Materials Literature
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Cytochrome P450 plays a central role in drug metabolism and steroid biosynthesis. Among heme enzymes, cytochrome P450 and NO synthase (NOS) have strong oxidizing ability and unusual structure, in that their heme iron has thiolate coordination. We previously succeeded in synthesizing the first synthetic heme thiolate (…
Si-based active materials started to be used for small lithium-ion batteries (LIBs) such as 18650 cells with 3.5Ah (INR18650MJ1) in 2015 by LG Chem. However, its relative amount is known to be much smaller than graphitic materials due to the continuous pulverization caused by large volume change during cycling. The ga…
The isolation and scale-up of electronically monodisperse carbon nanotubes (CNTs) have heightened expectations for CNT-based thin-film electronic devices [1-4] and circuits [5-10]. Indeed, significant progress has been reported for individual CNT thin-film transistors (TFTs), ultimately leading to the demonstration of…
Nano- and micro-scale structural characterization, in 3D, are critical to understanding the structure-property relationships in energy materials. In solid oxide fuel cells, long-term structural degradation due to such effects as Ni coarsening or oxidation mean that additionally these structures are not static. Such is…
Highly ordered thin molecular films, from monolayer to multilayer assemblies, promise considerable development for micro- and nanotechnology. In particular, the application of supramolecular chemistry to the direct assembling of functional layers at surfaces added a new and highly diverse class of materials to modern m…
The authors study a mixture experiment with three components where the primary response is enhanced by the addition of two new components.
Solid oxide fuel cell (SOFC) is expected as a promising energy conversion device because of its high efficiency and fuel flexibility. It is widely known that electrode microstructures are of great importance for attaining high performance as well as high reliability of SOFCs. In the SOFC fabrication processes, sinteri…
The design of stimuli-responsive systems in which supramolecular structure changes in response to external signals, such as the change in voltage of an electrode, is important for many applications, for example, self-healing polymers and gels, triggered release of entrapped molecules for drug delivery, and “smart” mat…
Bismuth oxychloride has emerged as an important material for photoelectrochemical, photocatalysis and photovoltaic application. Its unique crystal structure of alternating sheets of [BiO2]2+ and two Cl-1 along the c-axis, leads to the formation of an internal electrical dipole, facilitating faster electron-hole separa…
Fullerenes are spherical molecules composed of pentagons and hexagons. Endohedral fullerenes, which possess inner space capable of encapsulation of variable clusters and molecules, have generated considerable recent research interest. By introducing CO2 as the reactive gas source, the synthesis of extensive families o…
In general, electrochemistry is based on electron exchange between different species (ions, atoms, molecules,grains…), in a liquid or solid environment, and this electron exchange is usually written in using the concept of oxidation state of the different elements constituting the species. Redox processes are thus int…
High density energy storage is one of the current demands for sustaining renewable energy systems. This requires high charging and discharging rate, large power density and stability for prolong time of service. Several materials have been explored however none of them satisfy most or all of these requirements. Graphe…
Solid Oxide Fuel Cell (SOFC) devices convert chemical energy into electrical energy by oxidizing fuels such as hydrogen, natural gas, ethanol or hydrocarbon mixtures, which highlights the capability of SOFCs as candidates for applications in stationary power generation. The main species used as fuel in the SOFC are H2…
Introduction The molten carbonate fuel cell (MCFC) has emerged as one of the leading power-generation devices to efficiently convert chemical energy into electricity. To date ~ 4 Billion kWh of electricity has been produced commercially using this new technology. The matrix, a porous microstructure consisting mainly o…
Single-walled carbon nanotubes (SWCNTs) have the potential to revolutionize many areas of opto-electronics, particularly thin-film photovoltaics and thermoelectrics due to their high carrier mobility and low-dimensional structure. Much effort has been devoted to increasing the thermoelectric power factor of SWCNTs by…
Supercapacitors are widely recognized as an important class of energy storage devices because they can provide a high specific power and long cycle life. Electrical double-layer capacitors (EDLCs) store charge and release electric energy through the transfer of ions to and from the electrode/electrolyte interface with…
The production of biorenewable chemicals has significantly evolved over the past years and numerous processes either have reached commercial stage or are close to commercialization.1 Recently, the biological synthesis of diacids has been receiving greater attention for the manufacture of green polyesters and polyamide…
Symmetrical Solid Oxide Fuel Cell Nano-Composite Cathodes (NCCs) were fabricated by infiltrating Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF) precursor nitrate solutions containing glycine and Triton-X 100 into porous Ce0.9Gd0.1O1.95 (GDC) cathode scaffolds. X-ray diffraction indicated that in all cases the BSCF infiltrate was >90…
We report an efficient and simple method to synthesize tungsten oxide nanostructures, including high quality and quantity nanowires, through thermal evaporation of WO3 powders without catalyst. The thermal evaporation processing was conducted in a three zone horizontal tube furnace over temperatures ranging from 300 t…
GaN based power transistors have attracted intensive interest for highly efficient, high-frequency and high-temperature switching applications. Compared with GaN lateral devices, GaN based vertical devices can provide higher current density and higher breakdown voltage. In combination with low defect density offered b…