Patent application number | Description | Published |
20140287337 | CARBON FIBER WEB INCLUDING POLYMER NANOFIBERS - Disclosed is a carbon fiber web including polymer nanofibers. Specifically, the carbon fiber web includes: a dispersed structure of carbon fibers; and polymer nanofibers distributed among and bonding the constituent carbon fibers of the dispersed structure. The carbon fiber web exhibits excellent characteristics in terms of flexural strength, gas permeability and electrical properties while possessing a tensile strength sufficient to undergo continuous processes for mass production. Also disclosed are a gas diffusion medium using the carbon fiber web, a gas diffusion layer including the gas diffusion medium, a membrane electrode assembly including the gas diffusion layer, and a fuel cell including the membrane electrode assembly. The use of the carbon fiber web ensures high performance of the membrane electrode assembly and the fuel cell. | 09-25-2014 |
20150102268 | Method For Producing Carbon Paper For Fuel Cell Diffusion Layer By Addition Of Conducting Polymer And Carbon Paper For Fuel Cell Diffusion Layer Produced By The Method - Disclosed is a carbon paper for a fuel cell gas diffusion layer. The carbon paper can be produced by baking and calcination at a low temperature. This low-temperature heat treatment can greatly reduce the production cost of the carbon paper. In addition, the carbon paper has superior gas permeability and electrical conductivity despite the greatly reduced production cost. The application of the carbon paper to a gas diffusion layer of a fuel cell contributes to reduced fabrication cost and improved quality of the fuel cell. Also disclosed is a method for producing the carbon paper. | 04-16-2015 |
20150179355 | STACK-TYPE FLOW ENERGY STORAGE SYSTEM AND METHOD OF CHARGING AND DISCHARGING ENERGY USING THE SAME - Disclosed herein is stack-type flow energy storage system. More particularly, the system includes a stack-type electrode cell composed of fluidic electrode material mixed with an electrolyte and storage tank for the electrode material, thereby remarkably improving stability, output and energy density. The stack-type flow energy storage system is advantageous in that unit cells, each consisting of a cathode, a separation membrane and an anode, are connected in parallel or in series to each other to make a stack cell, thus remarkably increasing output power. Further, the stack-type flow energy storage system is advantageous in that the sizes of slurry storage tanks connected to an electrode cell are adjusted, thus determining the required specification of energy density. | 06-25-2015 |
20160079612 | Carbon Paper With Conducting Polymers And Polyols For Fuel Cell And Preparation Method Thereof - A carbon paper for fuel cells includes a conductive polymer and a polyol having at least two —OH functional groups, and a method for producing the same. The method for producing the carbon paper for fuel cells provides carbon paper with high electroconductivity even when a heat treatment is carried out at low temperature. In addition, the temperature for heat treatment is reduced significantly as compared to conventional carbon paper, and thus it is possible to reduce the overall cost required for producing carbon paper for fuel cells. Further, the carbon paper for fuel cells obtained by the method has high flexibility with low brittleness. | 03-17-2016 |