Daily Archives: April 20, 2019

Thermodynamic magic enables cooling without energy consumption — ScienceDaily

Physicists at the University of Zurich have developed an amazingly simple device that allows heat to flow temporarily from a cold to a warm object without an external power supply. Intriguingly, the process initially appears to contradict the fundamental laws of physics. If you put a teapot of boiling water on the kitchen table, it…

Organic cathode offers more reliable contact with electrolyte, a key to stability — ScienceDaily

Solid-state sodium-ion batteries are far safer than conventional lithium-ion batteries, which pose a risk of fire and explosions, but their performance has been too weak to offset the safety advantages. Researchers Friday reported developing an organic cathode that dramatically improves both stability and energy density. The improved performance, reported in the journal Joule, is related…