Magnetic field measurements reveal internal current distribution in fuel cells

Magnetic field measurements reveal internal current distribution in fuel cells

Proton-exchange membrane fuel cells are promising clean power-generation technologies that do not emit carbon dioxide during operation. However, issues such as flooding (i.e., the accumulation of water generated during operation) and dry-out (i.e., when the electrolyte membrane becomes dehydrated) can result in an uneven internal current distribution. This uneven distribution can impair cell performance and accelerate localized material degradat…

A Fuel Cell’s Magnetic Field Could Reveal Trouble Inside

A fuel cell can look perfectly normal from the outside while trouble develops within it. Water may collect in one area, or a part that needs moisture may become too dry. Either problem can disrupt how electricity flows and cause some parts of the cell to wear out faster. Researchers at the University of Tsukuba […]