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Mixed iridium-nickel oxides supported on antimony-doped tin oxide as highly efficient and stable acidic oxygen evolution catalysts

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Materials Futures 2024年第1期3卷 165-180页

作者： Jonathan Ruiz Esquius Alec P LaGrow Haiyan Jin Zhipeng Yu Ana Araujo Rita Marques Adélio Mendes Lifeng Liu Clean Energy Cluster International Iberian Nanotechnology LaboratoryAv.Mestre JoséVeigaBraga 4715-330Portugal Carbon Science and Technology Institute INCAR-CSICFrancisco Pintado Fe 26Oviedo 33011Spain Scientific Imaging Section Okinawa Institute of Science and Technology Graduate UniversityKunigami-gunOkinawa 904-0412Japan Songshan Lake Materials Laboratory Dongguan 523808People’s Republic of China Laboratory for Process Engineering EnvironmentBiotechnology and EnergyFaculty of EngineeringUniversity of PortoRua Dr Roberto FriasPorto 4200-465Portugal Associate Laboratory in Chemical Engineering Faculty of EngineeringUniversity of PortoRua Dr Roberto FriasPorto 4200-465Portugal.

Proton exchange membrane(PEM)water electrolysis represents a promising technology for green hydrogen production,but its widespread deployment is greatly hindered by the indispensable usage of platinum group metal catalysts,especially iridium(Ir)based materials for the energy-demanding oxygen evolution reaction(OER).Herein,we report a new sequential precipitation approach to the synthesis of mixed Ir-nickel(Ni)oxy-hydroxide supported on antimony-doped tin oxide(ATO)nanoparticles(IrNiyO_(x)/ATO,20 wt.%(Ir+Ni),y=0,1,2,and 3),aiming to reduce the utilisation of scarce and precious Ir while maintaining its good acidic OER *** tested in strongly acidic electrolyte(0.1 M HClO_(4)),the optimised IrNi1Ox/ATO shows a mass activity of 1.0 mAµgIr^(−1) and a large turnover frequency of 123 s^(−1) at an overpotential of 350 mV,as well as a comparatively small Tafel slope of 50 mV dec^(−1),better than the IrOx/ATO control,particularly with a markedly reduced Ir loading of only 19.7µgIr cm^(−2).Importantly,IrNi1O_(x)/ATO also exhibits substantially better catalytic stability than other reference catalysts,able to continuously catalyse acidic OER at 10 mA cm^(−2) for 15 h without obvious *** in-situ synchrotron-based x-ray absorption spectroscopy confirmed that the Ir^(3+)/Ir^(4+)species are the active sites for the acidic ***,the performance of IrNi1Ox/ATO was also preliminarily evaluated in a membrane electrode assembly,which shows better activity and stability than other reference *** IrNi1Ox/ATO reported in this work is a promising alternative to commercial IrO_(2) based catalysts for PEM electrolysis.

关键词： mixed oxides oxygen evolution reaction polymer electrolyte membrane antimony doped tin oxide membrane electrode assembly

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High-performance Sb:SnO_2 Compact Thin Film Based on Surfactant-free and Binder-free Sb:Sn_3O_4 Suspension

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Journal of Materials Science & Technology 2015年第8期31卷 815-821页

作者： Junhua Zhao Ruiqin Tan Ye Yang Wei Xu Jia Li Wenfeng Shen Guoqiang Wu Xufeng Yang Weijie Song College of Chemical and Material Engineering Quzhou University Faculty of Information Science and Engineering Ningbo University Ningbo Institute of Material Technology and Engineering Chinese Academy of Sciences

Surfactant-free and binder-free antimony-doped tin oxide （ATO） transparent conducting thin films were fabricated through spin coating and rapid annealing processes, in which nanosheets were assembled into a compact structure via self-contracting high pressure. The mechanism of this compact thin film for- mation was further proposed and analyzed. The compact ATO thin film had a low root mean square （RMS） roughness of 5.03 nm. This surfactant-free and binder-free compact ATO thin film delivered low resistivity of 3.04 × 10^-2 Ω cm, stable resistivity which only increased 13% after exposing in 65% RH air for half a month, high transmittance of 92.70% at 550 nm, and high band gap energy of 4.07 eV. This effective strategy will provide new insight into the synthesis of low-cost and high-performance compact thin films.

关键词： antimony doped tin oxide Compact thin film Sn3O4 suspension Electrical properties Optical properties

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Electrical and Mechanical Properties of PMMA/nano-ATO Composites

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Journal of Materials Science & Technology 2009年第2期25卷 247-250页

作者： Wei Pan Huiqin Zhang Yan Chen Institute of Materials and Chemical Engineering Zhongyuan University of Technology Zhengzhou 450007 China

Conducting nanocomposites of poly （methyl methacrylate）（PMMA） and antimony doped tin oxide （ATO） were prepared by solution blending. The influences of ATO content on the electrical conductivity, thermal stability, and mechanical properties of the nanocomposites were investigated. A homogeneous dispersion of silane coupling agent modified ATO was achieved in PMMA matrix as evidenced by scanning electron microscopy. The resultant PMMA/silane-ATO nanocomposites were electrically conductive with significant conductivity enhancement at 4 wt pct. It was found that the composition at 4 wt pct ATO gave the higher tensile strength. Furthermore, it gave the largest elongation at break value among all the compositions. Thermal stability of the nanocomposites was remarkably enhanced by the incorporation of silane-ATO.

关键词： antimony doped tin oxide PiVIMA Nanocomposites Structure and properties

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Preparation and characterization of poly(ethylene terephthalate) nanocomposite fiber

Preparation and characterization of poly(ethylene terephthal...

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中国工程院第77场工程科技论坛·2008水产科技论坛——渔业现代化与可持续发展

作者： CHEN Xiao-lei,LIU Yong-li,SHI Jian-gao,WANG Lu-min,SHI Hang (East China Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences,Key & Open Laboratory of Marine and Estuarine Fisheries,Ministry of Agriculture,Shanghai 200090,China)

Poly(ethylene phthalate)(PET)/nano-antimony doped tin oxide(ATO)composites prepared via in situ polymerization were spun into fiber by the melt spinning *** with the neat PET,the tenacity of PET/ATO hybrid fibers was improved,and PET/ATO hybrid fibers had a lower elongation at break by adding *** ATO nanoparticles improved the thermal stability of PET *** WAXD and DSC results suggested that ATO nanoparticles increase the degree of crystallinity of PET acting as the nucleating agent,which prohibited the thermal shrinkage of PET fiber.

关键词： fibers nanocomposites poly(ethylene terephthalate) thermal stability antimony doped tin oxide

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