摘要:
Provided is a fuel composition for a fuel cell including a first fuel which generates protons and electrons, and hydrogen gas. Also, provided is a fuel cell using the fuel composition. Using the fuel composition for a fuel cell, catalyst activation can be increased. Also, a fuel cell having high efficiency and excellent performance can be prepared using the fuel composition.
摘要:
A method of preparing a supported catalyst includes dissolving a cation exchange polymer in alcohol to prepare a solution containing cation exchange polymer; mixing the cation exchange polymer containing solution with a catalytic metal precursor or a solution containing catalytic metal precursor; heating the mixture after adjusting its pH to a predetermined range; adding a reducing agent to the resultant and stirring the solution to reduce the catalytic metal precursor; mixing the resultant with a catalyst support; adding a precipitating agent to the resultant to form precipitates; and filtering and drying the precipitates. The method of preparing a supported catalyst can provide a highly dispersed supported catalyst containing catalytic metal particles with a reduced average size regardless of the type of catalyst support, which provides better catalytic activity than conventional catalysts at the same loading amount of catalytic metal.
摘要:
The present invention provides a simple method of mass producing high purity carbon nanocages. The method of preparing carbon nanocages comprises introducing an inert gas into a reactor equipped with a spray nozzle and raising the temperature of the reactor to a pyrolysis temperature of a catalyst compound. The method further comprises spraying a reactant including the catalyst compound and a carbon-containing compound into the reactor through the spray nozzle, wherein the ratio of a space velocity of the inert gas to a space velocity of the reactant is 100 or more.
摘要:
Provided are aligned carbon nanotubes for a fuel cell having a large surface area, a nanocomposite that includes the aligned carbon nanotubes loaded with highly dispersed nanoparticles of a metallic catalyst, methods of producing the carbon nanotubes and the nanocomposite, and a fuel cell including the nanocomposite. In the nanocomposite, nanoparticles of the metallic catalyst are uniformly distributed on external walls of the nanotubes. A fuel cell including the nanocomposite exhibits better performance.
摘要:
A fuel composition for a fuel cell includes at least one primary fuel that produces protons and electrons, and at least one peroxide. As an example, the primary fuel may be at least one aqueous solution containing methanol, ethanol, or formic acid. When the fuel composition is used, the catalytic activity can increase, and thus a fuel cell having improved performance can be manufactured.
摘要:
Provided is a fuel composition for a fuel cell including a first fuel which generates protons and electrons, and hydrogen gas. Also, provided is a fuel cell using the fuel composition. Using the fuel composition for a fuel cell, catalyst activation can be increased. Also, a fuel cell having high efficiency and excellent performance can be prepared using the fuel composition.
摘要:
A carbon nanosphere has at least one opening. The carbon nanosphere is obtained by preparing a carbon nanosphere and treating it with an acid to form the opening. The carbon nanosphere with at least one opening has higher utilization of a surface area and electrical conductivity and lower mass transfer resistance than a conventional carbon nanotube, thus allowing for higher current density and cell voltage with a smaller amount of metal catalyst per unit area of a fuel cell electrode.
摘要:
A catalyst particle having high oxygen reduction reactivity and low methanol oxidation reactivity, a supported catalyst comprising the catalyst particle, and a fuel cell using a cathode comprising the supported catalyst are provided. The whole catalyst particle or at least the surface of the catalyst particle includes an alloy of two or more metals selected from the group consisting of Fe, Co, Ni, Rh, Pd, Pt, Cu, Ag, Au, Zn, and Cd. The alloy has a stronger oxygen-binding force than platinum or a weaker hydrogen-binding force than platinum.
摘要:
Provided are aligned carbon nanotubes for a fuel cell having a large surface area, a nanocomposite that includes the aligned carbon nanotubes loaded with highly dispersed nanoparticles of a metallic catalyst, methods of producing the carbon nanotubes and the nanocomposite, and a fuel cell including the nanocomposite. In the nanocomposite, nanoparticles of the metallic catalyst are uniformly distributed on external walls of the nanotubes. A fuel cell including the nanocomposite exhibits better performance.
摘要:
A fuel composition for a fuel cell includes at least one primary fuel that produces protons and electrons, and at least one peroxide. As an example, the primary fuel may be at least one aqueous solution containing methanol, ethanol, or formic acid. When the fuel composition is used, the catalytic activity can increase, and thus a fuel cell having improved performance can be manufactured.