Synthesis and characterisation of ceramic proton conducting perovskite-type multi-element-doped Ba0.5Sr0.5Ce1−−−Zr Gd Y O3−δ (0 &lt; x &lt; 0.5; y = 0, 0.1, 0.15; z = 0.1, 0.2)

Singh, Kalpana; Kannan, R.; Thangadurai, Venkataraman

doi:10.1016/j.ijhydene.2016.05.089

Cited by 19 publications

(15 citation statements)

References 52 publications

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“…As in the previous report, 31 it has been shown that there is a possibility that Ni might substitute Zr site during mechanical mixing or firing at high temperatures owing to their similar ionic radii (rZr 4+ = 0.72 Å, rNi 2+ = 0.69 Å). Figure 1b shows the magnified PXRD pattern where it can be seen that there is very slight shift of BSCZGY (110) peak to high 2θ after firing, which indicates slight or no substitution of Ni in the Zr/Ce site of BSCZGY, indicating no change in stoichiometry of BSCZGY electrolyte.…”

Section: Resultssupporting

confidence: 69%

High Performance Tubular Solid Oxide Fuel Cell Based on Ba_0.5Sr_0.5Ce_0.6Zr_0.2Gd_0.1Y_0.1O_3-δProton Conducting Electrolyte

Amiri

Singh

Sandhu

et al. 2018

J. Electrochem. Soc.

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In this work, synthesis and characterization of an anode supported tubular solid oxide fuel cell based on Ba 0.5 Sr 0.5 Ce 0.6 Zr 0.2 Gd 0.1 Y 0.1 O 3-δ (BSCZGY) electrolyte has been investigated. Anode-supported Ni -yttria-stabilized zirconia (YSZ) anode was fabricated via slip casting; BSCZGY electrolyte and BSCZGY -La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3 (LSCF) composite cathode were coated on support using dip coating, respectively. The chemical compatibility of fuel cell components at sintering temperatures has been investigated by powder X-ray diffraction, and no severe reactions were detected. Electrochemical examination under air/H 2 + 3 vol. % H 2 O showed superior performance achieving a maximum power density of 1 W/cm 2 at 850 • C, among the best compared to tubular -geometry oxygen conductor solid oxide fuel cells reported earlier and one of the highest reported for a proton conductor electrolyte in literature. Electrochemical impedance spectroscopy was used to examine the electrochemical performance of the full cell at different temperatures, and a detailed analysis was done to distinguish the contribution of ohmic and polarization resistances of the cell. ASR values were 3.47 .cm 2 , 1.81 .cm 2 , 1.23 .cm 2 , and 1.05 .cm 2 at 600, 700, 800, and 850 • C, respectively. Analysis of activation energy associated with charge and mass transfer based on fitting of impedances revealed that concentration polarization is the major contributor to the total resistance. The long-term stability for more than 96 hours of operation under load showed no significant degradation, which demonstrated the steady behavior of the cell. A solid oxide fuel cell (SOFC) is a solid-state electrochemical device which converts the chemical energy stored in the fuel directly into electrical energy resulting in high efficiency which along with low environmental impact, quiet operation, and low maintenance makes SOFC highly suitable for stationary power generation applications. 1Traditional SOFCs employ Ni-YSZ cermet, oxide-ion conducting yttria-stabilized zirconia (YSZ), and lanthanum strontium manganite as the anode, electrolyte and cathode, respectively.2 To reduce the overpotentials associated with these materials, the cell needs to run at elevated temperatures near 1000• C. 3 This negatively affects the choice of available materials mostly for interconnects and sealants and their long-term stability. 4 To reduce the operating temperature of SOFC, one of the alternative is to develop new materials for cell components. Oxide ion conducting electrolytes La 0.9 Sr 0.1 Ga 0.

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Section: Resultssupporting

confidence: 69%

High Performance Tubular Solid Oxide Fuel Cell Based on Ba_0.5Sr_0.5Ce_0.6Zr_0.2Gd_0.1Y_0.1O_3-δProton Conducting Electrolyte

Amiri

Singh

Sandhu

et al. 2018

J. Electrochem. Soc.

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“…was demonstrated to be a feasible method to increase oxygen vacancy concentration. Singh et al [90] investigated the chemical stability of Ba 0.5 Sr 0. [91] reported a triple-perovskite Sr 3 CaZr 0.5 Ta 1.5 O 8.75 as a proton-conducting oxide.…”

