MIT researchers have further improved the energy density of lithium-air batteries (Image: Jin Suntivich)
Particles of lithium peroxide form as small dots on the sides of carbon nanofibers (left), and eventually assume larger toroidal (donut) shapes as the battery continues to discharge (right) (Image: Mitchell, Gallant, and Shao-Horn)
Ions of lithium combine with oxygen from the air to form particles of lithium oxides, which attach themselves to carbon fibers on the electrode as the battery is being used (Image: Mitchell, Gallant, and Shao-Horn)
Last year MIT researchers reported improving the efficiency of lithium-air batteries through the use of electrodes with gold or platinum catalysts. MIT News is now reporting that in a continuation of that work, researchers have been able to further increase the energy storage capacity of lithium-air batteries for a given weight by creating carbon-fiber-based electrodes.
Other Images from this Gallery