Performance and life-time behaviour of NiCu–CGO anodes for the direct electro-oxidation of methane in IT-SOFCs

Sin, A.; Kopnin, E.M.; Dubitsky, Y.; Zaopo, A.; Aricò, A.S.; Rosa, Daniela La; Gullo, Laura; Antonucci, V.

doi:10.1016/j.jpowsour.2006.10.078

Cited by 61 publications

(36 citation statements)

References 11 publications

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“…The performance of Ni/YSZ and Ni/GDC as anodes in H/C fueled SOFCs can be improved by dispersing uniformly small amounts of either transition non-noble-metal additives (Sn, Kan et al, 2009;Kan and Lee, 2010a), Cu Hornés et al, 2007;Sin et al, 2007), Mo (Finnerty et al, 1998;An et al, 2011;Niakolas et al, 2013), Bi (Huang et al, 2009), and Fe (Park and Virkar, 2009;da Paz Fiuza et al, 2010;Kan and Lee, 2010b;Fu et al, 2011) or noble-metal dopands (Ru, Hibino et al, 2003;Modafferi et al, 2008), Pd (Nabae et al, 2006(Nabae et al, , 2008Babaei et al, 2009), Rh (Hibino et al, 2002b;Boaro et al, 2010;Ferrandon et al, 2010), Pt (Hibino et al, 2002a), and Au (Yentekakis, 2006;Gavrielatos et al, 2008;Yentekakis et al, 2008), which appear to be effective at intermediate operating temperatures (Rostrup-Nielsen and Alstrup, 1999;Goodenough and Huang, 2007). The aim of these research efforts was to enhance carbon tolerance and maintain catalytic performance through the formation of bimetallic alloys with Ni on the anode.…”

Section: Introductionmentioning

confidence: 99%

Effect of Au and/or Mo Doping on the Development of Carbon and Sulfur Tolerant Anodes for SOFCs—A Short Review

Niakolas

Neofytidis

Neophytides

2017

Front. Environ. Sci.

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HIGHLIGHTS• The kinetics of CH 4 steam reforming and partial oxidation are determined by the oxidation rate of CH x adsorbed species • The modification of the Ni/YSZ and Ni/GDC with Au and/or Au-Mo results in differentiated structures of atomically dispersed Au and/or Au-Mo at the surface and the bulk of the Ni particles.• At lean S/C NiAu/YSZ selectively oxidizes electrochemically the catalytically produced H 2 and CO, while NiAu/GDC is selective to the direct partial electrochemical oxidation of CH 4 to CO and H 2.• The modified electrodes show significant tolerance to C formation.• Au-Mo modification enhances the intrinsic sulfur tolerance properties of Ni/GDC.The presented work is a short review of the research attempts from our group with collaborators, during the last 15 years, which had as main objective to study and improve the electrocatalytic performance of Ni-based electrode materials for the CH 4 Internal steam Reforming process (ISR.) in Solid Oxide Fuel Cells (SOFCs). In particular, NiO/YSZ and NiO/GDC anode powders were modified with Au and/or Mo nano-particles via different preparation methods. These efforts resulted in anode materials with high tolerance and improved electrocatalytic activity under both carbon forming and sulfur poisoning conditions. The most important findings are being reviewed and critical findings are being highlighted 50 as to stress the key differences in the electrocatalytic performance between Ni/YSZ and Ni/GDC. The possible effects of Au and/or Mo addition on the physicochemical and strucutral properties of the cermets are thoroughly discussed as well as active functional layers in the form of anode SOFC electrodes.

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Section: Introductionmentioning

confidence: 99%

Effect of Au and/or Mo Doping on the Development of Carbon and Sulfur Tolerant Anodes for SOFCs—A Short Review

Niakolas

Neofytidis

Neophytides

2017

Front. Environ. Sci.

