Thermally insulating and electroactive cellular nanocellulose composite cryogels from hybrid nanofiber networks

Cellulose-based xerogels, cryogels and aerogels have been proposed to deliver the functions required by next-generation wearable electronics energy materials. However, such systems often lack functionality present limited mechanical resilience. Herein, we introduce a simple strategy synthesize high-performance that combine cellulose silica nanofibers form ice-templated cellular architectures. Specifically, dual networks are produced incorporating organic (cellulose) inorganic (silica) highly interconnected vertically-aligned channels. Hence, ultralight structures (7.37 mg cm−3 in density porosity of 99.37%) with high strength, compressibility (dimensional recovery up 90%) fatigue resistance (1000 loading cycles) along low thermal conductivity (29.65 mW m−1K−1). Electrical responsiveness is supplemented situ polymerization pyrrole, ensuing operation wide load range (0–18 kPa sensitivity 6.63 kPa−1 during > 1000 cycles). The obtained insulating electroactive materials demonstrated for under extreme conditions (solvent temperature). Overall, our network system provides universal, multifunctional platform can substitute state-of-the-art carbonized or carbon-based light-weight