The present report demonstrates a new technique for doping heteroatoms (nitrogen, phosphorus, and sulfur) into carbon materials via versatile post-treatment. heat-treatment of with reagent, which is stable at ambient temperatures evolves reactive gases on heating, in vacuum-closed tube allows the introduction various heteroatom-containing functional groups matrix. In addition, sequential reactions give rise to dual- triple-heteroatom-doped carbons. pore properties precursor are preserved...

This report demonstrates a facile one-pot synthesis of hierarchically porous resorcinol-formaldehyde (RF) gels comprising mesoporous nanorod assemblies with two-dimensional (2D) hexagonal ordering by combining supramolecular self-assembly strategy in the nanometer scale and phase separation micrometer scale. The tailored multilevel pore system polymer scaffolds can be preserved through carbonization thermal activation, yielding multimodal carbon activated (AC) monoliths. thin columnar...

Macro/meso/microporous carbon monoliths doped with sulfur have been prepared from sulfonated poly(divinylbenzene) networks followed by the activation CO2 resulted in activated high surface area of 2400 m2 g−1. The monolithic electrode shows remarkably specific capacitance (175 F g−1 at 5 mV s−1 and 206 0.5 A g−1).

A monolithic material has marshmallow-like flexibility and superamphiphobic properties on any cutting surface. The two-step synthesis consists of a simple sol–gel process to obtain vinyl-modified superhydrophobic gels grafting perfluoroalkyl groups onto the pore surface decrease energy. These materials float water even organic liquids with low polarity, such as alkanes.

Abstract Hard carbons have immense potential as anode materials for Na‐ion batteries, because the expanded graphene interlayers and nanovoids between randomly stacked aromatic fragments can accommodate a substantial amount of sodium. However, large irreversible capacity in first cycle still remains significant issue terms practicable battery technology. Here, we show that hard carbon electrodes derived from common phenol resin deliver high reversible within narrow range 0.1–0.005 V (vs. Na +...

Integrated design of both porous structure and crystalline morphology is expected to open up the way a new class materials. This report demonstrates nanostructured Li 4 Ti 5 O 12 materials with hierarchically structures flower‐like morphologies. Electrochemical studies electrodes Li‐ion Na‐ion batteries clearly reveal advantage nanoarchitectural active In addition, temperature dependence Na + ‐insertion/extraction capacity in relation for first time evaluated it found that elevation cell...

Monolithic conductive titanium oxides Ti(n)O(2n-1) (n = 2, 3, 4, 6) with well-defined macropores have been successfully prepared as a single phase, via reduction of macroporous TiO(2) precursor monolith using zirconium getter. Despite substantial removal oxide ions, all the reduced monoliths retain macropore properties precursor, i.e., uniform pore size distribution and volume. Furthermore, compared to commercial porous Ebonex (shaped Ti(n)O(2n-1)), bulk densities (1.8 g cm(-3)) are half,...

Flexible low-density materials, such as aerogels and polymer foams, have received increasing attention energy absorbers cushions that protect artificial products human bodies. Microscopic geometry is a crucial factor determining their mechanical functions, i.e. strength toughness (flexibility). However, it formidable challenge to combine these two properties because they are mutually elusive in general; stiff materials brittle, while flexible ones soft. Here, we demonstrate lightweight...

Monolithic titania (TiO 2 ) with multiscale porous structures have been successfully prepared via the sol–gel route accompanied by phase separation utilizing a chelating agent and mineral salt. The TiO gels obtained possess well‐defined macropores derived from spinodal decomposition mesopores as interstices of anatase nanocrystallites. Most were removed hydrolysis subsequent decarbonation through gradual solvent exchange ethanol to water. particles comprising gel skeletons spontaneously...

A novel and facile method for the preparation of monolithic LiFePO4/carbon composites with well-defined macropores has been developed. The precursor macroporous gels consisting inorganic networks as well organic polymers were fabricated by epoxide-mediated sol–gel accompanied phase separation. inorganic–organic hybrid calcined under an inert atmosphere, resulting in monoliths. influence starting compositions on gel morphologies investigated, constituents network discussed. reaction mechanism...

ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTADDITION / CORRECTIONThis article has been corrected. View the notice.Ultralow-Density, Transparent, Superamphiphobic Boehmite Nanofiber Aerogels and Their Alumina DerivativesGen Hayase*†§, Kazuya Nonomura†§, George Hasegawa‡, Kazuyoshi Kanamori*†, Kazuki Nakanishi†View Author Information† Department of Chemistry, Graduate School Science, Kyoto University, Kitashirakawa, Sakyo-ku, 606-8502, Japan‡ Energy Hydrocarbon Engineering, Katsura,...

A robust ceramic solid electrolyte with high ionic conductivity is a key component for all-solid-state batteries (ASSBs). In terms of the demand high-energy-density storage, researchers have been tackling various challenges to use metal anodes, where fundamental understanding on metal/solid interface particular importance. The Na+ superionic conductor, so-called NASICON, has potential application ASSBs Na anode due its ion at room temperature, which has, however, faced daunting issue...

Macroporous cross-linked organic polymer monoliths with well-defined bicontinuous structure have been synthesized from 1,3-glycerol dimethacrylate (GDMA) in a solvent utilizing atom transfer radical polymerization (ATRP). With the addition of an adequate polymeric agent, poly(ethylene oxide) (PEO), spinodal decomposition was induced course GDMA. A homogeneous gelation by ATRP solidified temporal biphasic morphology decomposition, resulting macroporous gels after drying. dried obtained this...

Macroporous cross-linked polymeric dried gels have been obtained by inducing phase separation in a homogeneous poly(divinylbenzene) (PDVB) network formed organotellurium-mediated living radical polymerization (TERP). The reaction of DVB with the coexistence nonreactive agent, poly(dimethylsiloxane) (PDMS), solvent 1,3,5-trimethylbenzene (TMB) resulted polymerization-induced (spinodal decomposition), and transient structure spinodal decomposition has frozen gelation. Well-defined macroporous...

We report the fabrication of porous titanium nitride (TiN) monoliths through ammonolysis TiO2 prepared via sol–gel process accompanied by phase separation. The obtained TiN possess good mechanical strength as well excellent electric conductivity with a superconducting transition at Tc ∼5.0 K. have investigated electrochemical properties an electrode using various electrolytes. results reveal that pseudocapacitance increases in order K+ < Na+ Li+ contrary to case EDL capacitance neutral...

Rigid crosslinked polyacrylamide monoliths with well-defined macropores have been successfully fabricated by organotellurium-mediated living radical polymerization (TERP) accompanied spinodal decomposition. The TERP forms homogeneous networks derived from N,N-methylenebis(acrylamide) (BIS), in which decomposition is induced to form macropores. Macropore diameter can be controlled submicrons a few microns, and also the obtained contain mesopores macroporous skeletons, are collapsed...

In this report, we demonstrate a novel synthesis method to obtain reduced titanium oxides with monolithic shape and well-defined hierarchically porous structure from the titanium-based network bridged ethylenediamine. The monoliths are fabricated by nonhydrolytic sol–gel reaction accompanied phase separation. This allows low-temperature crystallization into Ti4O7 Ti3O5 at 800 900 °C, respectively, N-doped carbon. These well-doped N atoms even under argon atmosphere without NH3, which...

The effects of the pore properties and ionic sizes on electric double-layer capacitances have been investigated by using monolithic carbon electrodes with different properties. monoliths high surface areas which possess homogeneous in whole were prepared from bridged-polysilsesquioxane gels via nanophase extraction technique. detailed investigations conducted nitrogen physisorption measurement as well mercury porosimetry. electrochemical property each electrode was examined cyclic...

Macroporous polysilsesquioxane monoliths have been synthesized from biphenylene-bridged alkoxysilane via the sol−gel transition and concurrent phase separation both induced by polycondensation reaction. The obtained gels subsequently converted to macroporous SiC/C composites carbothermal reduction. thus involve no visible cracks their porosity reaches as high >90%. In addition, according nitrogen adsorption−desorption measurement results, micro- mesopore characteristics of samples did not...