Radio-frequency magnetron sputtered thin-film La0.5Sr0.5Co0.95Nb0.05O3-δ perovskite electrodes for intermediate temperature symmetric solid oxide fuel cell (IT-SSOFC)

Dhongde, Vicky; Singh, Aditya; Kala, Jyotsana; Anjum, Uzma; Haider, M. Ali; Basu, Suddhasatwa

doi:10.1016/j.matre.2022.100095

Cited by 13 publications

(12 citation statements)

References 67 publications

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“…37 Raman spectra of V o -In 2 O 3 showed a much lower intensity than those of P′- XPS was used to determine the surface chemical composition, the chemical state of the elements, and the O vac concentration in the prepared electrocatalysts (Section S2). 41,42 The deconvoluted O 1s XPS peak for both P′-In 2 O 3 and V o -In 2 O 3 showed the presence of lattice oxygen (O latt ) and a surface hydroxyl group (−OH) 43 (Figure S7c,d). An additional peak associated with an auxiliary oxidation state of the O atom closer to the O vacancies was designated as O vac (531.6 eV for V o -In 2 O 3 ).…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…XPS was used to determine the surface chemical composition, the chemical state of the elements, and the O vac concentration in the prepared electrocatalysts (Section S2). , The deconvoluted O 1s XPS peak for both P′-In 2 O 3 and V o -In 2 O 3 showed the presence of lattice oxygen (O latt ) and a surface hydroxyl group (−OH) (Figure S7c,d). An additional peak associated with an auxiliary oxidation state of the O atom closer to the O vacancies was designated as O vac (531.6 eV for V o -In 2 O 3 ). , The decrease (a positive shift of 0.2 eV) in the binding energies of the In(III)-3d 5/2 and In(III)-3d 3/2 peaks was attributed to the formation of O vac and subsequent charge transfer to In (Figure S7a,b).…”

Section: Resultsmentioning

confidence: 99%

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Tuning Product Selectivity during Electrocatalytic Hydrogenation of Biomass-Derived Furfural through Oxygen Vacancy Control in Metal Oxides

Dixit,

Gayen,

Saha

et al. 2024

Ind. Eng. Chem. Res.

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Electrochemical hydrogenation (ECH) of biomass-derived compounds is one of the clean routes to produce biofuels. Here, we studied the less-explored technique of ECH of biomass-derived furfural in alkaline medium using metal oxide (In 2 O 3 , Co 3 O 4 , and Pb 2 Ru 2 O 7−x ) electrocatalysts to generate furfuryl alcohol (FA) and hydrofuroin (HF). The FA selectivity over HF (S FA/HF ) was found to be maximum for P′-Pb 2 Ru 2 O 7−x , whose FA formation rate (R FA ) (201.3 ± 5.6 μmol h −1 cm −2 , 154.9 ± 5.8 mmol h −1 g cat −1) in the ambient condition (25 °C, 0.1 MPa) was higher than the R FA obtained via thermal catalytic hydrogenation (100−180 °C, 1−3 MPa). Through experimental and theoretical studies, we demonstrated that the binding energy and coverage of competing furfural and hydrogen adsorption processes determined the S FA/HF . Oxygen vacancy formation on the metal oxide surface promoted hydrogen adsorption, resulting in a maximum of S FA/HF followed by a decrease due to the parasitic hydrogen evolution reaction. The study paves the way for the development of bioelectro-refineries.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Tuning Product Selectivity during Electrocatalytic Hydrogenation of Biomass-Derived Furfural through Oxygen Vacancy Control in Metal Oxides

Dixit,

Gayen,

Saha

et al. 2024

Ind. Eng. Chem. Res.

