High-Temperature Electrochemical Devices Based on Dense Ceramic Membranes for CO2 Conversion and Utilization

Electrochemistry and energy conversion features of protonic ceramic cells with mixed ionic-electronic electrolytes

“…Further decreases in p O 2 (or the degree of humidity) result in electron conductivity becoming a dominating factor in the overall transport of PCMs. These features should be considered when designing the protonic ceramic electrochemical devices, which operate in “dry” reducing atmospheres, including hydrogen production, alkane conversion 103–105 (ethane to ethylene, methane to benzene), ammonia synthesis, 106,107 etc. For example, the recent work of Wrubel et al 108 theoretically confirmed that cerium reduction of the BaCe 1− x − y Zr x Y y O 3− δ or BaCe 1− x − y − z Zr x Y y Yb z O 3− δ phases might significantly decrease the faradaic efficiency of the corresponding PCECs as compared with the BaZr 1− x Y x O 3− δ phases composed of cations (zirconium, yttrium ions) with stable oxidation states.…”

Applications of Al2O3‐Based Nano‐Catalysts in Thermocatalytic CO2 Transformations: Impacts of Surface Acidity and Basicity

“…Recent works mainly focus on specific reaction system, [65][66][67][68][69][70][71] electrolytic CO 2 conversions, [72][73] photo-enhanced CO 2 transformations, [20,[74][75][76] microwave-assisted CO 2 conversions, [77] plasma-assisted CO 2 utilizations, [78] CO 2 adsorbents and sorption, [79][80] support effects, [81] CeO 2 -based catalysts, [82] Nibased catalysts, [83][84][85][86] zeolite-based catalysis, [87] graphene-based materials, [88] Cr-free metal catalysts, [89] bimetallic catalysts [90] and perovskite catalysts. [22] Different from the previous review works related to CO 2 capture and transformation (Table 1), in this work, the major contents are based on comprehensively summarizing the modification strategies for optimizing the surface acidity and basicity of Al 2 O 3 -based metal catalysts, which in turn determines the CO 2 adsorption, activation and conversion in a series of CO 2 -involved thermocatalytic processes.…”

In situ construction of hetero-structured perovskite composites with exsolved Fe and Cu metallic nanoparticles as efficient CO2 reduction electrocatalysts for high performance solid oxide electrolysis cells

“…Owing to uncontrolled fossil fuel consumption, CO 2 emissions have increased dramatically in recent decades, resulting in a severe environmental crisis. 1 Therefore, lowering CO 2 concentrations and emissions in the atmosphere is critical. In addition to the use of renewable energy sources as replacement for fossil fuels, CO 2 capture and utilization has become another promising alternative.…”