Wood‐Derived Ultrathin Carbon Nanofiber Aerogels

Abstract

Carbon aerogels with 3D networks of interconnected nanometer-sized particles exhibit fascinating physical properties and show great application potential. Efficient and sustainable methods are required to produce high-performance carbon aerogels on al arge scale to boost their practical applications.A ne conomical and sustainable method is now developed for the synthesis of ultrathin carbon nanofiber (CNF) aerogels from the wood-based nanofibrillated cellulose (NFC) aerogels via ac atalytic pyrolysis process,w hich guarantees high carbon residual and well maintenance of the nanofibrous morphology during thermal decomposition of the NFC aerogels.T he wood-derived CNF aerogels exhibit excellent electrical conductivity,alarge surface area, and potential as ab inder-free electrode material for supercapacitors.T he results suggest great promise in developing new families of carbon aerogels based on the controlled pyrolysis of economical and sustainable nanostructured precursors.

Ultra‐High Surface Area Nitrogen‐Doped Carbon Aerogels Derived From a Schiff‐Base Porous Organic Polymer Aerogel for CO2 Storage and Supercapacitors

“…Over the last two decades, porous carbon aerogels have been actively studied for CO 2 capture as well as for supercapacitors because of their unique structural features such as large surface area, low density, high electrical conductivity, and stable physicochemical properties . To realize a large surface area of carbon aerogels, however, special processes such as activation, templating, freeze‐drying, and supercritical drying are usually involved .…”

Highly compressible and anisotropic lamellar ceramic sponges with superior thermal insulation and acoustic absorption performances

“…n recent years, various sponge-like materials, including carbon nanotube aerogels 1,2 , biomass-derived aerogels [3][4][5][6] , graphene aerogels [7][8][9][10][11][12] , ceramic nanofiber aerogels [13][14][15] , and carbon nanofiber aerogels [16][17][18] , have received significant interest owing to their high compressibility and resilience under large deformation, which results from their porous three-dimensional network structures. Among them, ceramic sponge materials have attracted more interest owing to their lightweight feature, high specific surface area, low thermal conductivity, and excellent chemical and thermal stability 13,14,19,20 .…”

Bio‐derived nanomaterials for energy storage and conversion

“…A common method of preparing materials from wood includes pyrolysis, resulting in a biochar with hierarchically structured pores. [ 63,64 ] Further, some notable examples of biomass starting material include coffee, [ 2–4,65 ] aloe vera, [ 66 ] pollen, [ 67 ] phytochemicals, [ 61,62 ] wood, [ 63,64,68,69 ] oatmeal, [ 70 ] bean sprouts, [ 71 ] and bamboo. [ 72,73 ] To summarize, a large number of nanostructures are possible from plant matter, including fibrous materials, [ 8,74 ] sheet‐like structures, [ 72 ] hierarchically porous materials, [ 2–4,63,65,75 ] and spherical particles.…”

“…Bioderived nanomaterials have been both directly and indirectly prepared from viruses, bacteria, fungi, protists, plants, and animals. [ 2–4,18,28,35,36,46–49,56,63–73,80–95 ] The different structures, from the many different templates, offer unique features that can benefit the performance of the material synthesized. [ 6 ] Classification of the various applications and the structural features of the materials produced from these sources plays an important role in understanding what types of applications each precursor may lend itself to.…”