In everyday life, materials that conduct electricity well, like metals, also tend to conduct heat. For instance, a metal spoon left in a hot cup of tea will get hot, while the ceramic mug remains cool. This is because good electrical conductors are usually good heat conductors too. However, researchers at Drexel University and Université catholique de Louvain (UCLouvain) in Belgium have discovered that MXenes, a type of material known for its excellent electrical conductivity, actually have very low thermal conductivity. This finding challenges the usual link between electrical and heat conduction. And the discovery could lead to new developments in building materials, performance apparel and energy storage solutions.
