Novel methanol-tolerant Ir–S/C chalcogenide electrocatalysts for oxygen reduction in DMFC fuel cell
Source abstract
Abstract
Abstract Novel methanol-tolerant oxygen-reduction catalysts, iridium–sulphur (Ir–S) chalcogenides with different Ir/S atomic ratios, were synthesized via a precipitation method using H2IrCl6 and Na2SO3 as the Ir and S precursors. Powder X-ray diffraction (XRD) and transmission electron microscopy (TEM) were used to characterize the IrxS1−x/C chalcogenide catalysts. Particle size ranging from 2.5 to 2.8 nm though obvious agglomeration was found on carbon support. However, these chalcogenide catalysts showed strong catalytic activity towards the oxygen reduction reaction (ORR) and high methanol tolerance, strongly suggesting these novel catalysts as promising candidates for direct methanol fuel cell (DMFC) cathode applications.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Electrocatalysts for Energy Conversion · Fuel Cells and Related Materials · Electrochemical Analysis and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (26)
Show source-provided references
1. The structure analysis of the active centers of Ru-containing electrocatalysts for the oxygen reduction. An in situ EXAFS study10.1016/S0013-4686(02)00351-1 ↗
2. Energy conversion catalysis using semiconducting transition metal cluster compounds10.1038/323431a0 ↗
3. Electrooxidation of methanol on iridium in acidic solutions: Electrocatalysis and surface characterization by infrared spectroscopy10.1021/j100293a020 ↗
4. Adsorption and anodic oxidation of methanol on iridium and rhodium electrodes10.1016/0013-4686(71)85057-0 ↗
5. A class of non-precious metal composite catalysts for fuel cells10.1038/nature05118 ↗
6. Probing structural effects of pyrolysed CoTMPP-based electrocatalysts for oxygen reduction via new preparation strategies
7. Comparative voltammetric study of methanol oxidation and adsorption on noble metal electrodes in perchloric acid solutions10.1016/0013-4686(62)87051-0 ↗
8. Catalysts for oxygen reduction from heat-treated carbon-supported iron phenanthroline complexes10.1023/A:1014753613345 ↗
9. Oxygen reduction reaction on ruthenium and rhodium nanoparticles modified with selenium and sulfur10.1149/1.2180709 ↗
10. A generalized expression for the Tafel slope and the kinetics of oxygen reduction on noble metals and alloys10.1149/1.2424180 ↗
11. Catalytic activity of titanium oxide for oxygen reduction reaction as a non-platinum catalyst for PEFC10.1016/j.electacta.2006.08.059 ↗
12. A novel methanol-tolerant Ir–Se chalcogenide electrocatalyst for oxygen reduction10.1016/j.jpowsour.2006.11.063 ↗
13. Chalcogenide oxygen reduction reaction catalysis: X-ray photoelectron spectroscopy with Ru, Ru/Se and Ru/S samples emersed from aqueous media10.1016/j.electacta.2007.01.061 ↗
14. Facile synthesis of carbon-supported IrxSey chalcogenide nanoparticles and their electrocatalytic activity for the oxygen reduction reaction
15. Novel synthesis of a highly active carbon-supported Ru85Se15 chalcogenide catalyst for the oxygen reduction reaction10.1016/j.elecom.2007.08.018 ↗
16. Transition metal oxides as DMFC cathodes without platinum10.1149/1.2734880 ↗
17. Origin of the overpotential for oxygen reduction at a fuel-cell cathode10.1021/jp047349j ↗
18. Oxygen reduction on a high-surface area Pt:Vulcan carbon catalyst: A thin-film rotating ring-disk electrode study10.1016/S0022-0728(00)00407-1 ↗
19. Structure and chemical composition of a supported Pt–Ru electrocatalyst for methanol oxidation10.1006/jcat.1995.1151 ↗
20. Comparison of Pd–Co–Au electrocatalysts prepared by conventional borohydride and microemulsion methods for oxygen reduction in fuel cells10.1016/j.elecom.2006.03.022 ↗
21. Cyclic voltammetric studies on iridium electrodes in sulphuric acid solutions: Nature of oxygen layer and metal dissolution10.1016/S0022-0728(74)80431-6 ↗
22. Investigation of some new palladium alloys catalysts for the oxygen reduction reaction in an acid medium
23. Oxygen reduction on Ru1.92Mo0.08SeO4, Ru/carbon and Pt/carbon in pure and methanol-containing electrolytes10.1149/1.1393579 ↗
24. Oxygen reduction at carbon supported ruthenium–selenium catalysts: Selenium as promoter and stabilizer of catalytic activity10.1016/j.jpowsour.2005.03.238 ↗
25. Methanol-resistant cathodic oxygen reduction catalysts for methanol fuel cells10.1023/A:1017575008333 ↗
26. Synthesis and structural characterization of Se-modified carbon-supported Ru nanoparticles for the oxygen reduction reaction10.1021/jp056715b ↗