Method and apparatus of preparing catalyst for fuel cell
AssigneesHyundai Motor Company, Kia Motors Corporation, Pusan National University Industry-University Cooperation Foundation
InventorsWoong Pyo Hong, Se Hun Kwon, Woo Jae Lee
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Abstract
A method for producing a catalyst for a fuel cell comprising: a) injecting carbon particles into a fluidized bed reactor; b) evacuating the fluidized bed reactor to form a base pressure; c) introducing a catalytic metal precursor together with a carrier gas into the fluidized bed reactor to contact the catalytic metal precursor with the carbon particles; d d) purging a purge gas into the fluidized bed reactor; e) introducing a reaction gas into the fluidized bed reactor to attach the catalytic metal precursor to the carbon particles; and f) purging a purge gas into the fluidized bed reactor, wherein, the catalytic metal is attached to the carbon particles in a form of nano-sized spot.
Claims14
A method for producing a catalyst for a fuel cell comprising:
- a) injecting carbon particles into a fluidized bed reactor;
- b) evacuating the fluidized bed reactor to form a base pressure;
- c) introducing a catalytic platinum precursor together with a carrier gas into the fluidized bed reactor to contact the catalytic platinum precursor with the carbon particles;
- d) purging a purge gas into the fluidized bed reactor;
- e) introducing a reaction gas into the fluidized bed reactor to attach the catalytic platinum precursor to the carbon particles;
- and
- f) purging a purge gas into the fluidized bed reactor,
- wherein, a catalytic platinum having a nano-sized diameter is attached to the carbon particles,
- the catalyst includes a carbon particle and the catalytic platinum,
- a diameter of the catalytic platinum is 1 to 5 nm,
- the step c) is performed for 90 to 150 seconds,
- the step d) is performed for 60 to 120 seconds,
- the step e) is performed for 60 to 120 seconds,
- the step (f) is performed for 60 to 120 seconds,
- an internal pressure of the fluidized bed reactor of steps c) to f) is 1 to 5 Torr,
- the purge gas inflow rate is 50 to 200 standard cubic centimeter per minute (sccm), and
- a flow rate of the reaction gas is 10 to 200 sccm.
Dependencies are inferred from the claim text.