie ◽  
Ding Guo Xia ◽  
Zhi Hui Yu
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Direct Methanol Fuel Cell ◽  
Reduction Reaction ◽  
Spherical Particles ◽  
Thermal Method ◽  
Oxygen Reduction Reaction Activity ◽  
Direct Methanol ◽  
Electron Reduction ◽  
Methanol Fuel Cell

A novel cathode catalyst for direct methanol fuel cell, MN4 polymeric cobalt tetrametho -xyphenyl porphyrin (PCoTMPP), was prepared by solvent thermal method. The PCoTMPP exhibited spherical particles with diameter of 0.8~1µm. The spherical PCoTMPP showed a good monodisperse. The oxygen reduction reaction activity of PCoTMPP was examined by CV, LSV and CA methods. The results showed that PCoTMPP has a better oxygen reduction reaction activity and stability in comparison with CoTMPP and leads to a four-electron reduction of dioxygen to water.

Effects of using two transition metals in the synthesis of non-noble electrocatalysts for oxygen reduction reaction in direct methanol fuel cell

2018 ◽  
Vol 266 ◽  
pp. 220-232 ◽  
Author(s):  
Luigi Osmieri ◽  
Ricardo Escudero-Cid ◽  
Marco Armandi ◽  
Pilar Ocón ◽  
Alessandro H.A. Monteverde Videla ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Transition Metals ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Direct Methanol Fuel Cell ◽  
Reduction Reaction ◽  
Direct Methanol ◽  
Methanol Fuel Cell

PtPdCo ternary electrocatalyst for methanol tolerant oxygen reduction reaction in direct methanol fuel cell

2014 ◽  
Vol 154-155 ◽  
pp. 309-315 ◽  
Author(s):  
Yoon-Hwan Cho ◽  
Ok-Hee Kim ◽  
Dong Young Chung ◽  
Heeman Choe ◽  
Yong-Hun Cho ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Direct Methanol Fuel Cell ◽  
Reduction Reaction ◽  
Direct Methanol ◽  
Methanol Tolerant ◽  
Methanol Fuel Cell

scholarly journals Fe–Mn bimetallic oxides-catalyzed oxygen reduction reaction in alkaline direct methanol fuel cells

RSC Advances ◽  
2018 ◽  
Vol 8 (16) ◽  
pp. 8678-8687 ◽  
Author(s):  
Yuan Fang ◽  
Yonghui Wang ◽  
Fen Wang ◽  
Chengyong Shu ◽  
Jianfeng Zhu ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Synergistic Effect ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Direct Methanol Fuel Cells ◽  
Reduction Reaction ◽  
Direct Methanol ◽  
Methanol Fuel Cells ◽  
Bimetallic Oxides

Heterojunction interfaces and synergistic effect between Fe2O3 and Mn2O3 play a key role in Fe2O3/Mn2O3-catalyzed ORR.

Catalytic performance of a pyrolyzed graphene supported Fe–N–C composite and its application for acid direct methanol fuel cells

RSC Advances ◽  
2016 ◽  
Vol 6 (93) ◽  
pp. 90797-90805 ◽  
Author(s):  
Jingjing Xi ◽  
Fang Wang ◽  
Riguo Mei ◽  
Zhijie Gong ◽  
Xianping Fan ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Direct Methanol Fuel Cell ◽  
Carbon Nitride ◽  
Direct Methanol Fuel Cells ◽  
Catalytic Performance ◽  
Reduction Reaction ◽  
Composite Catalyst ◽  
Direct Methanol ◽  
Methanol Fuel Cells ◽  
Methanol Fuel Cell

A graphene supported Fe–N–C composite catalyst, synthesized by pyrolysis of graphene oxide, graphitic carbon nitride, ferric chloride and carbon black, was evaluated for the acid oxygen reduction reaction and the direct methanol fuel cell.

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