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“…While much significant progress and extensive studies have been made, there is a trend towards developing SSOFC with Co‐free and carbon‐tolerant redox electrodes, 82 as well as developing new novel materials for SSOFC application. MIEC remains the most dominating material for SSOFC 83 production with the ongoing comprehensive studies and research towards improving the microstructure of the electrodes 84 and modifying the base materials to improve the cell performance 15 …”

Section: Characteristics and Development Of Electrode Materials In Ssofcmentioning

confidence: 99%

Recent advances in electrode material for symmetrical solid oxide fuel cells and way forward sustainability based on local mineral resources

Harashid

Chen

Ahmad

et al. 2022

Intl J of Energy Research

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Summary Solid oxide fuel cells (SOFCs) are eco‐friendly and yet highly efficient power generation devices. However, SOFCs face some commercial issues with durability, reliability, sustainability, and fabrication costs. In recent years, a unique design idea of symmetrical cell configuration of SOFCs with similar anode and cathode materials, commonly known as SSOFC or SFC has piqued the interest among researchers. The present review article attempts to comprehensive reported research related to the current development of new and promising advances in SSOFCs. Until now, most research on SSOFCs has focused on identifying appropriate materials for the system configuration electrodes. The progress and advances in structures and electrode materials for SSOFCs are summarised here. The electrical and electrochemical behaviours of SSOFCs as well as the performance comparisons with the common conventional SOFCs, in the aspect of electrode materials, are analysed and discussed. This review article provides a comprehensive data source for further investigation and exploration related to this topic towards sustainable, low‐cost, and viable commercialisation of this green fuel cell, especially by utilising local minerals from one's country.

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“…In recent years, solid oxide fuel cells (SOFCs) have received extensive attention in many energy conversion devices, which can realize highly effective energy conversion from chemistry into electricity without the Carnot cycle. − However, the challenges of high cost and poor stability at high temperatures (>850 °C) inhibit the development of SOFCs . Lowering the operation temperature to below 600 °C is the development trend of SOFCs in the future, significantly enhancing the operation stability and reducing materials’ cost.…”

Section: Introductionmentioning

confidence: 99%

High-Performance and Robust Composite Cathode via W Doping-Induced Phase Separation for Proton Ceramic Fuel Cells

Cao,

Wang,

Qiu

et al. 2024

Energy Fuels

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The development and commercialization of proton ceramic fuel cells (PCFCs) are greatly limited due to the lack of suitable cathode materials with a highly active oxygen reduction reaction (ORR) and robust operational stability. Herein, a composite cathode SrCo 0.8 Fe 0.15 W 0.05 O 3−δ (SCFW0.05), consisting of the main single-perovskite (SP) phase and minor double-perovskite (DP) phase, is successfully proposed via a small amount (5%) of W dopinginduced phase separation based on SrCo 0.8 Fe 0.2 O 3−δ (SCF). Consequently, the oxygen surface exchange, diffusion, and proton uptake capacity of the composite are expected to be enhanced under the synergistic effect between multiphases, leading to the electrochemical performance improvement of SCFW0.05. Experimentally, the SCFW0.05 composite cathode demonstrates a low area-specific resistance (ASR) of 0.74 Ω cm 2 on the BaZr 0.1 Ce 0.7 Y 0.1 Yb 0.1 O 3−δ (BZCYYb) electrolyte and operates stably for more than 400 h at 600 °C. Moreover, the PCFCs with the SCFW0.05 composite cathode obtain an excellent peak power density (PPD) value as high as 500 mW cm −2 at 600 °C. The new strategy of W doping-induced phase separation can pave the way to exploring the advanced self-assembled cathodes for PCFCs.

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Radio-frequency magnetron sputtered thin-film La0.5Sr0.5Co0.95Nb0.05O3-δ perovskite electrodes for intermediate temperature symmetric solid oxide fuel cell (IT-SSOFC)

Cited by 13 publications

References 67 publications

Tuning Product Selectivity during Electrocatalytic Hydrogenation of Biomass-Derived Furfural through Oxygen Vacancy Control in Metal Oxides

Tuning Product Selectivity during Electrocatalytic Hydrogenation of Biomass-Derived Furfural through Oxygen Vacancy Control in Metal Oxides

Recent advances in electrode material for symmetrical solid oxide fuel cells and way forward sustainability based on local mineral resources

High-Performance and Robust Composite Cathode via W Doping-Induced Phase Separation for Proton Ceramic Fuel Cells

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