Polymer/molecular semiconductor all-organic composites for high-temperature dielectric energy storage

Abstract Dielectric polymers for electrostatic energy storage suffer from low energy density and poor efficiency at elevated temperatures, which constrains their use in the harsh-environment electronic devices, circuits, and systems. Although incorporating insulating, inorganic nanostructures into dielectric polymers promotes the temperature capability, scalable fabrication of high-quality nanocomposite films remains a formidable challenge. Here, we report an all-organic composite comprising dielectric polymers blended with high-electron-affinity molecular semiconductors that exhibits concurrent high energy density (3.0 J cm −3 ) and high discharge efficiency (90%) up to 200 °C, far outperforming the existing…

• NN
  National Natural Science Foundation of China

  Awards: 51921005, 51922056 and 51777101, 51922056, 51777101