Given the current increasingly serious energy crisis, the development and utilization of new energy resources are attracting increasing attention, and wind power is widely used among these renewable energy resources. However, the randomness of wind power can cause a series of problems in the...

A nano-magnetic catalyst KF/CaO-Fe3O4 was prepared by a facile impregnation method. The magnetic property of the catalyst was studied by vibrating sample magnetometer (VSM). The results demonstrated that the catalyst was ferromagnetic, and it could be recovered by magnetic separation. The...

Polymer electrolyte membrane (PEM) fuel cells, which convert the chemical energy stored in hydrogen fuel directly and efficiently to electrical energy with water as the only byproduct, have the potential to reduce our energy use, pollutant emissions, and dependence on fossil fuels. Great deal of...