Section: Lt-pcc Materials Perovskite Typementioning

confidence: 99%

Review: recent progress in low-temperature proton-conducting ceramics

et al. 2019

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Proton-conducting ceramics (PCCs) are of considerable interest for use in energy conversion and storage applications, electrochemical sensors, and separation membranes. PCCs that combine performance, efficiency, stability, and an ability to operate at low temperatures are particularly attractive. This review summarizes the recent progress made in the development of low-temperature protonconducting ceramics (LT-PCCs), which are defined as operating in the temperature range of 25-400°C. The structure of these ceramic materials, the characteristics of proton transport mechanisms, and the potential applications for LT-PCCs will be summarized with an emphasis on protonic conduction occurring at interfaces. Three temperature zones are defined in the LT-PCC operating regime based on the predominant proton transfer mechanism occurring in each zone. The variation in material properties, such as crystal structure, conductivity, microstructure, fabrication methods required to achieve the requisite grain size distribution, along with typical strategies pursued to enhance the proton conduction, is addressed. Finally, a perspective regarding applications of these materials to low-temperature solid oxide fuel cells, hydrogen separation membranes, and emerging areas in the nuclear industry including off-gas capture and isotopic separations is presented.

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“…Moreover, the chemical stability improved slightly for the Ca‐ or Sr‐substituted materials due to the decreased basicity of these ions. As a result, joint modification of both A and B sublattices in Ba(Ce,Zr)O 3 has been successfully used to from new highly stable electrolytes with predominant proton conductivity in the past few years …”

Section: Functional Materials Of Proton‐conducting Socsmentioning

confidence: 99%

Gas Humidification Impact on the Properties and Performance of Perovskite‐Type Functional Materials in Proton‐Conducting Solid Oxide Cells

Wang

Medvedev

Shao

2018

Adv Funct Materials

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Fuel cells and electrolysis cells as important types of energy conversiondevices can be divided into groups based on the electrolyte material. However, solid oxide cells (SOCs) based on conventional oxygen-ion conductors are limited by several issues, such as high operating temperature, the difficulty of hydrogen purification from water, and inferior stability. To avoid these problems, proton-conducting oxides are proposed as electrolytes for SOCs in electrolysis and fuel cell modes. Since water vapor partial pressure (pH 2 O) is one of the main parameters determining the proton concentration in proton-conducting oxides (characteristics of which can be either improved or deteriorated), the pH 2 O control is extremely important for the optimization of the devices' performance and stability. This review provides an overview of the research progresses made for proton-conducting SOCs, especially for the impact of gas humidification on the operability and performance. Fundamental understanding of the main processes in proton-conducting SOCs and design principles for the key components are summarized and discussed. The trends, challenges, and future directions that exist in this dynamic field are also pointed out. This review will inspire interest from various disciplines and provide some useful guidelines for future development of proton-conductor-based energy storage and conversion systems.

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Synthesis and characterisation of ceramic proton conducting perovskite-type multi-element-doped Ba0.5Sr0.5Ce1−−−Zr Gd Y O3−δ (0 < x < 0.5; y = 0, 0.1, 0.15; z = 0.1, 0.2)

Cited by 19 publications

References 52 publications

High Performance Tubular Solid Oxide Fuel Cell Based on Ba_0.5Sr_0.5Ce_0.6Zr_0.2Gd_0.1Y_0.1O_3-δProton Conducting Electrolyte

High Performance Tubular Solid Oxide Fuel Cell Based on Ba_0.5Sr_0.5Ce_0.6Zr_0.2Gd_0.1Y_0.1O_3-δProton Conducting Electrolyte

Review: recent progress in low-temperature proton-conducting ceramics

Gas Humidification Impact on the Properties and Performance of Perovskite‐Type Functional Materials in Proton‐Conducting Solid Oxide Cells

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Synthesis and characterisation of ceramic proton conducting perovskite-type multi-element-doped Ba0.5Sr0.5Ce1−−−Zr Gd Y O3−δ (0 < x < 0.5; y = 0, 0.1, 0.15; z = 0.1, 0.2)

Cited by 19 publications

References 52 publications

High Performance Tubular Solid Oxide Fuel Cell Based on Ba0.5Sr0.5Ce0.6Zr0.2Gd0.1Y0.1O3-δProton Conducting Electrolyte

High Performance Tubular Solid Oxide Fuel Cell Based on Ba0.5Sr0.5Ce0.6Zr0.2Gd0.1Y0.1O3-δProton Conducting Electrolyte

Review: recent progress in low-temperature proton-conducting ceramics

Gas Humidification Impact on the Properties and Performance of Perovskite‐Type Functional Materials in Proton‐Conducting Solid Oxide Cells

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Product

Resources

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High Performance Tubular Solid Oxide Fuel Cell Based on Ba_0.5Sr_0.5Ce_0.6Zr_0.2Gd_0.1Y_0.1O_3-δProton Conducting Electrolyte

High Performance Tubular Solid Oxide Fuel Cell Based on Ba_0.5Sr_0.5Ce_0.6Zr_0.2Gd_0.1Y_0.1O_3-δProton Conducting Electrolyte