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“…Opposite to polymer electrolyte fuel cells (PEMFCs), SOFCs do not require noble metals [9], even if the feed of hydrocarbons might bring the risk of carbon formation and deposition over Ni-based catalysts [10,11]. Intermediate temperatures (600-800°C) allow a remarkable simplification in terms of materials and device with the achievement of a high level of stability [12].…”

Section: Introductionmentioning

confidence: 99%

Propane-fed Solid Oxide Fuel Cell Based on a Composite Ni-La-CGO Anode Catalyst

et al. 2010

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A composite Ni-La-Ce 0.8 Gd 0.2 O 2 catalyst was investigated for the autothermal reforming of propane. A stable performance was recorded during a 100 h endurance test with a syngas yield of 85% at 800°C. The catalyst was also investigated as anode for the direct utilization of propane in solid oxide fuel cells (SOFCs). This catalyst appeared less affected by carbon deposition during SOFC operation than conventional Ni-cermets.

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“…Within one mile of the facility, the additional risk was still greater than 100 in a million. 35,800 residents were thus found to have an increased cancer risk between 100 and 500 in a million, increasing their cancer risk by 10-50% above the background impact. Incremental cancer risks of at least 25 in a million were found to be in effect even four miles away from the rail yard, affecting 152,280 residents [8].…”

Section: Introductionmentioning

confidence: 97%

“…Recent research has focused on catalysts that improve reforming efficiency, reduce the concentration of complex hydrocarbons in the reformate, and reduce the propensity for coking within the reformer. This latter effect is a concern within the SOFC as well, and much work is currently underway to replace SOFC nickel-based catalysts with materials less active at promoting carbon deposition [34][35][36][37][38].…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of SOFC–GT freight locomotive fueled by natural gas and diesel with onboard reformation

2015

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h i g h l i g h t sDynamic simulation model of an SOFC-GT-powered locomotive with onboard reformation. A diesel-powered SOFC-GT locomotive is predicted with 52.2% efficiency. A natural gas-powered SOFC-GT locomotive is predicted with 60% efficiency. The saving in CO 2 /NO x is 30.3%/97.7% and 53.8%/97.7% respectively. The natural gas-powered SOFC-GT locomotive has distinctive advantages. a r t i c l e i n f o t r a c tDue to increasing awareness of the deleterious environmental and health effects of diesel combustion emissions, major regulatory action and policy measures are focused on reducing emissions from diesel engines. Freight operations, including rail-based freight transportation, have received special attention as an industry where major change can be affected, especially in neighborhoods located near operations centers. A FORTRAN-based dynamic simulation model of an SOFC-GT (Solid Oxide Fuel Cell-Gas Turbine) system from a prior feasibility study has been adapted to analyze system operation along a representative but demanding route in southern California. In previous simulations with the model, the basic operational feasibility of the system has been demonstrated as well as the in-service operation for pre-reformed fuels. In the current study, the analysis is extended to include reformation of two fuels (diesel and natural gas) onboard the locomotive and analyses of system efficiency, fuel consumption, CO 2 emission, and NO x emission that can be attained through careful thermal integration of the reformer unit. Route-averaged fuel-to-wheels system efficiencies of 60% and 52% are predicted for natural gas and diesel fuel, respectively. Additionally, SOFC-GT operation could provide (1) a reduction approaching 98% in NO x for both fuels; (2) a 54% savings in CO 2 for operation on natural gas; and (3) a 30% CO 2 reduction for operation on diesel fuel compared to state-of-the-art locomotive technology. These gains may be offset by design challenges, especially for the diesel case, due to the requirement for large volumes of water to support the reformation process even for medium-length freight hauling trips.

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Performance and life-time behaviour of NiCu–CGO anodes for the direct electro-oxidation of methane in IT-SOFCs

Cited by 61 publications

References 11 publications

Effect of Au and/or Mo Doping on the Development of Carbon and Sulfur Tolerant Anodes for SOFCs—A Short Review

Effect of Au and/or Mo Doping on the Development of Carbon and Sulfur Tolerant Anodes for SOFCs—A Short Review

Propane-fed Solid Oxide Fuel Cell Based on a Composite Ni-La-CGO Anode Catalyst

Comparative analysis of SOFC–GT freight locomotive fueled by natural gas and diesel with onboard reformation

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