A New Type Proton Exchange Membrane Preparation of Doping Phosphotungstic Acid in High Temperature and Low Humidity

摘要

The energy of a proton exchange membrane fuel cell (PEMFC) as a pollution-free and efficient conversion device has broad application prospects in the new energy vehicles and other aspects. Improving PEMFC operating temperature is the main research directions. Proton exchange membrane, one of the key material of the PEMFC determines the operating temperature of the PEMFC. By mixing the proton exchange membrane with phosphotungstic acid (HPW) or other heteropolyacids with high proton conductivity and boiling point, can effectively enhance the membrane water retention to improve proton exchange membrane's conductivity at high temperature and low humidity. The main content of this paper is to prepare a new proton exchange membrane mixed with HPW and PHNT based on SPEEK. By adjusting the distribution of SPEEK, PHNT and HPW and taking proton exchange membrane characterization tests to obtain. Theoptimum distribution group's conductivity compared to pure SPEEK proton exchange membrane prepared has significantly increased by 36.39%.