National Institute of Clean-and-Low-Carbon Energy

China Energy Investment Corporation Limited

Guanghong Pan

Wenbin Liang

Chang Wei

Kun Tang

Yajun Tian

Danmiao Kang

Chunting Duan

Libin Kang

Peng Liang

Junqing Liu

Dongfang Zheng

The present disclosure relates to the field of carbon materials, in particular to an amorphous carbon material and a preparation method and an use thereof. The amorphous carbon material has the following characteristics: (1) the true density ρ of the amorphous carbon material and the interlayer spacing dobtained by powder XRD spectrum analysis satisfy the relational formula:×ρ×d≥70; (2) the interlayer spacing d, Land Lsatisfy the following relational formula: Lλd≤0.58; and 100×(L/L)×d≤0.425; (3) the amorphous carbon material contains 0.001-2% of a silicon component and 0.001-2% of an aluminum component, based on the total mass of the amorphous carbon material. The amorphous carbon material prepared by the present disclosure has desirable heat transfer performance and can provide high battery capacity.

Amorphous carbon material, preparation method and use thereof

The present disclosure relates to the field of carbon materials, in particular to an amorphous carbon material and a preparation method and an application thereof. The amorphous carbon material has the following characteristics: (1) a true density ρ of the amorphous carbon material and a interlayer spacing dobtained by powder X-Ray Diffraction (XRD) spectrum analysis satisfy the following relational formula: 100×ρ×d≥70; (2) the interlayer spacing d, Land Lof the amorphous carbon material obtained by powder XRD spectrum analysis satisfy the following relational formula: L×d≤0.58, and 100×(L/L)×d≤0.425 wherein ρ is denoted by the unit of g/cm, each of d, Land Lis denoted by the unit of nm. The amorphous carbon material prepared by the present disclosure has desirable heat transfer performance and can provide high battery capacity.

Amorphous carbon material, prepared by subjecting mixture of carbonaceous material and aqueous solution to phase separation and drying, preparation method and use thereof

The present disclosure relates to the field of carbonaceous composite materials, in particular to a silicon-carbon composite material and a preparation method and a use thereof. The silicon-carbon composite material comprises a composite carbon material and nanometer silicon dispersed therein, wherein the composite carbon material is consisting of a graphitic crystal phase and an amorphous carbon phase, wherein the ratio I/Iof the peak intensity Iof the graphite crystal phase (002) plane relative to the peak intensity Iof the amorphous carbon phase as measured by the X-Ray Diffraction (XRD) is within a range of 0.1-40, the graphite crystalline phase is uniformly dispersed in the composite material, the dispersion coefficient &#x3b4; of the ratio Id/Ig of Id and Ig as measured by Raman data is less than 0.8. The silicon-carbon composite material provided by the present disclosure can be used as an anode material of a lithium ion battery, such that the lithium ion battery has desirable first charge and discharge performance and cycle stability, and the service life of the lithium ion battery can be prolonged.

Silicon-carbon composite material and preparation method and use thereof

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Beijing, China

Guanghong Pan