Catalysis for Low-Temperature Fuel Cells

Sebastián, David; Baglio, V.

doi:10.3390/catal7120370

Cited by 7 publications

(2 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For example, high‐temperature operation, especially in SOFC, limited the application of highly efficient amorphous cathode materials. Low‐temperature operation that favors quick start‐up and longer stability requires highly active catalysts in reducing the activation energy of ORR and obtaining high conversion efficiency …”

Section: Amo As Electrocatalyst For Energy Conversion and Storagementioning

confidence: 99%

Research Advances of Amorphous Metal Oxides in Electrochemical Energy Storage and Conversion

Yan

Abhilash

Tang

et al. 2018

Small

219

120

View full text Add to dashboard Cite

possess lower hardness, higher strength, higher elasticity, higher tensile strength, lower internal energy, higher interatomic forces, lower viscosity coefficient, larger surface area, higher chemical stability, and strong corrosion resistance compared with their crystalline counterparts. [1][2][3] Based on the anionic constituents, amorphous materials could be categorized as oxides, sulfides, phosphates, etc. Among them, amorphous metal oxide family is of great importance owing to its widespread applications in a variety of areas such as batteries, supercapacitors, electronics, conducting films, multilayered transistors, electrochromic displays, nonvolatile memories, and the like. [4][5][6] As the basic building blocks, metaloxide (M-O) polyhedra are responsible for the essential features of the electronic band structure in amorphous metal oxides (AMOs). [3] AMO materials differ from their crystalline counterparts in the arrangement of M-O polyhedra, in which a random network arrangement of distorted polyhedra with short-range ordering is presented rather than maintaining perfect periodicity. [7,8] The coordination number of the M-O polyhedra, namely, the number of anions bonded to the metal cation, constitutes a crucially decisive factor for the unique properties of AMOs. Multiple polyhedra are interconnected through different types of sharing configurations known as edge sharing, corner sharing, and face sharing of the oxygen atoms. The combination of different sharing geometries also affects the properties of AMOs. [9] In other words, AMOs are formed by the superposition of the distorted M-O polyhedra to form network arrays through a random package. Long-range structural disorder in the AMO reduces scattering mean free path, and the lack of grain boundaries makes the electronic properties identical within large areas. These unique characteristics make them suitable for flexible electronics such as flexible films, intervening layers, thin film transistors, etc. [10][11][12] In recent years, there are numerous reports pointing out the advantages of AMOs over the crystalline counterparts in many electrochemical applications. [13][14][15][16][17] For example, the inherent disorderliness in the structural arrangement and rich defects are evidenced to be highly constructive to improve the alkali ion diffusion through the lattice. [18,19] As for intercalation-type electrodes in lithium-ion batteries (LIBs), amorphous materials Amorphous metal oxides (AMOs) have aroused great enthusiasm across multiple energy areas over recent years due to their unique properties, such as the intrinsic isotropy, versatility in compositions, absence of grain boundaries, defect distribution, flexible nature, etc. Here, the materials engineering of AMOs is systematically reviewed in different electrochemical applications and recent advances in understanding and developing AMO-based high-performance electrodes are highlighted. Attention is focused on the important roles that AMOs play in various energy storage and conversion technologies...

show abstract

Section: Amo As Electrocatalyst For Energy Conversion and Storagementioning

confidence: 99%

Research Advances of Amorphous Metal Oxides in Electrochemical Energy Storage and Conversion

Yan

Abhilash

Tang

et al. 2018

Small

219

120

View full text Add to dashboard Cite

show abstract

“…When we consider the platinum group metals, palladium is comparatively cheaper. [ 27 ] Increased stereoselectivity, [ 28 ] regioselectivity, [ 29 ] and chemoselectivity [ 30 ] of many of the palladium‐catalyzed reactions could attract the attention of most of the researchers to use palladium as a catalyst in organic transformations. Alkylation, [ 31 ] cyclization, [ 32 ] oxidation, [ 33 ] cross‐coupling, [ 34,35 ] and a series of diverse reactions are catalyzed by palladium.…”

Section: Introductionmentioning

confidence: 99%

Palladium‐catalyzed difluoromethylation and difluoroalkylation reactions: An overview

Saranya

Aneeja

Anilkumar

2021

Applied Organom Chemis

View full text Add to dashboard Cite

Broad functional group compatibility and gentle reaction conditions are the advantages of the majority of the palladium‐catalyzed reactions. Fascinating pharmacokinetic properties are possessed by the difluoromethyl group that is isopolar and isosteric to hydroxyl group. The difluoromethylene group is bioisostere for a carbonyl group or an oxygen atom. These groups are present in the structures of plenty of agrochemicals and drug molecules. Attempts to develop new approaches for difluoromethylation and difluoroalkylation reactions are growing notably. Owing to the importance of these compounds in diverse fields, the advances and prospects of palladium‐catalyzed difluoromethylation and difluoroalkylation reactions are reviewed here covering literature up to 2021.

show abstract

A facile method for the fabrication of hierarchical nanosized metal catalysts

González

Rivera

Pastor

et al. 2018

Journal of Catalysis

View full text Add to dashboard Cite

Catalysis for Low-Temperature Fuel Cells

Abstract: Today, the development of active and stable catalysts still represents a challenge to be overcome in the research field of low-temperature fuel cells.[...]

Cited by 7 publications

References 29 publications

Research Advances of Amorphous Metal Oxides in Electrochemical Energy Storage and Conversion

Research Advances of Amorphous Metal Oxides in Electrochemical Energy Storage and Conversion

Palladium‐catalyzed difluoromethylation and difluoroalkylation reactions: An overview

A facile method for the fabrication of hierarchical nanosized metal catalysts

Contact Info

Product

Resources

About