Details

Autor(en) / Beteiligte

• Ouyang, Jie
• Zhang, Mengmeng
• Xiong, Wanning
• Zhou, Liangliang
• Zhao, Linlin
• Li, Zejun
• Zhou, Cui
• Chen, Hong
• Luo, Yongfeng
• Fang, Shaoli
• Baughman, Ray H.

Titel

High performance supercapacitors deploying cube-templated tracheid cavities of wood-derived carbon

Ist Teil von

• Journal of colloid and interface science, 2024-10, Vol.671, p.145-153

Ort / Verlag

United States: Elsevier Inc

Erscheinungsjahr

2024

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• [Display omitted] 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−2/53.0F cm−3 at 5.0 mA cm−2) as well as superior areal/volumetric energy densities (0.37 mWh cm−2/7.36 mWh cm−3 at 2.5 mW cm−2). 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.