Abstract: Nano-colloids of near monodisperse, carbon-coated SnO2 nano-colloids. There are also carbon-coated SnO2 nanoparticles. There are also SnO2/carbon composite hollow spheres as well as an anode of a Li-ion battery having the nano-colloids. There is also a method for synthesizing SnO2 nano-colloids. There are also coaxial SnO2@carbon hollow nanospheres, a method for making coaxial SnO2@carbon hollow nanospheres and an anode of a Li-ion battery formed from the coaxial SnO2@carbon hollow nanospheres.

Abstract: Each of: (1) a nanoparticle comprising a substantially single crystalline mesoporous Co3O4 material; (2) a battery electrode comprising a plurality of nanoparticles comprising the substantially single crystalline mesoporous Co3O4 material; (3) a battery comprising the battery electrode comprising the plurality of nanoparticles comprising the substantially single crystalline mesoporous Co3O4 material; and (4) a plurality of methods for preparing the nanoparticle comprising the substantially single crystalline mesoporous Co3O4 material, may be employed within the context of a lithium containing battery, such as a lithium ion battery. When the substantially single crystalline mesoporous Co3O4 material has a pore size of about 3 to about 8 nanometers enhanced lithium containing battery electrical performance properties are observed.

Abstract: The present invention relates to nano structures of metal oxides having a nanostructured shell (or wall), and an internal space or void. Nanostructures may be nanoparticles, nanorod/belts/arrays, nanotubes, nanodisks, nanoboxes, hollow nanospheres, and mesoporous structures, among other nanostructures. The nanostructures are composed of polycrystalline metal, oxides such as SnO2. The nanostructures may have concentric walls which surround the internal space of cavity. There may be two or more concentric shells or walls. The internal space may contain a core such ferric oxides or other materials which have functional properties. The invention also provides for a novel, inexpensive, high-yield method for mass production of hollow metal oxide nanostructures. The method may be template free or contain a template such as silica. The nanostructures prepared by the methods of the invention provide for improved cycling performance when tested using rechargeable lithium-ion batteries.

Abstract: Nano-colloids of near monodisperse, carbon-coated SnO2 nano-colloids. There are also carbon-coated SnO2 nanoparticles. There are also SnO2/carbon composite hollow spheres as well as an anode of a Li-ion battery having the nano-colloids. There is also a method for synthesizing SnO2 nano-colloids. There are also coaxial SnO2@carbon hollow nanospheres, a method for making coaxial SnO2@carbon hollow nanospheres and an anode of a Li-ion battery formed from the coaxial SnO2@carbon hollow nanospheres.

Abstract: Each of: (1) a nanoparticle comprising a substantially single crystalline mesoporous Co3O4 material; (2) a battery electrode comprising a plurality of nanoparticles comprising the substantially single crystalline mesoporous Co3O4 material; (3) a battery comprising the battery electrode comprising the plurality of nanoparticles comprising the substantially single crystalline mesoporous Co3O4 material; and (4) a plurality of methods for preparing the nanoparticle comprising the substantially single crystalline mesoporous Co3O4 material, may be employed within the context of a lithium containing battery, such as a lithium ion battery. When the substantially single crystalline mesoporous Co3O4 material has a pore size of about 3 to about 8 nanometers enhanced lithium containing battery electrical performance properties are observed.

Abstract: The present invention relates to nano structures of metal oxides having a nanostructured shell (or wall), and an internal space or void. Nanostructures may be nanoparticles, nanorod/belts/arrays, nanotubes, nanodisks, nanoboxes, hollow nanospheres, and mesoporous structures, among other nanostructures. The nanostructures are composed of polycrystalline metal oxides such as SnO2. The nanostructures may have concentric walls which surround the internal space of cavity. There may be two or more concentric shells or walls. The internal space may contain a core such ferric oxides or other materials which have functional properties. The invention also provides for a novel, inexpensive, high-yield method for mass production of hollow metal oxide nanostructures. The method may be template free or contain a template such as silica. The nanostructures prepared by the methods of the invention provide for improved cycling performance when tested using rechargeable lithium-ion batteries.