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一种具有可调空腔的高首效三维SnS2石墨烯锂离子电池负极材料的制备方法

Resumen de: CN119852367A

本发明为一种具有可调空腔的高首效三维SnS2石墨烯锂离子电池负极材料的制备方法。该发明以PS球体作为模板，通过静电结合作用得到与PS球体混合均匀的金属盐与氧化石墨烯的混合分散液，经过一步煅烧，最终得到具有内部锚定SnS2空腔的三维石墨烯结构。本发明无需除杂过程，由复合材料组装的锂离子电池在0.2A g‑1时首次放电容量高达1633mA h g‑1，循环100次后的可逆比容量达到1215mA h g‑1，首次库伦效率高达88％，在低电流密度下呈现出优异的循环稳定性和较高的可逆比容量。

GRAPHENE-LIKE ULTRATHIN NITROGEN-DOPED CARBON NANOSHEET, AND PREPARATION METHOD THEREFOR, AND USE THEREOF

Resumen de: WO2025077127A1

Disclosed in the present invention are a graphene-like ultrathin nitrogen-doped carbon nanosheet, and a preparation method therefor, and the use thereof. The graphene-like ultrathin nitrogen-doped carbon nanosheet is prepared by means of high-temperature pyrolysis by using waste as a carbon source and urea as a nitrogen source, the waste comprising any one of glucose, fructose, cellulose, lignin, 5-hydroxymethylfurfural and straws. In addition, in the present invention, the prepared graphene-like ultrathin nitrogen-doped carbon nanosheet is applied to an electrocatalytic reaction to catalyze conversion of 5-hydroxymethylfurfural into 2,5-furandicarboxylic acid, achieving a good electrocatalytic conversion effect. Compared with the prior art, the preparation of the graphene-like ultrathin nitrogen-doped carbon nanosheet in the present invention involves a simple and convenient process, requires preparation raw materials that are widely available and inexpensive, and achieves environmental friendliness and allows for large-scale production, and in addition, the graphene-like ultrathin nitrogen-doped carbon nanosheet prepared in the present invention has small thickness, good electrocatalytic conversion effect and high economic benefits, thus having wide application prospects and great market potential.

CARBON NANOTUBE DISPERSED COMPOSITION, CARBON NANOTUBE RESIN COMPOSITION, MIXTURE SLURRY, ELECTRODE FILM, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

Resumen de: EP4538228A1

To provide a carbon nanotube dispersion composition able to improve battery performance. Provided is a carbon nanotube dispersion composition including carbon nanotubes, a dispersant, and a solvent and satisfying (1) and (2) as follows:(1) an average outer diameter of the carbon nanotubes calculated from an SEM image obtained by observing the carbon nanotubes included in the carbon nanotube dispersion composition is 15 nm or more and 50 nm or less; and(2) when a target pixel group in the SEM image obtained by observing the carbon nanotubes included in the carbon nanotube dispersion composition is set as the carbon nanotubes, and a value obtained by dividing a distance between two points that are farthest apart, that is, an absolute maximum length, by a length of a free curve, that is, a skeleton length, is set as linearity, a proportion of carbon nanotubes with a linearity of 0.9 or more among carbon nanotubes with a skeleton length of 1 µm or more is 40% or more and 90% or less.

カーボンナノチューブおよびそれを含む分散液

Nº publicación: JP2025511485A 16/04/2025

Solicitante:

エルジー・ケム・リミテッド

Resumen de: TW202434521A

The present invention relates to carbon nanotubes that satisfy a specific equation. The carbon nanotubes of the present invention have both excellent dispersibility and electrical conductivity when applied as a dispersion, and thus, are particularly suitable for use as a conductive material in secondary batteries.