Method for preparing methanol poisoning resistant cathode catalyst of fuel cell

Abstract

This invention relates to a process method of negative electrode catalyst used in fuel cell against methanol poisoning, which comprises the following steps: to dissolve the chloroplatinic acid and bismuth chloride into muriatic acid with mol proportion of one to 5; to add PVP with mol proportion of 15 to 1 with the sum of chloroplationic acid and bismuth chloride to get sol by adding sodium borohydride through mixture; to add one gram carbon power to each 10 ml acet and HNO#-[3] solvent and to each 6mol / L HNO#-[3] to get the pre-processed carbon powder; to add the powder into the sol for five to eight hours; then to bacon the sample with low voltage and rotation and to do the washing and vacuum drying.

Description

technical field [0001] The invention relates to a method for preparing a cathode catalyst for a fuel cell resistant to methanol poisoning—a carbon-supported nano-platinum-bismuth alloy / intermetallic compound catalyst, which belongs to the field of fuel cell material science and technology and the field of electrocatalysis. Background technique [0002] Proton exchange membrane fuel cell (PEMFC) is a device that directly converts chemical energy into electrical energy, and has high energy conversion efficiency because it is not limited by the Carnot cycle. Using hydrogen as fuel, oxygen or air as oxidant, and the main product is water, is an ideal environment-friendly energy conversion technology. In the 1990s, the research boom of direct methanol fuel cell (DMFC) was triggered. Compared with other types of fuel cells, the development of DMFC faces an obstacle - "methanol breakthrough" problem. This is because the Nafion membrane commonly used in DMFC has a high methanol pe...

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