AI Article Synopsis
- Wood-derived carbon has a unique structure that makes it a strong candidate for self-supporting electrodes in supercapacitors, maximizing space and efficiency.
- Researchers created a cubic channel system within carbonized wood using controlled temperatures, achieving high conductivity and hydrophilicity, resulting in supercapacitors with impressive capacitance and energy density.
- The new method is simple, eco-friendly, and eliminates the need for traditional pore formation techniques, paving the way for easier commercialization of effective wood-based electrodes.
Article Abstract
Wood-derived carbon, with its strong tracheid array structure, is an ideal material for use as a self-supporting electrode in supercapacitors. By leveraging the inherent through pore structure and surface affinity found in wood tracheids, we successfully engineered a highly spatially efficient cube-templated porous carbon framework inside carbonized wood tracheid cavities through precise control over precursor crystallization temperatures. This innovative cubic channel architecture effectively maximizes up to (79 ± 1)% of the cavity volume in wood-derived carbon while demonstrating exceptional hydrophilicity and high conductivity properties, facilitating the development of supercapacitors with enhanced areal/volumetric capacitances (2.65F cm/53.0F cm at 5.0 mA cm) as well as superior areal/volumetric energy densities (0.37 mWh cm/7.36 mWh cm at 2.5 mW cm). The fabrication of these cube-templated channels with high cube filling content is not only simple and precisely controllable, but also environmentally friendly. The proposed method eliminates the conventional acid-base treatment process for pore formation, facilitating the rapid development and practical implementation of thick electrodes with superior performance in supercapacitors. Moreover, it offers a universal research approach for the commercialization of wood-derived thick electrodes.
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| http://dx.doi.org/10.1016/j.jcis.2024.05.172 | DOI Listing |
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