An amorphous silicon-carbon composite, a method for preparing the amorphous silicon-carbon composite using a pyrolysis method, a negative electrode for a lithium secondary battery, and a lithium secondary battery including the same.

A novel biomass derived catalyst doped porous carbon material and efficient methods to produce it. The doped porous carbon material can be used as a host to generate several materials with a higher performance than exhibited by previous materials. The host material performance enhancement is due to ability to control the amount of doping material, material structure, surface property, and pore size, as well as a high surface area and large pore volume allowing for high sulfur loading. In addition, the hierarchical structure of the porous composites allows an increased in energy density and long cycle life.

The invention relates to a process for preparing silicon-containing composite particles in a fluidized bed. Porous conductive particles having a defined particle size and pore structure are combined with a particulate additive having defined particle size, density and BET surface area. The combined porous conductive particles and particulate additive are subjected to chemical vapour infiltration in a fluidised bed to cause deposition of silicon in the pores of the porous conductive particles.

Composites of silicon and various porous scaffold materials, such as carbon material comprising micro-, meso- and/or macropores, and methods for manufacturing the same are provided. The compositions find utility in various applications, including electrical energy storage electrodes and devices comprising the same.

The invention provides methods for providing composite particles with a carbon coating and the resulting core-shell particulate material. The process comprises subjecting a plurality of precursor composite particles to a heat treatment in contact with a pyrolytic carbon precursor such that an outer shell of a pyrolytic conductive carbon material is formed on the precursor composite particles, wherein the heat treatment is carried out at a temperature of no more than 700° C.

Disclosed is a bottom-up synthesis approach for the fabrication of gold nanoparticles composite carbon thin films based on in situ reduction of gold precursor within a photoresist matrix. This provides the possibility to accumulate noble metal nanostructures both on the surface as wells as in the bulk of a tough material like glassy carbon. With several advantages ranging from electronics, catalysis, optics and several other biofuntionalization technologies, this material is like a hybrid. Moreover, fabrication of micro and Nano level structures make it as a CMEMS and BIOMEMS relevant material for wide range of applications.

A lithium battery including a cathode, an anode, a liquid-impermeable ion-conductive membrane between the cathode and the anode, and an interlayer including a metal-carbon composite between the anode and the liquid-impermeable ion-conductive membrane, wherein the metal-carbon composite includes a carbonaceous material, a metal chemically bonded to the carbonaceous material, and a metal sulfide, a metal fluoride, or a combination thereof chemically bonded to the carbonaceous material.

A supported platinum catalyst having a high ratio of a diffraction peak intensity of a Pt (220) plane and having excellent oxidation resistance, obtained by a simple production method without using a polymer. The supported platinum catalyst includes a carbon support and platinum fine particles supported on the carbon support, the platinum fine particles being such that a ratio of a diffraction peak intensity of a (220) plane with respect to a total of diffraction peak intensities of a (111) plane, a (200) plane, and the (220) plane by X-ray diffraction is not less than 0.128.

The present invention includes novel, low porosity, functionalized carbon micro-powders derived from natural sugars and methods for producing them.

A composition of matter having the following chemical structure: $.Math.H_x{O}_{\frac{\left(x-1\right)}{2}}.Math.Z_y$
wherein x is
and odd integer ≥3;
y is an integer between 1 and 20; and
Z is one of a monoatomic ion from Groups 14 through 17 having a charge value between −1 and −3 or a polyatomic ion having a charge between −1 and −3.