An In Situ Formed, Dual‐Phase Cathode with a Highly Active Catalyst Coating for Protonic Ceramic Fuel Cells

Chen, Yu; Yoo, Seonyoung; Pei, Kai; Chen, Dongchang; Zhang, Lei; deGlee, Ben; Murphy, Ryan; Zhao, Bote; Zhang, Yanxiang; Chen, Yan; Liu, Meilin

doi:10.1002/adfm.201704907

Cited by 93 publications

(74 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Since the cathodic performance decisively determines the electrode polarization resistance, the search for high‐performance cathodes that performs well in ILT‐PCFCs has attracted more and more attention. [ 15–20 ]…”

Section: Introductionmentioning

confidence: 99%

Building Ruddlesden–Popper and Single Perovskite Nanocomposites: A New Strategy to Develop High‐Performance Cathode for Protonic Ceramic Fuel Cells

Shi

et al. 2021

Small

View full text Add to dashboard Cite

Here a new strategy is unveiled to develop superior cathodes for protonic ceramic fuel cells (PCFCs) by the formation of Ruddlesden–Popper (RP)‐single perovskite (SP) nanocomposites. Materials with the nominal compositions of LaSrxCo1.5Fe1.5O10−δ (LSCFx, x = 2.0, 2.5, 2.6, 2.7, 2.8, and 3.0) are designed specifically. RP‐SP nanocomposites (x = 2.5, 2.6, 2.7, and 2.8), SP oxide (x = 2.0), and RP oxide (x = 3.0) are obtained through a facile one‐pot synthesis. A synergy is created between RP and SP in the nanocomposites, resulting in more favorable oxygen reduction activity compared to pure RP and SP oxides. More importantly, such synergy effectively enhances the proton conductivity of nanocomposites, consequently significantly improving the cathodic performance of PCFCs. Specifically, the area‐specific resistance of LSCF2.7 is only 40% of LSCF2.0 on BaZr0.1Ce0.7Y0.2O3−δ (BZCY172) electrolyte at 600 °C. Additionally, such synergy brings about a reduced thermal expansion coefficient of the nanocomposite, making it better compatible with BZCY172 electrolyte. Therefore, an anode‐supported PCFC with LSCF2.7 cathode and BZCY172 electrolyte brings an attractive peak power output of 391 mW cm−2 and excellent durability at 600 °C.

show abstract

Section: Introductionmentioning

confidence: 99%

Building Ruddlesden–Popper and Single Perovskite Nanocomposites: A New Strategy to Develop High‐Performance Cathode for Protonic Ceramic Fuel Cells

Shi

et al. 2021

Small

View full text Add to dashboard Cite

show abstract

“…The cathode of the ceramic fuel cell shows excellent electrocatalytic activity and durability. [121] The peak power density of single cells tested with wet H 2 (3% humidity) as the fuel and ambient air as the oxidant at 750 and 650°C can reach � 0.78 and � 0.44 W cm À 2 , respectively. This performance is one of the best performances of recently reported PCFC (Figure 13a).…”

Section: Fuel Cellmentioning

confidence: 98%

“…The oxygen‐rich vacancy on surface of PrO x nanoparticles greatly improves the ORR rate after a long time cycling. The cathode of the ceramic fuel cell shows excellent electrocatalytic activity and durability [121] . The peak power density of single cells tested with wet H 2 (3% humidity) as the fuel and ambient air as the oxidant at 750 and 650 °C can reach ≈0.78 and ≈0.44 W cm −2 , respectively.…”

Section: Energy Storage Devicementioning

confidence: 99%

Recent Progress on Defect‐rich Transition Metal Oxides and Their Energy‐Related Applications

Wang

Liang

Zheng

et al. 2020

Chemistry An Asian Journal

View full text Add to dashboard Cite

The applications of many energy-related electrochemical energy conversion and storage devices are changing with each passing day. Oxygen evolution reaction (OER), hydrogen evolution reaction (HER) and oxygen reduction reaction (ORR) are the key steps in the commercial application of these energy conversion/storage equipment. Defect-rich transition metal oxides (TMOs), such as Co, Mn, Fe, Ni, etc., have always been one of the most promising electrocatalysts, which are cheap, easy to obtain, high in catalytic activity and stable during electrocatalysis. In this review, we first introduce the definition, classification, characteristics, and construction of defects. Then, the latest developments of defect-rich TMO electrocatalysts in electro-catalysis and energy conversion storage device is summarized. Furthermore, the relationship between defects and activity and the potential mechanism are also discussed. The defects in defect-rich TMOs can adjust the surface/interface electronic structure of the electrocatalyst, change the adsorption energy of the intermediate product, or increase the intrinsic catalytic activity of active sites, which are beneficial for enhanced catalytic performance. Finally, the current challenges and prospects of defect-rich TMO electrocatalysts are proposed. Therefore, the introduction of defects in TMO will be a potential strategy for the rational design of high-performance electrocatalysts in the future.

show abstract

“…A‐site enriched surfaces are generally observed in perovskite oxides with stoichiometric compositions. [ 179–187 ] By introducing A‐site deficiency, the exsolution of B‐site cations is effectively facilitated under reducing conditions. [ 52,103,127,133,188–196 ] For instance, Neagu et al.…”

Section: Mechanism Of Metal Exsolutionmentioning

confidence: 99%

Progress of Exsolved Metal Nanoparticles on Oxides as High Performance (Electro)Catalysts for the Conversion of Small Molecules

Sun

Chen

Yin

et al. 2021

Small

Self Cite

View full text Add to dashboard Cite

Utilizing electricity and heat from renewable energy to convert small molecules into value‐added chemicals through electro/thermal catalytic processes has enormous socioeconomic and environmental benefits. However, the lack of catalysts with high activity, good long‐term stability, and low cost strongly inhibits the practical implementation of these processes. Oxides with exsolved metal nanoparticles have recently been emerging as promising catalysts with outstanding activity and stability for the conversion of small molecules, which provides new possibilities for application of the processes. In this review, it starts with an introduction on the mechanism of exsolution, discussing representative exsolution materials, the impacts of intrinsic material properties and external environmental conditions on the exsolution behavior, and the driving forces for exsolution. The performances of exsolution materials in various reactions, such as alkane reforming reaction, carbon monoxide oxidation, carbon dioxide utilization, high temperature steam electrolysis, and low temperature electrocatalysis, are then summarized. Finally, the challenges and future perspectives for the development of exsolution materials as high‐performance catalysts are discussed.

show abstract

An In Situ Formed, Dual‐Phase Cathode with a Highly Active Catalyst Coating for Protonic Ceramic Fuel Cells

Cited by 93 publications

References 39 publications

Building Ruddlesden–Popper and Single Perovskite Nanocomposites: A New Strategy to Develop High‐Performance Cathode for Protonic Ceramic Fuel Cells

Building Ruddlesden–Popper and Single Perovskite Nanocomposites: A New Strategy to Develop High‐Performance Cathode for Protonic Ceramic Fuel Cells

Recent Progress on Defect‐rich Transition Metal Oxides and Their Energy‐Related Applications

Progress of Exsolved Metal Nanoparticles on Oxides as High Performance (Electro)Catalysts for the Conversion of Small Molecules

Contact Info

Product

Resources

About