Patent application number | Description | Published |
20110097627 | NEGATIVE ELECTRODE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERIES, MANUFACTURING METHOD THEREFOR, AND LITHIUM-ION SECONDARY BATTERIES - The present invention is a negative electrode material for non-aqueous electrolyte secondary batteries, comprising at least: particles wherein silicon nanoparticles are dispersed in silicon oxide (silicon oxide particles); and a metal oxide coating formed on a surface of the silicon oxide particles. As a result, there is provided a negative electrode material for non-aqueous electrolyte secondary batteries that enables the production of a negative electrode suitable for lithium-ion secondary batteries and the like that provides improved safety and cycle performance over conventional negative electrode materials. | 04-28-2011 |
20110287317 | METHOD FOR MANUFACTURING NEGATIVE ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, NEGATIVE ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, NEGATIVE ELECTRODE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, NEGATIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - The present invention is a method for manufacturing a negative electrode active material for a non-aqueous electrolyte secondary battery comprising at least depositing silicon on a substrate by vapor deposition by using a metallic silicon as a raw material, the substrate having a temperature controlled to 300° C. to 800° C. under reduced pressure, and pulverizing and classifying the deposited silicon. As a result, there is provided a method for manufacturing a negative electrode active material composed of silicon particles that is an active material useful as a negative electrode of a non-aqueous electrolyte secondary battery in which high initial efficiency and high battery capacity of silicon are kept, cycle performance is superior, and an amount of a change in volume decreases at the time of charge and discharge. | 11-24-2011 |
20120258371 | METHOD FOR MANUFACTURING NEGATIVE ELECTRODE ACTIVE MATERIAL FOR USE IN NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, NEGATIVE ELECTRODE MATERIAL FOR USE IN NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - The present invention provides a method for manufacturing a carbon-coated negative electrode active material for use in a non-aqueous electrolyte secondary battery, wherein a negative electrode active raw material including at least one of silicon oxide powder and silicon powder is coated with carbon by a catalytic CVD method. The present invention also provides a negative electrode material for use in a non-aqueous electrolyte secondary battery and a non-aqueous electrolyte secondary battery using the negative electrode active material. As a result, there is provided a method for manufacturing a negative electrode active material for use in a non-aqueous electrolyte secondary battery in which high battery capacity given by the silicon-based active material is maintained and a volume expansion and a break in the active material are suppressed. | 10-11-2012 |
20130078516 | NEGATIVE ELECTRODE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - The present invention provides a negative electrode material for a non-aqueous electrolyte secondary battery that includes particles of a silicon-based active material, the particles of a silicon-based active material being coated with a film of an organosilicon compound that contains a perfluoropolyether group, and a non-aqueous electrolyte secondary battery therewith. As a result, there is provided a negative electrode material for a non-aqueous electrolyte secondary battery that is high in capacity, excellent in initial charge/discharge efficiency and cycle characteristics and high in safety and reliability, and a non-aqueous electrolyte secondary battery that uses the negative electrode material. | 03-28-2013 |
20130108923 | NEGATIVE ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME | 05-02-2013 |
20130334468 | NEGATIVE ELECTRODE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME - The present invention provides a method for manufacturing a negative electrode material for a nonaqueous electrolyte secondary battery, which includes the steps of: preparing silicon nanoparticles; manufacturing the silicon-carbon composite material that contains the silicon nanoparticles and a carbonaceous material; and heat-compressing the silicon-carbon composite material. As a result, there is provided a negative electrode material for a nonaqueous electrolyte secondary battery, which has a high capacity and excellent initial charge/discharge efficiency and cycle characteristics and a method for manufacturing the same, and a nonaqueous electrolyte secondary battery that uses the negative electrode material for a nonaqueous electrolyte secondary battery. | 12-19-2013 |
20140038050 | SILICON-CONTAINING PARTICLES, NEGATIVE ELECTRODE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY USING THE SAME, NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND METHOD OF MANUFACTURING SILICON-CONTAINING PARTICLES - The present invention intends to provide silicon-containing particles that, when used as a negative electrode active material for a nonaqueous electrolyte secondary battery, can form a nonaqueous electrolyte secondary battery that is less in volume change during charge/discharge and has high initial efficiency and excellent cycle characteristics. The present invention provides silicon-containing particles that are used as a negative electrode active material for a nonaqueous electrolyte secondary battery and have a diffraction line with a peak at 2θ=28.6° in X-ray diffractometry, a negative electrode material for a nonaqueous electrolyte secondary battery therewith, a nonaqueous electrolyte secondary battery, and a method of manufacturing the silicon-containing particles. | 02-06-2014 |
Patent application number | Description | Published |
20090209490 | DISINFECTANT COMPOSITION - Disinfectant composition comprising slightly acidic electrolyzed water and 0.001-1.0 wt % of a polyether-modified silicone of formula (1) or formula (2) | 08-20-2009 |
20090239151 | NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, NEGATIVE ELECTRODE MATERIAL, AND MAKING METHOD - A negative electrode material comprising an active material and 1-20 wt % of a polyimide resin binder is suitable for use in non-aqueous electrolyte secondary batteries. The active material comprises silicon oxide particles and 1-50 wt % of silicon particles. The negative electrode exhibits improved cycle performance while maintaining the high battery capacity and low volume expansion of silicon oxide. The non-aqueous electrolyte secondary battery has a high initial efficiency and maintains improved performance and efficiency over repeated charge/discharge cycles by virtue of mitigated volumetric changes during charge/discharge cycles. | 09-24-2009 |
20100055563 | NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, NEGATIVE ELECTRODE, NEGATIVE ELECTRODE MATERIAL, AND PREPARATION OF SI-O-AL COMPOSITE - An Si—O—Al composite comprising silicon, silicon oxide, and aluminum oxide exhibits a powder XRD spectrum in which the intensity of a signal of silicon at 28.3° is 1-9 times the intensity of a signal near 21°. A negative electrode material comprising the Si—O—Al composite is used to construct a non-aqueous electrolyte secondary battery which is improved in 1st cycle charge/discharge efficiency and cycle performance while maintaining the high battery capacity and low volume expansion upon charging of silicon oxide. | 03-04-2010 |
20140377647 | ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, NEGATIVE ELECTRODE FORM, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - An active material comprising silica-attached particles in the form of host particles of silicon or silicon compound having spherical silica nano-particles attached to surfaces thereof is suited for use in nonaqueous electrolyte secondary batteries. The spherical silica nano-particles have an average particle size of 5-1000 nm, a particle size distribution D | 12-25-2014 |