This invention provides a hybrid nano-filament composition for use as an electrochemical cell electrode. The composition comprises: (a) an aggregate of nanometer-scaled, electrically conductive filaments that are substantially interconnected, intersected, or percolated to form a porous, electrically conductive filament network comprising substantially interconnected pores, wherein the filaments have an elongate dimension and a first transverse dimension with the first transverse dimension being less than 500 nm (preferably less than 100 nm) and an aspect ratio of the elongate dimension to the first transverse dimension greater than 10; and (b) micron- or nanometer-scaled coating that is deposited on a surface of the filaments, wherein the coating comprises an anode active material capable of absorbing and desorbing lithium ions and the coating has a thickness less than 20 m (preferably less than 1 m). Also provided is a lithium ion battery comprising such an electrode as an anode. The battery exhibits an exceptionally high specific capacity, an excellent reversible capacity, and a long cycle life.

Dispersion is obtained by: blending a specific resin emulsion for protecting a tungsten-based infrared-absorbing pigment; and dispersing the tungsten-based infrared-absorbing pigment in a state of being coated in advance by means of the resin emulsion.

Dispersion is obtained by: blending a specific resin emulsion for protecting a tungsten-based infrared-absorbing pigment; and dispersing the tungsten-based infrared-absorbing pigment in a state of being coated in advance by means of the resin emulsion.

An infrared absorbing fiber includes: a fiber; and organic-inorganic hybrid infrared absorbing particles, wherein the organic-inorganic hybrid infrared absorbing particles include infrared absorbing particles and a coating resin that covers at least a part of a surface of the infrared absorbing particles, a content of the infrared absorbing particles in the organic-inorganic hybrid infrared absorbing particles is 15 mass % or more and 55 mass % or less, and the organic-inorganic hybrid infrared absorbing particles are located in one or more parts selected from an interior of the fiber and a surface of the fiber.

An infrared absorbing fiber includes: a fiber; and organic-inorganic hybrid infrared absorbing particles, wherein the organic-inorganic hybrid infrared absorbing particles include infrared absorbing particles and a coating resin that covers at least a part of a surface of the infrared absorbing particles, a content of the infrared absorbing particles in the organic-inorganic hybrid infrared absorbing particles is 15 mass % or more and 55 mass % or less, and the organic-inorganic hybrid infrared absorbing particles are located in one or more parts selected from an interior of the fiber and a surface of the fiber.

Functionalized nanofiber yarns with increased hydrophilicity with more than doubled water absorption property are provided. Methods of treatment for producing such functionalized nanofiber yarns are also provided.

Functionalized nanofiber yarns with increased hydrophilicity with more than doubled water absorption property are provided. Methods of treatment for producing such functionalized nanofiber yarns are also provided.

An object to be achieved by the invention is to provide an infrared-shielding fiber structure that does not deteriorate over time in its ability to prevent voyeuristic photography using infrared rays and that can also prevent discoloration of the knitted fabric over time, and clothing using the same.

The infrared-shielding fiber structure of the present invention is an infrared-shielding fiber structure obtained by processing infrared-shielding fibers containing, on a surface and/or inside thereof, infrared-shielding fine particles selected from tungsten oxide fine particles represented by the general formula WO.sub.X (where W is tungsten, O is oxygen, and 2.45X2.999) or composite tungsten oxide fine particles represented by the general formula M.sub.YWO.sub.Z (where element M is an element selected from Cs, Rb, K, Tl, In, etc.; 0.001Y1.0; and 2.2z3.0), wherein the particle size of the fine particles is 1 nm or more and 800 nm or less, and the content of the fine particles per unit area of the structure is 0.10 g/m.sup.2 or more and 4.5 g/m.sup.2 or less; because the average reflectance of the structure at wavelengths of 800 nm to 1300 nm is 65% or less, the function of preventing voyeuristic photography using infrared rays can be maintained for a long period of time.

An object to be achieved by the invention is to provide an infrared-shielding fiber structure that does not deteriorate over time in its ability to prevent voyeuristic photography using infrared rays and that can also prevent discoloration of the knitted fabric over time, and clothing using the same.

The infrared-shielding fiber structure of the present invention is an infrared-shielding fiber structure obtained by processing infrared-shielding fibers containing, on a surface and/or inside thereof, infrared-shielding fine particles selected from tungsten oxide fine particles represented by the general formula WO.sub.X (where W is tungsten, O is oxygen, and 2.45X2.999) or composite tungsten oxide fine particles represented by the general formula M.sub.YWO.sub.Z (where element M is an element selected from Cs, Rb, K, Tl, In, etc.; 0.001Y1.0; and 2.2z3.0), wherein the particle size of the fine particles is 1 nm or more and 800 nm or less, and the content of the fine particles per unit area of the structure is 0.10 g/m.sup.2 or more and 4.5 g/m.sup.2 or less; because the average reflectance of the structure at wavelengths of 800 nm to 1300 nm is 65% or less, the function of preventing voyeuristic photography using infrared rays can be maintained for a long period of time.