Laying down a discerning membrane
Hydrogen and helium pass relatively easily through the membrane, but carbon dioxide, oxygen, nitrogen ... Gas molecules are looking for holes anywhere they can be found, and in a membrane made up of graphene oxide flakes, there would be two likely places ...
How Fuel Cells Work - VIDEO ENHANCED
The Polymer Electrolyte Membrane (PEM) allows only the positively charged ions to pass through ... carbon dioxide (a greenhouse gas), though less than that emitted from current gasoline-powered engines. Most fuel cells are powered by hydrogen, which can ...
Oxygen-separation Membranes Could Aid in CO2 Reduction
The centerpiece of the system is a ceramic membrane used to separate oxygen from air. Burning fuels in pure oxygen, as opposed to air - a process known as oxyfuel combustion - can yield a pure stream of carbon dioxide ... as air passes through a membrane ...
Oxygen-separation membranes could aid in CO2 reduction
Burning fuels in pure oxygen, as opposed to air — a process known as oxyfuel combustion — can yield a pure stream of carbon dioxide ... as air passes through a membrane, oxygen accumulates on the opposite side, ultimately slowing the air-separation ...
Can We Turn Unwanted Carbon Dioxide Into Electricity?
Researchers are developing a new kind of geothermal power plant that will lock away unwanted carbon dioxide (CO2) underground – and use it as a tool to boost electric power generation by at least 10 times compared to existing geothermal energy approaches.