Highly Conductive Cellulose Network/Polyaniline Composites Prepared by Wood Fractionation and In Situ Polymerization of Aniline

Abstract

Highly conductive cellulose network/polyaniline (PANI) composites are successfully formed using chemical fractionation of solid wood followed by in situ polymerization of aniline monomers in the purified wood. The increased porosity of the wood caused by the fractionation process enables the uniform deposition of PANI particles in the microstructure of the material, resulting in a high electrical conductivity of up to 36.79 S cm−1, and a high weight gain rate of up to 143%. The interaction between PANI and the cellulose microfibril network leads to a decreased crystallinity of the composites. The electrode prepared from the cellulose network/PANI composites exhibits promising gravimetric specific capacitances of up to 218.75 F g−1 and areal specific capacitances of up to 0.41 F cm−2, and it can be assembled into all‐solid‐state supercapacitors with favorable energy storage performance, which may be attributed to the larger surface area, higher PANI content of the electrode, and the positive effect of the cellular structure of the cellulose network on electron transport. The present process can preserve the naturally hierarchical structure of wood and impart a promising conductivity to the composites, and it provides a promising way to produce hierarchical biomass‐based electronic materials for high‐performance storage field.

Ultraflexible all-in-one supercapacitors with high capacitance and ultrastable cycle performance enabled by wood cellulose network

“…It is a promising concept to use wood as a template to produce electrode materials due to the naturally complex meshstructures of Materials Advances Accepted Manuscript 4 wood, which can provide a series of microreactors for other polymers or functional materials to form directional and functional composites 15,16 . Recently, we prepared a highly conductive cellulose network/polyaniline composite as a promising electrode material by removing hemicellulose and lignin from wood while retaining the cellulosic skeleton structure of the wood 17 . However, cellulose network-based conductive composites have poor flexibility due to the stiffness of the original wood.…”

Novel Nanocellulose/Polymer Composite Aerogel as Solid‐State Fluorescence Probe by Pickering Emulsion Route

“…As shown in Figure S5a (Supporting Information), in the CNF spectrum, there are absorption peaks near 3350, 2900, and 1058 cm −1 , which correspond to the OH, CH, and COC stretching vibrations of the pyran ring, respectively. [37] The characteristic absorption peak of PLA appears at 1750 cm −1 , corresponding to the stretching vibration of CO in PLA. [38] Notably, in the infrared spectrum of the A-CNF/PLA-2 composite aerogel, the characteristic absorption peaks corresponding to the above-mentioned group were simultaneously observed, which indicates the presence of both CNF and PLA in the composite aerogel ( Figure S5a, Supporting Information).…”

Flexible Conductive Cellulose Network-Based Composite Hydrogel for Multifunctional Supercapacitors

“…SEM Figure 2 shows the morphology of the products during the preparation process of the CPP composite hydrogel. The naturally porous structure of the cellulose network makes it an excellent substrate for the construction of electrode materials and energy storage devices [12]. It has been reported that the interaction between conductive PAM hydrogel and cellulose can improve the transparency, mechanical properties, and electrical properties [18].…”

“…WO 3 is generally taken as the negative electrode and PANI as the positive electrode to study the asymmetric electrochromic supercapacitor [8][9][10][11]. In particular, PANI has shown excellent compatibility with cellulosic materials (e.g., cellulose networks) to prepare novel electrode materials and biomass-based energy storage devices [12].…”