May 2013 : Cold fusion reactor independently verified, has 10,000 times the energy density of gas. Against all probability, a device that purports to use cold fusion to generate vast amounts of power has been verified by a panel of independent scientists.
Folding batteries increases their areal energy density by up to 14 times. By folding a paper-based Li-ion battery in a Miura-ori pattern (similar to how some maps are folded), scientists have shown that the battery exhibits a 14x increase in areal energy density and capacity due to its smaller footprint.
The float or Sink poster shows the basic idea of what Density is. Includes examples of items that sink or float and a basic definition of density. Meets Texas 5th grade Science TEK 5.5A .Sink or Float Poster by Debra Finney is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.
Sodium-ion battery cathode has highest energy density to date. —Although sodium-ion (Na-ion) batteries don't perform as well as lithium-ion (Li-ion) batteries, they have the potential to be a cheaper alternative. In a new study, scientists have designed a new cathode for Na-ion batteries that provides an energy density of 600 Wh kg-1, which is the highest reported so far for Na-ion batteries and even rivals the energy densities of some Li-ion batteries.