摘要:
The present invention provides a method of preparing a negative active material for a rechargeable lithium battery, comprising the steps of: mixing a silicon precursor, a surfactant comprising an ammonium halide salt having a organic group, an initiator, and a solvent; heat-treating the mixture; cooling the heat-treated mixture to room temperature; washing the cooled, heat treated mixture; and calcining the washed product.
摘要:
The present invention provides a method of preparing a negative active material for a rechargeable lithium battery, comprising the steps of: mixing a silicon precursor, a surfactant comprising an ammonium halide salt having a organic group, an initiator, and a solvent; heat-treating the mixture; cooling the heat-treated mixture to room temperature; washing the cooled, heat treated mixture; and calcining the washed product.
摘要:
The present invention relates to a porous electrode used in a polymer electrolyte membrane fuel cell, and more particularly to a method of preparing a membrane-electrode assembly by forming a self-stand electrode layer by coating catalyst ink on a non-conductive substrate having a macropore and then joining it to a polymer electrolyte membrane. The porous self-stand electrode according to the present invention allows moisture and gas to be smoothly discharged and inflowed in a high current density operation region to improve the performance of a fuel cell, and can be freely cutted to simplify the preparation process of the membrane-electrode assembly.
摘要:
The present invention discloses a process for preparing catalyst solution for a membrane-electrode assembly in a fuel cell, which comprises the steps of a) mixing a catalyst solution (Solution A) wherein catalyst particles are dispersed in water and an ion conductive resin solution (Solution B) wherein an ion conductive resin is dissolved in water, low boiling point organic solvent or a mixture thereof, to form a dispersion; b) mixing the dispersion obtained from step a) with functional additive dissolved in high boiling point solvent or a mixture of low boiling point solvent arid water (Solution C) to prepare catalyst ink dispersion; and c) aging the catalyst ink dispersion obtained from step b).
摘要:
A golf swing action correcting unit, which gives information about a plurality of stages corresponding to a plurality of golf swing actions, comprises: a control unit for generating signals corresponding to the plurality of stages; and an information-giving unit for generating information by means of signals corresponding to one or more of the plurality of stages in accordance with the signals from the control unit.
摘要:
The present invention discloses a process for preparing catalyst solution for a membrane-electrode assembly in a fuel cell, which comprises the steps of a) mixing a catalyst solution (Solution A) wherein catalyst particles are dispersed in water and an ion conductive resin solution (Solution B) wherein an ion conductive resin is dissolved in water, low boiling point organic solvent or a mixture thereof, to form a dispersion; b) mixing the dispersion obtained from step a) with functional additive dissolved in high boiling point solvent or a mixture of low boiling point solvent arid water (Solution C) to prepare catalyst ink dispersion; and c) aging the catalyst ink dispersion obtained from step b).
摘要:
Disclosed is a fuel composition for fuel cells with improved performance. In order to efficiently remove undesirable intermediates of a fuel cell that uses liquid oxygenated hydrocarbons as fuel thereof, polyoxometalate as an oxidation assistant is directly added to the fuel cell. Herein, polyoxometalate includes at least one redox reactive anion caused by dissolution of polyoxometalate in an organic medium containing solution and/or an aqueous solution. The intermediates generated during activating the fuel cell are efficiently oxidized and, additionally, carbon monoxide with the property of catalyst poisoning of electrode catalyst is eliminated, thereby accomplishing improvements in poisoning resistance of the catalyst and, in turn, performance of the fuel cell.
摘要:
Disclosed herein is a media processing device using an external storage device. The media processing device includes a storage device access module, an information sourcing module, a program memory module, a system memory module, a signal processing module, a user interface module and a system control module. The system control module accesses the external storage device, reads file information, and constructs contents to be displayed. When the system control module receives a commend to select a media file, the system control module accesses the external storage device, searches for the selected media file, reads data of the searched media file, copies the read data, and provides the copied data to be decoded. When the system control module receives a commend to encode a signal, the system control module transmits the input signal to be encoded, constructs a media file from the encoded media data, positions the media file, copies the constructed media file when the external storage device is accessible through the storage device access module.
摘要:
Disclosed is a ramen cooker having a container identification function. The ramen cooker includes: an operation initiating unit that generates a purchase initiation signal showing an initiation of a ramen purchase operation in response to an external operation initiating action; a container identification unit that identifies the ramen container; a water injecting unit that injects water having a predetermined temperature into the ramen container in cases where the ramen container is determined to be purchased by the container identification unit; and a container heating unit that boils the ramen by applying heat to the ramen container injected with the water for a predetermined period of time and boiling the water in cases where the ramen container is determined to be purchased by the container identification unit. The ramen cooker according to the present invention cooks only a specific ramen container suitable for a specific ramen cooker and does not cook ramen in a non-related ramen container, and can thus prevent fires and fire-related accidents that may occur from injecting water into a non-cooking material or heating the water.
摘要:
A media processing device uses an external storage device. The media processing device includes a storage device access module, an information source, a program memory, a system memory, a signal processor, a user interface and a system controller. The system controller accesses the external storage device, reads file information, and constructs contents to be displayed. When the system controller receives a command to select a media file, the system controller accesses the external storage device, searches for the selected media file, reads data of the searched media file, copies the read data, and provides the copied data to be decoded. When the system controller receives a commend to encode a signal, the system controller controls the signal processor to encode the input signal into media data, constructs a media file from the encoded media data, positions the media file, and copies the constructed media file when the external storage device is accessible through the storage device access module.