Abstract: Disclosed are an anode active material for a secondary battery an a method for preparing the same, wherein the anode active material includes: a crystalline carbon particle; silicon-based nanoparticles, which are surface-coated with a first amorphous carbon layer and embedded into the crystalline carbon particle while being dispersed on a surface of the crystalline carbon particle; and a second amorphous carbon layer enclosing a surface of the crystalline carbon particle and the silicon-based nanoparticles, so a novel metal composite-based anode active material can be provided that has excellent life characteristics and high battery capacity.

Abstract: The present disclosure provides an anode active material for a secondary battery, including: a composite particle including silicon and a first carbon; and carbon nanotube (CNTs) directly grown on a surface of the composite particle, in which the composite particle is a metal catalyst-free type for synthesizing carbon nanotubes, and a preparation method thereof. The present disclosure may provide a novel metal composite-based anode active material having excellent cycle life characteristics and high capacity of a battery.

Abstract: A thermoelectric material includes a substrate particle and a plurality of conformal oxide layers formed on the substrate particle. The plurality of conformal oxide layers has a total oxide layer thickness ranging from about 2 nm to about 20 nm. The thermoelectric material excludes oxide nanoparticles. A method of making the thermoelectric material is also disclosed herein.

Abstract: A thermoelectric material includes a substrate particle and a plurality of conformal oxide layers formed on the substrate particle. The plurality of conformal oxide layers has a total oxide layer thickness ranging from about 2 nm to about 20 nm. The thermoelectric material excludes oxide nanoparticles. A method of making the thermoelectric material is also disclosed herein.

Abstract: The invention provides an anode comprising a nanocomposite of graphene-oxide and a silicon-based polymer matrix. The anode exhibits a high energy density such as ˜800 mAhg?1 reversible capacity, a superlative power density that exceeds 250 kW/kg, a good stability, and a robust resistance to failure, among others. The anodes can be widely used in a lithium-ion battery, an electric car, a hybrid electromotive car, a mobile phone, and a personal computer etc. The invention also provides a liquid phase process and a solid-state process for making the nanocomposite, both involving in-situ reduction of the graphene-oxide during a pyrolysis procedure.