A solid oxide fuel cell operating on hydrogen sulfide (H2S) and sulfur-containing fuels

Aguilar, Luís Fuentes; Zha, Shaowu; Cheng, Zhe; Winnick, Jack; Liu, Meilin

doi:10.1016/j.jpowsour.2004.03.061

Cited by 185 publications

(131 citation statements)

References 10 publications

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“…lanthanum-doped strontium titanate) reconfirming that titanates can be used for the direct utilization of methane and also found that they are sulfur-tolerant. Strontium-doped lanthanum vanadate (La 0.7 Sr 0.3 VO 3-δ , LSV) has been proposed as an alternative anode and has been tested in H 2 S/H 2 mixtures by Aguilar et al [164,165]. Later studies [157] demonstrated that LSV can be used also for the direct utilization of natural gas with high (10 vol.%) contents of H 2 S.…”

Section: Mixed-conductor Oxides Anodesmentioning

confidence: 99%

Direct Utilization of Liquid Fuels in SOFC for Portable Applications: Challenges for the Selection of Alternative Anodes

2009

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Solid oxide fuel cells (SOFC) have the advantage of being able to operate with fuels other than hydrogen. In particular, liquid fuels are especially attractive for powering portable applications such as small power generators or auxiliary power units, in which case the direct utilization of the fuel would be convenient. Although liquid fuels are easier to handle and transport than hydrogen, their direct use in SOFC can lead to anode deactivation due to carbon formation, especially on traditional nickel/yttria stabilized zirconia (Ni/YSZ) anodes. Significant advances have been made in anodic materials that are resistant to carbon formation but often these materials are less electrochemically active than Ni/YSZ. In this review the challenges of using liquid fuels directly in SOFC, in terms of gas-phase and catalytic reactions within the anode chamber, will be discussed and the alternative anode materials so far investigated will be compared.

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Section: Mixed-conductor Oxides Anodesmentioning

confidence: 99%

Direct Utilization of Liquid Fuels in SOFC for Portable Applications: Challenges for the Selection of Alternative Anodes

2009

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“…Furthermore, this technology offers a flexible selection of fuels, ranging from renewable resources to fossil fuels; for example, biomass and natural gas, respectively (Aguilar et al, 2004;Lu and Schaefer, 2004;Lin et al, 2005;Ahmed and Föger, 2010;Doherty et al, 2010;Danilov et al, 2011a). Fuel cells find use, in commercial or prototype form, as power systems for transportation (buses, ferries, aircraft), in portable consumer (cameras) or military (portable soldier power) devices, in combined heat and power systems, and for standalone power generation for commercial and residential establishments.…”

Section: Introductionmentioning

confidence: 99%

Solid oxide fuel cell reactor analysis and optimisation through a novel multi-scale modelling strategy

Amiri

Vijay

Tadé

et al. 2015

Computers & Chemical Engineering

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“…[6][7][8][9][10][11][12] Furthermore, perovskite based materials possess high resistance to sulfur impurities [13][14][15] and coke formation 5,6,16,17 since both sulfur and carbon species can easily be oxidized at the surface of the perovskite oxide. 18 Among the numerous perovskite systems that have been explored, SrTiO 3 based perovskites have been widely used as alternative SOFC anode materials. 8,9,14,19 Indeed, several research groups have reported that SrTiO 3 based perovskites exhibit some advantages over Ni/YSZ anode catalysts, such as promising mixed ionic/electronic conductivity, adequate thermodynamic stability in a wide range of oxygen partial pressure, and tolerance to sulfur impurities as well as coke formation.…”

Section: Introductionmentioning

confidence: 99%

Density functional theory study on the electronic structure ofn- andp-type doped SrTiO3at anodic solid oxide fuel cell conditions

et al. 2011

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The electronic conductivity and thermodynamic stability of mixed n-type and ptype doped SrTiO 3 have been investigated at anodic solid oxide fuel cell (SOFC) conditions using density functional theory (DFT) calculations. In particular, constrained ab initio thermodynamic calculations have been performed to evaluate the phase stability and reducibility of various Nb-and Ga-doped SrTiO 3 at synthesized and anodic SOFC conditions. The density of states of these materials was analyzed to study the effects of nand p-doping on the electronic conductivity. In agreement with experimental observations, we find that the transformation from 20% Nb-doped Sr-deficient SrTiO 3 to a non Sr-deficient phase occurs at high temperature and low oxygen partial pressure which leads to a significant improvement in electronic conductivity. A mixed ionic/electronic conductor is obtained when doping 20% Nb-doped SrTiO 3 with small amounts of Ga (10%) in a reducing environment and high temperature. Doping with higher concentrations of Ga, e.g., 20%, diminishes the electronic conductivity of the material. These findings suggest that independent of the specific dopant, mixed ionic/electronic conductivity can be obtained in perovskite oxides under reducing 2 conditions and high temperatures by doping the B-site with small amounts of both n-type and p-type dopants.

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A solid oxide fuel cell operating on hydrogen sulfide (H2S) and sulfur-containing fuels

Cited by 185 publications

References 10 publications

Direct Utilization of Liquid Fuels in SOFC for Portable Applications: Challenges for the Selection of Alternative Anodes

Direct Utilization of Liquid Fuels in SOFC for Portable Applications: Challenges for the Selection of Alternative Anodes

Solid oxide fuel cell reactor analysis and optimisation through a novel multi-scale modelling strategy

Density functional theory study on the electronic structure ofn- andp-type doped SrTiO3at anodic solid oxide fuel cell conditions

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