No abstract

In this paper, boron doped activated wood derived carbon (BAWDC) was successfully employed to support and disperse polyaniline (PANI) particles for the application as supercapacitor electrode materials. Compared to pure PANI and BAWDC, the as-prepared polyaniline coated boron doped wood derived porous carbon composite (PANI–BAWDC) displays significantly enhanced specific capacitance, due to the synergetic effect between PANI and BAWDC. Moreover, the obtainable highest specific capacitance (421 F g–1 at 10 mV s–1, 372 F g–1 at 2 A g–1) and energy density (45.2 Wh kg–1 at 876 W kg–1) of this PANI–BAWDC composite are comparable to those of some similar PANI coated carbon composites, suggesting a good potential of PANI–BAWDC composite for future supercapacitor applications.

Self-healing superhydrophobic surfaces have been fabricated by casting and drying water-soluble amphiphilic polymer suspensions at room temperature through thermal reconstruction. When compared with previous methods, this approach exploits modified natural hierarchical microstructures from wood instead of artificially constructing them for superhydrophobic morphology, which involves neither organic solvent nor inorganic particles nor complex procedures. The obtained superhydrophobic surface has acceptable resistance to abrasion. The surface can recover superhydrophobicity spontaneously at room temperature upon damage, which can be accelerated at a higher temperature. After depleting healing agents, the polymer suspension can be sprayed or cast onto wood surfaces to replenish healing agents and to restore self-healing ability. The superhydrophobic surface greatly increases the mold inhibition and water resistance of wood, which would prolong the service life of wood based materials.