摘要:
A lithium ion secondary cell having a high capacity, improved first charge/discharge efficiency and improved cycle performance is obtainable using as the negative electrode material a lithium-containing silicon oxide powder having the formula: SiLixOy wherein x and y are 0
摘要:
A silicon composite comprises silicon particles whose surface is at least partially coated with a silicon carbide layer. It is prepared by subjecting a silicon powder to thermal CVD with an organic hydrocarbon gas and/or vapor at 900-1,400° C., and heating the powder for removing an excess free carbon layer from the surface through oxidative decomposition.
摘要:
Silicon composite particles are prepared by sintering primary fine particles of silicon, silicon alloy or silicon oxide together with an organosilicon compound. Sintering of the organosilicon compound results in a silicon-base inorganic compound which serves as a binder. Each particle has the structure that silicon or silicon alloy fine particles are dispersed in the silicon-base inorganic compound binder, and voids are present within the particle.
摘要:
A non-aqueous electrolyte secondary battery negative electrode material is provided wherein a negative electrode active material containing a lithium ion-occluding and releasing material which has been treated with an organosilicon base surface treating agent is surface coated with a conductive coating. Using the negative electrode material, a lithium ion secondary battery having a high capacity and improved cycle performance is obtainable.
摘要:
A metallic silicon-containing composite in which metallic silicon nuclei are coated with an inert material which does not contribute to adsorption and desorption of lithium ions is a useful negative electrode material for lithium ion secondary batteries. Using the composite as a negative electrode active material, a lithium ion secondary battery having a high capacity and excellent cycle performance can be fabricated.
摘要:
A silicon composite comprises silicon particles whose surface is at least partially coated with a silicon carbide layer. It is prepared by subjecting a silicon powder to thermal CVD with an organic hydrocarbon gas and/or vapor at 900-1,400° C., and heating the powder for removing an excess free carbon layer from the surface through oxidative decomposition.
摘要:
A conductive silicon composite in which particles of the structure that silicon crystallites are dispersed in silicon dioxide are coated on their surfaces with carbon affords satisfactory cycle performance when used as the negative electrode material in a non-aqueous electrolyte secondary cell.
摘要:
Silicon composite particles are prepared by sintering primary fine particles of silicon, silicon alloy or silicon oxide together with an organosilicon compound. Sintering of the organosilicon compound results in a silicon-base inorganic compound which serves as a binder. Each particle has the structure that silicon or silicon alloy fine particles are dispersed in the silicon-base inorganic compound binder, and voids are present within the particle.
摘要:
An organopolysiloxane composition comprising (A) an organopolysiloxane having at least two aliphatic unsaturated radicals attached to different silicon atoms per molecule, (B) an organic silicon compound having at least two .tbd.SiH bond per molecule, and (C) a platinum catalyst is improved in curing behavior including pot life and curing time as well as release properties by adding thereto (D) an addition reaction controlling agent in the form of an isothiocyanate such as allyl, ethyl and phenyl isithiocyanates.
摘要:
An air bag coating composition is provided in the form of an aqueous silicone emulsion composition comprising (A) an aqueous emulsion of a hydroxyl-containing organopolysiloxane, (B) a reaction product of an amino functional silane or a hydrolyzate thereof with an acid anhydride, an epoxy-functional silane or a hydrolyzate thereof, or an organosilane having an isocyanate radical and a hydrolyzable radical in a molecule or a hydrolyzate thereof, (C) colloidal silica, and (D) a curing catalyst. The composition is applied and cured to an air bag base fabric to form a tack-free, crack resistant coating thereon.