Synergistic WO-PBI hybrid electrochromic materials with an enhanced diffusion coefficient and cycling reversibility inspired by the "Big Rocks" theory.

The key technology underlying intelligent energy conversion and display systems hinges on high-performance electrochromic materials. To drive their electrochemical redox reactions, facilitating ion/electron transport and intercalation/deintercalation the rational design of a highly connected electrode structure is critical. However, persistent challenges include inadequate interconnection between active species - stemming from the inherent limitations of simple inorganic materials and severe performance degradation during long-term electrochemical cycling.

Structural design and enhanced electrochromic properties of thiophene-based covalent organic framework.

Covalent organic framework (COF) materials are a class of porous organic polymers with crystal structures connected through strong covalent bonds. Due to the diversity as well as designability of their structural units, the framework structure can be precisely regulated at the atomic level through the combination of virus-active building units. In particular, the advantages of COF materials, such as designable space structure, regular pore structure, high specific surface area, low density, high thermal stability, and chemical stability, make it one of the ideal materials in the field of optoelectronic materials.