In-situ construction of ceria-metal/titanate heterostructure with controllable architectures for efficient fuel electrochemical conversion

He, Shuai; Li, Meng; Hui, Jianing; Yue, Xiangling

doi:10.1016/j.apcatb.2021.120588

Cited by 26 publications

(15 citation statements)

References 73 publications

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“…Similar structures have been reported on Ni exsolved system where the formation of such overlayers was suggested to enhance the stability of the material. [12] The Small 2023, 19, 2204682 reduction of the titanates contributes to the higher extent of reduction for La 0.52 Ca 0.28 Ni 0.04 Fe 0.04 Ti 0.92 O 3 fibers as shown in the TGA results (Figure 1c).…”

Section: Morphology Characterizationmentioning

confidence: 83%

“…This time-and cost-effective method has been successfully utilized to form various transition metal nanoparticles, including noble metals [7][8][9] and first-row transition metals. [10][11][12] Monometallic nanoparticles exsolved on the host materials have been extensively applied in various chemical and energy conversion processes. [13][14][15] The finely dispersed nanoparticles possess excellent catalytic activities and most importantly, their unique anchored structure on host materials was reported to improve their stability significantly under harsh conditions.However, the exsolution of transition metal cations with mixed-valence has been rarely reported because of their low reducibility and high segregation energy.…”

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confidence: 99%

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Electrochemical Activation Applied to Perovskite Titanate Fibers to Yield Supported Alloy Nanoparticles for Electrocatalytic Application

Liu

Naden

et al. 2022

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catalysis, with the cathode usually working in CO 2 or CO 2 /H 2 O. Thus, the cathode materials for SOECs have to fulfill requirements such as being able to work in an oxygen partial pressure (pO 2 ) higher than that of H 2 but lower than that of air. [4] In principle, cermet Ni-YSZ electrodes can be used as cathode for CO 2 electrolysis but they suffer from high overpotential for CO oxidation and limited redox stability in CO/CO 2 environments. Therefore, traditional deposition and infiltration have been widely used to prepare highly active catalysts for CO 2 SOEC but have typically been limited by the anchorage of synthesized species, size, and distribution of nanoparticles. [5,6] Exsolution has been widely employed to produce heterogeneous catalysts with nanoparticles (NPs) supported on parent materials. This time-and cost-effective method has been successfully utilized to form various transition metal nanoparticles, including noble metals [7][8][9] and first-row transition metals. [10][11][12] Monometallic nanoparticles exsolved on the host materials have been extensively applied in various chemical and energy conversion processes. [13][14][15] The finely dispersed nanoparticles possess excellent catalytic activities and most importantly, their unique anchored structure on host materials was reported to improve their stability significantly under harsh conditions.However, the exsolution of transition metal cations with mixed-valence has been rarely reported because of their low reducibility and high segregation energy. Consequently, sluggish exsolution happened in titanates doped with those cations, for instance, Fe and Mn. [11,16] The segregation of Fe nanoparticles has been reported only in Fe abundant materials, such as Pr 0.

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Section: Morphology Characterizationmentioning

confidence: 83%

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confidence: 99%

Electrochemical Activation Applied to Perovskite Titanate Fibers to Yield Supported Alloy Nanoparticles for Electrocatalytic Application

Liu

Naden

et al. 2022

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“…Especially, the one-pot method has great potential to provide plenty of heterostructure interface for composite cathodes, which has been reported to be capable of enhancing the oxygen reduction reaction (ORR) kinetics. 33–36…”

Section: Introductionmentioning

confidence: 99%

Enhanced oxygen reduction kinetics of IT-SOFC cathode with PrBaCo₂O_5+δ/Gd_0.1Ce_1.9O_2−δ coherent interface

et al. 2022

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“…The studies and applications of in situ exsolution in SOCs are extensive, and the nanoparticle-resulted performance enhancement have been widely reported. [96,97] The exsolution of nano-phases has also been realized in air electrodes and in oxidative environments. Han et al [98] constructed low polarization resistance heterostructures by exsolving NiFe alloy nanoparticles from Sr 0.95 Ti 0.3 Fe 0.6 Ni 0.1 O 3−δ and in situ oxidation and precipitation as (Ni,Fe)O x oxide particles.…”

Section: In Situ Exsolutionmentioning

confidence: 99%

A critical review of key materials and issues in solid oxide cells

Zou

Chen

et al. 2023

Interdisciplinary Materials

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Solid oxide cells (SOCs) are all solid ceramic devices with the dual functionality of solid oxide fuel cells (SOFCs) to convert the chemical energy of fuels like H2, natural gas and other hydrocarbons to electricity and of solid oxide electrolysis cells (SOECs) to store renewable electric energy of sun and wind in hydrogen fuel. Among the electrochemical energy conversion and storage devices, SOCs are the most clean and efficient technology with unique dual functionality. Due to the high operation temperature (typically 600–800°C), SOCs exhibit many advantages over other energy conversion devices, such as low material cost, high efficiency and fuel flexibility. There has been rapid development of SOC technologies over the last decade with significant advantages and progress in key materials and a fundamental understanding of key issues such as an electrode, electrolyte, performance degradation, poisoning, and stack design. The reversible polarization also has a critical effect on the surface segregation and stability of the electrode and electrode/electrolyte interface. This critical review starts with a brief introduction, working principles and thermodynamics of SOC technology to readers with interests in this rapidly developing and emerging field. Then the key materials currently used in SOCs are summarized, followed by the discussion of the most advanced electrode modification methods and critical issues of SOCs, including the surface chemistry, segregation, electrode/electrolyte interface and varying material degradation mechanisms under reversible operations. The challenges and prospects of SOC technology for future developments are discussed.

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In-situ construction of ceria-metal/titanate heterostructure with controllable architectures for efficient fuel electrochemical conversion

Cited by 26 publications

References 73 publications

Electrochemical Activation Applied to Perovskite Titanate Fibers to Yield Supported Alloy Nanoparticles for Electrocatalytic Application

Electrochemical Activation Applied to Perovskite Titanate Fibers to Yield Supported Alloy Nanoparticles for Electrocatalytic Application

Enhanced oxygen reduction kinetics of IT-SOFC cathode with PrBaCo₂O_5+δ/Gd_0.1Ce_1.9O_2−δ coherent interface

A critical review of key materials and issues in solid oxide cells

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In-situ construction of ceria-metal/titanate heterostructure with controllable architectures for efficient fuel electrochemical conversion

Cited by 26 publications

References 73 publications

Electrochemical Activation Applied to Perovskite Titanate Fibers to Yield Supported Alloy Nanoparticles for Electrocatalytic Application

Electrochemical Activation Applied to Perovskite Titanate Fibers to Yield Supported Alloy Nanoparticles for Electrocatalytic Application

Enhanced oxygen reduction kinetics of IT-SOFC cathode with PrBaCo2O5+δ/Gd0.1Ce1.9O2−δ coherent interface

A critical review of key materials and issues in solid oxide cells

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Enhanced oxygen reduction kinetics of IT-SOFC cathode with PrBaCo₂O_5+δ/Gd_0.1Ce_1.9O_2−δ coherent interface