1,721,022 research outputs found
Chemical vapor deposition and atomic layer deposition for advanced lithium ion batteries and supercapacitors
No full textApplications of the non-line-of-sight vapor deposition techniques, such as chemical vapor deposition (CVD) and atomic layer deposition (ALD), offer unique opportunities to produce well-defined high surface area current collectors, thin films or various nanostructures of active (ion-storage) materials, protective coatings, solid electrolytes and improved separators. These features hold significant promise for solving emerging issues in advanced LiBs and supercapacitors. This paper reviews recent developments and applications of CVD and ALD for these energy storage devices, providing selected examples and outlining critical challenges for further exploration
Methods and Compositions for Anode and Cathode Nanocomposite Materials for Thermal Batteries
No full textDisclosed herein are compositions and methods of making such compositions, for making lithium-containing anodes and cathodes. Disclosed are batteries comprising such anodes and/or cathodes, and uses for such batteries. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure.Binergy Scientific Inc.Georgia Tech Research Corporatio
A cubic ordered, mesoporous carbide-derived carbon for gas and energy storage applications
No full textOschatz, Martin Kockrick, Emanuel Rose, Marcus Borchardt, Lars Klein, Nicole Senkovska, Irena Freudenberg, Thomas Korenblit, Yair Yushin, Gleb Kaskel, StefanA hierarchical and highly porous carbide-derived carbon (CDC) was obtained by nanocasting of pre-ceramic precursors into cubic ordered silica (KIT-6) and subsequent chlorination. Resulting CDC replica materials show high methane and n-butane uptake and excellent performance as electrode materials in supercapacitors. (C) 2010 Elsevier Ltd. All rights reserved
Metal Sulfide Composite Materials for Batteries
No full textLithium-ion batteries are provided that variously comprise anode and cathode electrodes, an electrolyte, a separator, and, in some designs, a protective layer. In some designs, at least one of the electrodes may comprise a composite of (i) Li2S and (ii) conductive carbon that is embedded in the core of the composite. In some designs, the protective layer may be disposed on at least one of the electrodes via electrolyte decomposition. Various methods of fabrication for lithium-ion battery electrodes and particles are also provided.Sila Nanotechnologies Inc.Georgia Tech Research Corporatio
Stabilization of Li-Ion Battery Anodes
No full textLi-ion batteries are provided that include a cathode, an anode comprising active particles, an electrolyte ionically coupling the anode and the cathode, a separator electrically separating the anode and the cathode, and at least one hydrofluoric acid neutralizing agent incorporated into the anode or the separator. Li-ion batteries are also provided that include a cathode, an anode comprising active particles, an electrolyte ionically coupling the anode and the cathode, and a separator electrically separating the anode and the cathode, where the electrolyte may be formed from a mixture of an imide salt and at least one salt selected from the group consisting of LiPF₆, LiBF₄, and LiClO₄. Li-ion battery anodes are also provided that include an active material core and a protective coating at least partially encasing the active material core, where the protective coating comprises a material that is resistant to hydrofluoric acid permeation.Sila Nanotechnologies Inc.Georgia Tech Research Corporatio
Metal Sulfide Composite Materials For Batteries
No full textLithium-ion batteries are provided that variously comprise anode and cathode electrodes, an electrolyte, a separator, and, in some designs, a protective layer. In some designs, at least one of the electrodes may comprise a composite of (i) Li2S and (ii) conductive carbon that is embedded in the core of the composite. In some designs, the protective layer may be disposed on at least one of the electrodes via electrolyte decomposition. Various methods of fabrication for lithium-ion battery electrodes and particles are also provided.Sila Nanotechnologies Inc.Georgia Tech Research Corporatio
Carbon Nanotube Array Bonding
No full textMaterial compositions are provided that may comprise, for example, a vertically aligned carbon nanotube (VACNT) array, a conductive layer, and a carbon interlayer coupling the VACNT array to the conductive layer. Methods of manufacturing are provided. Such methods may comprise, for example, providing a VACNT array, providing a conductive layer, and bonding the VACNT array to the conductive layer via a carbon interlayer.Georgia Tech Research Corporatio
Low-Cost Hydrothermal Synthesis of Porous Carbon Spheres with Tunable Particle Size
No full textSpherical porous carbon particles find applications in gas storage, biological and medical
sorbents, energy storage devices and other demanding applications. At the same time, the common
routes for their synthesis are elaborate and costly. Here we report on our study of a low-cost
synthesis of spherical carbons with uniform and tunable diameter. The application of a lowtemperature
hydrothermal process greatly accelerates the rate of cross-linking within polymer
precursors, allowing formation of individual spherical carbon particles upon subsequent polymer
carbonization. By reducing the precursor concentration we have demonstrated particle size
reduction from 1,250 to 140 nm. The as-produced particles exhibit disordered microstructure with
very smooth particle surface and open internal micro-porosity.Undergraduat
Electrodes, Lithium-ion Batteries, And Methods Of Making And Using Same
No full textDescribed herein are improved composite anodes and lithium-ion batteries made therefrom. Further described are methods of making and using the improved anodes and batteries. In general, the anodes include a porous composite having a plurality of agglomerated nanocomposites. At least one of the plurality of agglomerated nanocomposites is formed from a dendritic particle, which is a three-dimensional, randomly-ordered assembly of nanoparticles of an electrically conducting material and a plurality of discrete non-porous nanoparticles of a non-carbon Group 4A element or mixture thereof disposed on a surface of the dendritic particle. At least one nanocomposite of the plurality of agglomerated nanocomposites has at least a portion of its dendritic particle in electrical communication with at least a portion of a dendritic particle of an adjacent nanocomposite in the plurality of agglomerated nanocomposites.Sila Nanotechnologies Inc.Georgia Tech Research Corporatio
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