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Logvinkov, S. M.; Семченко, Г. Д.; Kobyzeva, D. A.; Babushkin, V. I.

doi:10.1023/a:1015087606871

Cited by 7 publications

(3 citation statements)

References 2 publications

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“…From thermodynamics (K = e -ΔGo/(RT) ) and kinetics (k = Ae -Ea/(RT) ) points of view, [27,28] to form a new solid phase through the solid-state reaction (Figure S2, Supporting Information), high reaction kinetics could be expected at high temperatures, profiting from the lifted driving force to expedite the solid reaction processes. In other words, if the system could bypass the low-efficiency reacting region and directly go into the high-efficiency reacting region, there stands a good chance to acquire the desired phase rapidly.…”

Section: Introductionmentioning

confidence: 99%

Rapid Fabrication of Electrodes for Symmetrical Solid Oxide Cells by Extreme Heat Treatment

Fan,

Sun,

Wang

et al. 2024

Energy & Environ Materials

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Symmetrical solid oxide cells (SSOCs) are very useful for energy generation and conversion. To fabricate the electrode of SSOC, it is very time‐consuming to use the conventional approach. In this work, we design and develop a novel method, extreme heat treatment (EHT), to rapidly fabricate electrodes for SSOC. We show that by using the EHT method, the electrode can be fabricated in seconds (the fastest method to date), benefiting from enhanced reaction kinetics. The EHT‐fabricated electrode presents a porous structure and good adhesion with the electrolyte. In contrast, tens of hours are needed to prepare the electrode by the conventional approach, and the prepared electrode exhibits a dense structure with a larger particle size due to the lengthy treatment. The EHT‐fabricated electrode shows desirable electrochemical performance. Moreover, we show that the electrocatalytic activity of the perovskite electrode can be tuned by the vigorous approach of fast exsolution, deriving from the increased active sites for enhancing the electrochemical reactions. At 900 °C, a promising peak power density of 966 mW cm−2 is reached. Our work exploits a new territory to fabricate and develop advanced electrodes for SSOCs in a rapid and high‐throughput manner.

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Section: Introductionmentioning

confidence: 99%

Rapid Fabrication of Electrodes for Symmetrical Solid Oxide Cells by Extreme Heat Treatment

Fan,

Sun,

Wang

et al. 2024

Energy & Environ Materials

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“…Generally, exsolution could take place under the occurrence of phase decomposition of the parent perovskites and/or generation of oxygen vacancies without structure decomposition. [ 25 , 26 , 27 ] Moreover, for different types of perovskites, the driving force required to induce the exsolution is different due to the different reducibility. [ 28 , 29 ] From thermodynamics and kinetics points of view, to trigger the exsolution from perovskite oxides, the driving force can be provided by the thermal potential ( T ).…”

Section: Introductionmentioning

confidence: 99%

A Flexible Method to Fabricate Exsolution‐Based Nanoparticle‐Decorated Materials in Seconds

2022

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Decorating metallic nanoparticles on the surface of oxide support is a promising approach to tailor the catalytic activity of perovskite. Here, for the first time using thermal shock to rapidly fabricate nanoparticle‐decorated materials (NDMs) is proposed. Low‐cost and size‐tailorable carbon paper is used as the heating source during the thermal shock. It is reported that by thermal shock technique, only ≈13 s including heating and treating time is needed to fabricate the exsolution‐based NDMs (the fastest method to date). Benefitted by the sufficiently provided driving force and the short treating time, as compared to the product prepared by the conventionally furnace‐based method, higher particle density and smaller particle size of the exsolved catalysts are acquired for the thermal shock fabricated NDM, giving rise to a fascinating improvement (12‐fold) of the electrochemical performance. This work develops a new technique to rapidly fabricate NDMs in an economic and high‐throughput manner, profoundly improving the flexibility of the application of exsolution‐based materials in electrochemical devices.

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“…Logvinkov et al [6] reported that the change in the crystal lattice of cordierite should be considered as changes arising from composition solid solution rather than phase transformation due to thermodynamic instability of cordierite. Additionally, Torres and Alarcon [7] mentioned that the initial crystalline phase form was cordierite within μ-cobalt and after annealing it transformed to α-cordierite.…”

Section: Introductionmentioning

confidence: 99%

Influence of Sintering Temperature on Crystallization Behavior of Cordierite synthesized from Non-Stoichiometric Formulation

Eing

Banjuraizah

et al. 2016

MATEC Web Conf.

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Abstract. Cordierite body with formulation of non-stoichiometric composition (2.5 MgO. 1.8 Al 2 O 3. 5 SiO 2 ) was synthesized using conventional techniques with standard raw materials. The sintering and crystallization behavior of the compositions was observed by Differential Thermal Analysis and Thermogravimetric Analysis (DTA/TG). The sequence of reaction and phase transformation was analyzed using X-ray Diffraction (XRD) technique and Rietveld structural refinement after sintering the samples at different temperature regarding the information from the DTA. The Scanning electron microscopy (SEM) was employed for morphology analysis. The DTA curve shows the crystallization temperature, T c occur at 1259 o C.Rietveld quantitative phase analysis results reveal that α phase Cordierite constitutes up to 96.4 wt% when the samples was sintered for 2 hours at the optimal temperature of 1375 o C. The SEM micrograph revealed that the sample was heat treated at 1375 o C obtained densified body with well alignment of crystal structure.

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Cited by 7 publications

References 2 publications

Rapid Fabrication of Electrodes for Symmetrical Solid Oxide Cells by Extreme Heat Treatment

Rapid Fabrication of Electrodes for Symmetrical Solid Oxide Cells by Extreme Heat Treatment

A Flexible Method to Fabricate Exsolution‐Based Nanoparticle‐Decorated Materials in Seconds

Influence of Sintering Temperature on Crystallization Behavior of Cordierite synthesized from Non-Stoichiometric Formulation

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