Effect of processing route on the properties of LSCF-based composite cathode for IT-SOFC

Ahuja, Aakash; Gautam, Manoj; Sinha, Amit; Sharma, Jyothi; Patro, P.K.; Venkatasubramanian, Anandram

doi:10.1007/s12034-020-2075-y

Cited by 18 publications

(10 citation statements)

References 19 publications

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“…Table summarizes the LSCF cathode performance prepared by different methods. The obtained LSCF cathode electrochemical impedance of the MFL-F is comparable to those of the cathode prepared through screenprinting, , spin coating, plasma spraying, infiltration, , and other methods …”

Section: Resultsmentioning

confidence: 99%

Boosting and Robust Multifunction Cathode Layer for Solid Oxide Fuel Cells

Zheng

Jing

et al. 2022

ACS Sustainable Chem. Eng.

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Designing an efficient cathode and an accelerating sluggish oxygen reduction reaction (ORR) process are crucial to enhancing electrochemical outputs for solid oxide fuel cells (SOFCs). A novel multifunction layer (MFL) cathode that combines the Gd 0.2 Ce 0.8 O 2−δ (GDC) interlayer with a La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3-δ (LSCF) cathode functional layer is reported. After precisely controlling the concentration of an infiltration precursor solution, discrete and filmy LSCF on the GDC scaffold (MFL-D and MFL-F) can be prepared. Compared with the discrete-coating of LSCF (MFL-D), the film-like coating of LSCF (MFL-F) exhibits a lower initial polarization impedance of 0.093 Ω cm 2 at 750 °C. The as-obtained SOFCs produce an enhanced peak power density of 0.93 W cm −2 and have successfully been operated at 0.5 A cm −2 for 400 h with a voltage degradation of only 16 mV. Oxygen ion transport model of the MFL-F is constructed and discussed. This work provides an important insight into designing efficient cathode for SOFCs.

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Section: Resultsmentioning

confidence: 99%

Boosting and Robust Multifunction Cathode Layer for Solid Oxide Fuel Cells

Zheng

Jing

et al. 2022

ACS Sustainable Chem. Eng.

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“…GDC shows a cubic uorite structure (JCPDS #75-0162) and LSCF exhibits a perovskite structure (JCPDS #49-0284), which are consistent with the results of previous works without any impure phases. [33][34][35][36] The cross-sectional SEM image of the anode support and anode functional layers sintered at 1400 C is shown in Fig. 1b.…”

Section: Characterization Of Synthesized Powders and Aflmentioning

confidence: 99%

Solid oxide fuel cell with a spin-coated yttria stabilized zirconia/gadolinia doped ceria bi-layer electrolyte

Fan

Hou

et al. 2022

RSC Adv.

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“…The cathodic ORR performance is very much dependent on cathode material, oxygen ion conductivity, electrode thickness, and so on, 16–19 among which the cathode thickness can largely affect the electrocatalytic activity towards ORR via coordination and matching each process of ORR on the porous cathode surface and bulk. Moreover, a certain cathode thickness is needed to effectively avert the reduction of reaction sites and prevent excessive loss of concentration 20–25 …”

Section: Introductionmentioning

confidence: 99%

“…Moreover, a certain cathode thickness is needed to effectively avert the reduction of reaction sites and prevent excessive loss of concentration. [20][21][22][23][24][25] Researchers have studied the thickness-dependent effects of electrocatalytic activities of some cathodes. [26][27][28][29] For example, Barbucci et al investigated the electrochemical impedances of LSM-YSZ (yttria-stabilized zirconia) composite cathodes with various thicknesses.…”

Section: Introductionmentioning

confidence: 99%

Thickness‐dependent high‐performance solid oxide fuel cells with Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3‐δ cathode

Qiu

Jiang

Niu

et al. 2022

Asia-Pacific J Chem Eng

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The electrochemical performance of solid oxide fuel cells (SOFCs) is highly reliant upon the properties of cathodes, including crystal structure, electrical conductivity, electrode thickness, and so on. Here, Ba 0.5 Sr 0.5 Co 0.8 Fe 0.2 O 3-δ (BSCF) is synthesized and served as the electrode for enabling highperformance SOFCs. The effect of electrode thickness on the electrocatalytic activity is systematically investigated. The electrode thickness is adjusted in two ways. One is spray-coating and then calcining once, and the other is performing the above process twice. On the basis of symmetrical cells configuration, the oxygen reduction reaction (ORR) activity of BSCF electrode with different thickness is evaluated and analyzed by the electrochemical impedance spectroscopy (EIS) technique and distribution of relaxation time (DRT).The obtained area-specific resistances (ASRs) of electrodes on the oxygen ion conducting electrolyte Sm 0.2 Ce 0.9 O 1.90 (SDC) demonstrate the thicknessdependent electrochemical activity in ORR of BSCF electrode. With an electrode thickness of 24 μm that controlled by conducting "spray-coating and calcining" twice, the BSCF electrode displays the optimal electrochemical performance with an ASR of 0.072 Ω cm 2 in ambient air at 600 C. This strategy has allowed us to produce an electrode layer with optimal thickness, paving a new path for the design of high-performance SOFCs.

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Effect of processing route on the properties of LSCF-based composite cathode for IT-SOFC

Cited by 18 publications

References 19 publications

Boosting and Robust Multifunction Cathode Layer for Solid Oxide Fuel Cells

Boosting and Robust Multifunction Cathode Layer for Solid Oxide Fuel Cells

Solid oxide fuel cell with a spin-coated yttria stabilized zirconia/gadolinia doped ceria bi-layer electrolyte

Thickness‐dependent high‐performance solid oxide fuel cells with Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3‐δ cathode

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Effect of processing route on the properties of LSCF-based composite cathode for IT-SOFC

Cited by 18 publications

References 19 publications

Boosting and Robust Multifunction Cathode Layer for Solid Oxide Fuel Cells

Boosting and Robust Multifunction Cathode Layer for Solid Oxide Fuel Cells

Solid oxide fuel cell with a spin-coated yttria stabilized zirconia/gadolinia doped ceria bi-layer electrolyte

Thickness‐dependent high‐performance solid oxide fuel cells with Ba0.5Sr0.5Co0.8Fe0.2O3‐δ cathode

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Product

Resources

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Thickness‐dependent high‐performance solid oxide fuel cells with Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3‐δ cathode