Fuel cells are uniquely capable of overcoming combustion efficiency limitations (e.g., the Carnot cycle). However, linking fuel (an energy conversion device) and hydrogen carrier) has emphasized investment in proton-exchange membrane as part a larger economy thus relegated to future technology. In contrast, solid oxide operating on conventional fuels (as well hydrogen) today. The main issue for is high temperature (about 800°C) resulting materials cost complexities thermal cycling). Recent...

The 2012 Department of Energy (DOE) budget request significantly reduces fuel cell RD&D funding and would cease to support the Solid State Conversion Alliance (SECA), DOE's solid oxide (SOFC) program. This be a grave mistake considering US's historic dominance in RD&D, exciting recent technological advancements cells, clear positive market signals around globe. In this paper we discuss energy policy, how SOFCs address every key DOE strategy, why advances should make an integral part our...

An universal oxygen-electrode, compatible to both oxygen- and proton-conducting solid oxide electrochemical cells (O-SOCs H-SOCs, respectively), as well for electricity hydrogen production purpose is showcased.

Abstract Robust oxide electrodes with high activity and durability have attracted significant attention as alternatives for Ni‐based cathodes in high‐temperature solid electrolysis cells (SOECs). Noncoking La(Sr)Cr(Mn)O 3 (LSCM)‐based shown promise durable ceramic cathodes; however, they suffer from low electrocatalytic activities electrochemical CO 2 reduction. In this study, a dual‐phase composite electrode consisting of LSCM Ce(Mn, Fe)O (CMF) is developed to enhance the reduction SOECs....

Protonic ceramic electrochemical cells (PCECs) have attracted considerable attention owing to their ability reversibly convert chemical fuels into electricity at low temperatures below 600 °C. However, extreme sintering conditions during conventional convection-based heating induce critical problems for PCECs such as nonstoichiometric electrolytes and microstructural coarsening of the electrodes, leading performance deterioration. Therefore, we fabricated via a microwave-assisted process...

Abstract The unique characteristics of nanofibers in rational electrode design enable effective utilization and maximizing material properties for achieving highly efficient sustainable CO 2 reduction reactions (CO RRs) solid oxide electrolysis cells (SOECs). However, practical application nanofiber-based electrodes faces challenges establishing sufficient interfacial contact adhesion with the dense electrolyte. To tackle this challenge, a novel hybrid nanofiber electrode, La 0.6 Sr 0.4 Co...

Abstract Protonic ceramic electrochemical cells (PCECs) hold great promise as an energy conversion and storage technology at lower temperatures (400–650 °C). However, the sluggish reaction kinetics oxygen electrode hinder activity of PCECs. Herein, a series bifunctional electrodes based on bimetal‐doped BaCoO 3‐𝛿 (BCO) are reported. Doping hampers hexagonal perovskite formation transforms BCO into cubic perovskite, improving water uptake hydration abilities. Density functional theory...

Abstract Protonic ceramic electrochemical cells, a promising technology for energy conversion and storage, have garnered significant interest in recent years owing to their superior low-temperature (< 600 °C) performance relative solid oxide cells. However, the sluggish kinetics of oxygen electrodes impeded further advancements. Despite considerable research efforts, development practically applicable remains challenging. We herein review focusing on fundamental understanding electrode...

Dry CO2 electrolysis in solid oxide cells (SOECs), a highly efficient, versatile method for converting into value-added products, is critically limited by carbon deposition on Ni-based fuel electrodes. We achieved coke-free using SOECs elaborately controlling the local gas environments. Multilayered electrode microstructures were systematically engineered to facilitate mass transport and maintain CO partial pressure below threshold formation. A fuel-electrode-supported cell with an improved...

Abstract A novel in situ co‐assembled nanocomposite LSM‐Bi 1.6 Er 0.4 O 3 (ESB) (icn‐LSMESB) was obtained by conjugated wet‐chemical synthesis. It showed an enhancement of the cathode polarization at 600 °C >140 times relative to conventional LSM‐Y 0.08 Zr 0.84 1.92 (YSZ) cathodes and exceptional solid oxide fuel cell (SOFC) performance >2 W cm −2 below 750 °C. This demonstrates that this cost‐effective broadly applicable process provides new opportunities for energy storage conversion...

Layered perovskite SrGdNixMn1–xO4±δ phases were evaluated as new ceramic anode materials for use in solid oxide fuel cells (SOFCs). Hydrogen temperature-programmed reduction (H2-TPR) analysis of the (x = 0.2, 0.5, and 0.8) revealed that significant exsolution Ni nanoparticles occurred SrGdNi0.2Mn0.8O4±δ (SGNM28) H2 at over 650 °C. Consistently, SGNM28 on LSGM electrolyte showed low electrode polarization resistance (1.79 Ω cm2) 800 Moreover, after 10 redox cycles 750 °C, area specific...

The rational design and exploration of the metal oxide-carbon composite are greatly desired for enhanced supercapacitor application. Herein, we develop a novel Bi2MoO6 carbon sphere hybrid material as electrode via simple solvothermal process. microstructural analysis sphere@Bi2MoO6 reveals that 10 nm thick nanopetals consistently anchored on spheres surface, forming 3-dimensional nanoarchitecture. displays an excellent specific capacitance 521.42 F g–1 at 1 A g–1, which is one best values...

A functionally graded Bi1.6Er0.4O3 (ESB)/Y0.16Zr0.84O1.92 (YSZ) bilayer electrolyte is successfully developed via a cost-effective screen printing process using nanoscale ESB powders on the tape-cast NiO-YSZ anode support. Because of highly enhanced oxygen incorporation at cathode/electrolyte interface, novel solid oxide fuel cell (SOFC) yields extremely high power density ∼2.1 W cm–2 700 °C, which 2.4 times increase compared to that YSZ single SOFC.

A multiscale architectured solid oxide fuel cell is demonstrated by applying a large-area ceramic micropatterning and thin-film deposition processes.

Highly conductive Dy and Y co-doped bismuth oxides combined with La_0.8Sr_0.2MnO_3−δsignificantly enhanced the ORR OER as oxygen electrodes for reversible SOCs.

Solid oxide cells (SOCs) are mutually convertible energy devices capable of generating electricity from chemical fuels including hydrogen in the fuel cell mode and producing green using renewable but intermittent solar wind resources electrolysis mode. An effective approach to enhance performance SOCs at reduced temperatures is by developing highly active oxygen electrodes for both reduction evolution reactions. Herein, conductive Sm3+ Nd3+ double-doped ceria (Sm0.075Nd0.075Ce0.85O2−δ, SNDC)...

Abstract Protonic ceramic fuel cells (PCFCs) are promising eco‐energy electrochemical energy conversion systems that can efficiently operate in intermediate (500–700 °C) to low (500 temperature ranges. In this review the most recent advances materials research for components of PCFCs (i.e., electrolyte, cathode, and anode) their interface engineering introduced. Recent approaches improve protonic conductivity, activity stability electrolyte electrode first presented. addition, new attempts...

Abstract Reversible protonic ceramic electrochemical cells (R‐PCECs) are emerging as highly efficient energy conversion devices, operating below 650 °C. The primary challenge in advancing R‐PCECs lies developing and stable proton‐conducting electrolytes capable of withstanding the chemical instability caused by common contaminants like CO 2 H O. Herein, a novel high‐entropy perovskite oxide (HEPO) material is introduced, incorporating six equimolar B‐site cations (BaHf 1/6 Sn Zr Ce Y Yb O...