摘要:
Disclosed in the invention are a silicon-carbon composite anode material for lithium ion batteries and a preparation method thereof The material consists of a porous silicon substrate and a carbon coating layer. The preparation method of the material comprises preparing a porous silicon substrate and a carbon coating layer. The silicon-carbon composite anode material for lithium ion batteries has the advantages of high reversible capacity, good cycle performance and good rate performance. The material respectively shows reversible capacities of 1,556 mAh, 1,290 mAh, 877 mAh and 474 mAh/g at 0.2 C, 1 C, 4 C and 15 C rates; the specific capacity remains above 1,500 mAh after 40 cycles at the rate of 0.2 C and the reversible capacity retention rate is up to 90 percent.
摘要:
System and method for displaying three-dimensional object scattergrams of particles are provided. In one embodiment, at least two parameters associated with at least one particle in a biological sample are detected and stored as data. An initial two-dimensional scattergram of the data is created with the two dimensions corresponding to the two parameters, and each data point corresponding to a particle in the biological sample. A data point in the initial two-dimensional scattergram is categorized into a population corresponding to a particle population. A density value of the data point is evaluated. Color data for the data point is calculated based on the evaluated density value and the categorized population. A three-dimensional location is generated based on the location in the initial two-dimensional scattergram and a property of the data point. A geometric shape centered at the generated three-dimensional location is displayed using the calculated color data.
摘要:
An electrode is formed of a ternary composite of silicon, carbon, and carbon filter foil, for lithium ion batteries. Also described is a method for manufacturing silicon/carbon/carbon fiber foil composite electrode for lithium batteries, including: mixing silicon and an organic substance capable of forming carbon after heat treatment, in a solvent, to form a slurry; immersing the carbon fiber foil in said slurry until the slurry coats on and penetrates into the carbon fiber foil; and heating the carbon fiber foil, which has been coated and penetrated with the slurry, in an inert gas atmosphere or all inert gas atmosphere mixed with a reductive gas at a temperature of at least 400° C. for at least 2 hours.
摘要:
Disclosed in the invention are a silicon-carbon composite anode material for lithium ion batteries and a preparation method thereof The material consists of a porous silicon substrate and a carbon coating layer. The preparation method of the material comprises preparing a porous silicon substrate and a carbon coating layer. The silicon-carbon composite anode material for lithium ion batteries has the advantages of high reversible capacity, good cycle performance and good rate performance. The material respectively shows reversible capacities of 1,556 mAh, 1,290 mAh, 877 mAh and 474 mAh/g at 0.2 C, 1 C, 4 C and 15 C rates; the specific capacity remains above 1,500 mAh after 40 cycles at the rate of 0.2 C and the reversible capacity retention rate is up to 90 percent.