Electrochemical performance and structural durability of Mg-doped SmBaMn2O5+δ layered perovskite electrode for symmetrical solid oxide fuel cell

Zhang, Yang; Zhang, Binze; Zhao, Hailei; Świerczek, Konrad; Du, Zhenmin; Li, Yuanyuan; Li, Xu; Li, Hui

doi:10.1016/j.cattod.2020.05.057

Cited by 20 publications

(8 citation statements)

References 23 publications

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“…The doping effect on the hydrogen reduction reaction is also analyzed by the DRT method (Figure b 3 ). Three peaks correspond to hydrogen adsorption–vapor desorption, charge transfer with hydrogen dissociation, and ionic transport for the anode hydrogen oxidation reaction from low to high frequency, respectively. − At 750 °C, doping W reduces the P2 area by 24% from 0.134 to 0.102 Ω·cm 2 and has a slight effect on P1 and P3. Thus, doping W accelerates the charge transfer process.…”

Section: Resultsmentioning

confidence: 99%

Tungsten-Doped PrBaFe₂O_5+δ Double Perovskite as a High-Performance Electrode Material for Symmetrical Solid Oxide Fuel Cells

Zhang

Wan

Hua

et al. 2021

ACS Appl. Energy Mater.

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Double perovskite PrBaFe 2 O 5+δ is a potential electrode material for symmetrical solid oxide fuel cells (Sym-SOFCs). This work aims to improve the Sym-SOFC performance by partially replacing Fe with W, forming a composition of (PrBa) 0.95 (Fe 0.95 W 0.05 ) 2 O 5+δ . Doping W keeps PrBaFe 2 O 5+δ stability after high-temperature treatment in both air and hydrogen atmospheres, decreases the thermal expansion coefficient from 17.11 × 10 −6 to 14.59 × 10 −6 K −1 , increases the content of oxygen species that are essential for the electrocatalytic reactions, and increases the chemical oxygen surface exchange coefficient by 121% at 800 °C. Consequently, doping W greatly improves the electrochemical performance, such as decreasing the areaspecific cathode polarization resistance by 35.5% to 0.031 Ω•cm 2 at 800 °C, reducing the anode polarization resistance by 17.7% to 0.123 Ω• cm 2 , and increasing the peak power density of Sym-SOFCs by 32.5% to 1.02 W cm −2 using humidified hydrogen as the fuel. The performance is much higher than those reported for Sym-SOFCs using PrBaFe 2 O 5+δ doped with the other elements. Finally, the Sym-SOFCs are capable of directly using hydrocarbon fuels, providing peak power densities of 0.610, 0.624, and 0.448 W cm −2 at 800 °C for syngas, ethane, and propane, respectively.

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Section: Resultsmentioning

confidence: 99%

Tungsten-Doped PrBaFe₂O_5+δ Double Perovskite as a High-Performance Electrode Material for Symmetrical Solid Oxide Fuel Cells

Zhang

Wan

Hua

et al. 2021

ACS Appl. Energy Mater.

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“…is applied to fit the EIS, where R O is the ohmic resistance, L is the inductor, and (R H Q H ), (R I Q I ), and (R L Q L ) are the resistances and constant phase elements of the elementary process from high frequency to low frequency. 49,50 The fitting plots are shown in Figure 7b and Figure S9a. The Arrhenius plots of R H , R I , and R L show a linear relationship with P Od 2 (Figure 7c), and the fitting results are listed in Table S3.…”

Section: Oxygen Species Analysis and Ecr Measurementmentioning

confidence: 99%

Cobalt-Free Double Perovskite Oxide as a Promising Cathode for Solid Oxide Fuel Cells

Zhang

Han

et al. 2023

ACS Appl. Mater. Interfaces

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Double perovskite oxide PrBaFe 2 O 5+δ is a potential cathode material for intermediate-temperature solid oxide fuel cells. To improve its electrochemical performance, the trivalent element Ga is investigated to partially replace Fe, forming PrBaFe 2−x Ga x O 5+δ (PBFGx, x = 0.05, 0.1, and 0.15). The doping effects on physicochemical properties and electrochemical properties are analyzed regarding the phase structures, element valence states, amount of oxygen vacancies, content of oxygen species, oxygen surface exchange coefficients (k chem ), electrochemical polarization resistance, and single-cell performance. Specifically, PBFG0.1 exhibits improved k chem, such as a 19% improvement from 4.09 × 10 −4 to 4.86 × 10 −4 cm s −1 at 750 °C, due to the increased concentration of reactive oxygen species and oxygen vacancies. Consequently, the interfacial polarization resistance is decreased by 28% from 0.057 to 0.041 Ω cm 2 at 800 °C. The subreaction steps of the oxygen reduction reaction in the PBFG0.1 cathode are further investigated, which suggests that the oxygen dissociation process is greatly enhanced by doping Ga. Meanwhile, doping Ga increases the peak power density of the anode-supported single cell by 36% from 629 to 856 mW cm −2 at 800 °C. The single cell with the PBFG0.1 cathode also exhibits good stability in 100 h of long-term operation at 750 °C.

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“…He works with ceramic membranes possessing mixed ionic-electronic conductivity [124]. He has collaborated with scientists from, inter alia, China [125,126], Japan [127], and the USA [128].…”

Section: Agh University Of Science and Technologymentioning

confidence: 99%

Electrochemistry at Krakowian research institutions

Skibińska

Żabiński

2023

J Solid State Electrochem

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The electrochemistry research team activity from Poland is marked by significant increase in the last 20 years. The joining of European Community in 2004 gives an impulse for the development of Polish science. The development of electrochemistry has been stimulated by cooperation with industry and the establishment of technology transfer centers, technology parks, business incubators, etc. and the mostly by simplified international collaborations. Five research institutions from Krakow reports work in the field of electrochemistry. The achievements of all teams are briefly described.

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Electrochemical performance and structural durability of Mg-doped SmBaMn2O5+δ layered perovskite electrode for symmetrical solid oxide fuel cell

Cited by 20 publications

References 23 publications

Tungsten-Doped PrBaFe₂O_5+δ Double Perovskite as a High-Performance Electrode Material for Symmetrical Solid Oxide Fuel Cells

Tungsten-Doped PrBaFe₂O_5+δ Double Perovskite as a High-Performance Electrode Material for Symmetrical Solid Oxide Fuel Cells

Cobalt-Free Double Perovskite Oxide as a Promising Cathode for Solid Oxide Fuel Cells

Electrochemistry at Krakowian research institutions

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Electrochemical performance and structural durability of Mg-doped SmBaMn2O5+δ layered perovskite electrode for symmetrical solid oxide fuel cell

Cited by 20 publications

References 23 publications

Tungsten-Doped PrBaFe2O5+δ Double Perovskite as a High-Performance Electrode Material for Symmetrical Solid Oxide Fuel Cells

Tungsten-Doped PrBaFe2O5+δ Double Perovskite as a High-Performance Electrode Material for Symmetrical Solid Oxide Fuel Cells

Cobalt-Free Double Perovskite Oxide as a Promising Cathode for Solid Oxide Fuel Cells

Electrochemistry at Krakowian research institutions

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Tungsten-Doped PrBaFe₂O_5+δ Double Perovskite as a High-Performance Electrode Material for Symmetrical Solid Oxide Fuel Cells

Tungsten-Doped PrBaFe₂O_5+δ Double Perovskite as a High-Performance Electrode Material for Symmetrical Solid Oxide Fuel Cells