Aerographite: Ultra Lightweight, Flexible Nanowall, Carbon Microtube Material with Outstanding Mechanical Performance (free PDF)
An ultra lightweight carbon microtube material called Aerographite is synthesized by a novel single-step chemical vapor deposition synthesis based on ZnO networks, which is presently the lightest known material with a density smaller than μg/cm3. Despite its low density, the hierarchical design leads to remarkable mechanical, electrical, and optical properties. The first experiments with Aerographite electrodes confirm its applicability.
The atomic structure can be tuned from graphitic to glass-like pyrolytic carbon, with the advantage of remarkable mechanical properties. This most lightweight material reaches the highest merit indices for specific moduli observed until now. Further optimization of parameters like, e.g., pore size and volume density of sintering bridges keeps the opportunity for future improvements of the mechanical performance of Aerographite. Further properties like conductivity, flexibility and compressibility without losing structural integrity, high optical adsorption and X-ray opacity, a high temperature stability and chemical resistance, the bearing of tensile and compressive loads, and the super hydrophobicity making it a remarkable multifunctional material. Next to others, potential applications might be electrode materials for the increasing demand of batteries and high surface area supercapacitor materials. Proper designed carbon materials from the family of Aerographites could avoid typical problems of electrode materials like low mechanical cycling stability, degenerating electrical contacts, or non-optimized electrolyte to surface ratio which might be tuned in by simple compression due to the negligible Poisson’s ratio of these sponge-like structures.
Direct conversion electrodes with position-dependent resisitivity and alpha tolerance?
Stable capacitors for Mach-Woodward Effect?