National Institute of Clean-and-low-carbon Energy

China Energy Investment Corporation Limited

Shenhua Group Corporation Limited

Wenbin Liang

Chang Wei

Guanghong Pan

Kun Tang

Libin Kang

Yanhua Niu

Shih-yaw Lai

Chunting Duan

Xuelian Chen

Yajun Tian

Danmiao Kang

Peng Liang

Qinghua Liu

Wenqiang Xu

Junqing Liu

John P Lemmon

Yonglong Li

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

A flow battery field, an electrode slurry, a slurry electrode, a flow battery, and a stack are disclosed. The electrode slurry comprising electrode particles and electrolyte that contains active substance. Based on 100 pbw active substance, the electrode particles are 10-1,000 pbw. The slurry electrode comprises: a bipolar plate, a current collector, and a slurry electrode reservoir configured to store electrode slurry. In the two opposite sides of the bipolar plate, one side is adjacent to the current collector, and the other side is arranged with a slurry electrode cavity, and flow channels are arranged and extended between the bipolar plate and the slurry electrode cavity, so that the electrode slurry is circulated between the slurry electrode cavity and the slurry electrode reservoir. A flow battery that employs the electrode slurry can provide higher and more stable power output under the same current condition and is lower in cost.

Electrode slurry, slurry electrode, flow battery and stack

A crosslinked polyethylene composition comprising 100 parts by weight of polyethylene, 0.05-5 parts by weight of crosslinking agent, 0.03-3 parts by weight of crosslinking aid. Polyethylene is a copolymer, homopolymer and/or a mixture thereof. The crosslinking agent is an organic peroxide having a half-life period longer than 3 minutes at 190&#xb0; C. and/or a multi-membered heterocyclic alkane consisting of 3 to 6 carbon atoms and 3 to 6 oxygen atoms and/or a derivative thereof. The crosslinking aid is an organic substance containing allyl, maleimido, (meth)acrylate group and/or a polymer having a vinyl content higher than 50%. Preferably, the crosslinking aid is triallyl isocyanate (TAIC), triallyl cyanurate (TAC) or a mixture thereof. The crosslinked polyethylene composition has a crosslinking efficiency index &#x3e;1000 Nm/g and a &#x3b4; torque value &#x3e;15 Nm at 220&#xb0; C., and has a high safe processing temperature and long crosslinking delay, and therefore is particularly suitable for rotationally molded products.

Crosslinked polyethylene composition

Disclosed in the present invention is a crosslinked polyethylene composition having improved processability comprises: 100 parts by weight of polyethylene, 0.03-5 parts by weight of crosslinking agent, 0.03-5 parts by weight of crosslinking promoter, and 0.01-1.5 parts by weight of free radical inhibitor, wherein the polyethylene is a copolymer and/or homopolymer containing at least 90 wt. % of vinyl and at least one C-C&#x3b1;-alkenyl, and has a density in the range of 0.920-0.970 g/cm, a melt index in the range of 2.5-17.5 g/10 min; the crosslinking agent is a peroxide crosslinking agent; the crosslinking promoter is an organic substance containing maleimido, (meth)acrylate group, and/or allyl, and/or a polymer containing more than 50% of vinyl; the free radical inhibitor is an organic antioxidant, a quinhydrone and/or a substituted quinhydrone. The crosslinked polyethylene composition of the present invention has a crosslinking efficiency index of more than 1,100 Nm/g and a &#x3b4; torque value of more than 10 Nm at the temperature of 200&#xb0; C., a significantly higher safety process temperature and a significantly improved crosslinking retardation time compared to the conventional crosslinked polyethylene composition, which make it especially be suitable for the production of rotational molding articles.

Crosslinked polyethylene composition having improved processability

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Beijing, China

Wenbin Liang