<br>采用木材衍生碳的立方体模板管胞腔的高性能超级电容器,Journal of Colloid and Interface Science

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采用木材衍生碳的立方体模板管胞腔的高性能超级电容器
Journal of Colloid and Interface Science ( IF 9.4 ) Pub Date : 2024-05-23 , DOI: 10.1016/j.jcis.2024.05.172
Jie Ouyang ₁ , Mengmeng Zhang ₂ , Wanning Xiong ₁ , Liangliang Zhou ₁ , Linlin Zhao ₁ , Zejun Li ₁ , Cui Zhou ₁ , Hong Chen ₁ , Yongfeng Luo ₁ , Shaoli Fang ₂ , Ray H Baughman ₂

Affiliation

木材衍生的碳具有坚固的管胞阵列结构，是用作超级电容器自支撑电极的理想材料。通过利用木材管胞中固有的通孔结构和表面亲和力，我们通过精确控制前体结晶温度，成功地在碳化木材管胞腔内设计了高度空间效率的立方体模板多孔碳框架。这种创新的立方通道结构有效地最大化了木材衍生碳中高达 (79 ± 1)% 的空腔体积，同时表现出卓越的亲水性和高电导率特性，促进了具有增强面积/体积电容（2.65F cm/53.0）的超级电容器的开发5.0 mA cm 时的 F cm）以及出色的面积/体积能量密度（2.5 mW cm 时为 0.37 mWh cm/7.36 mWh cm）。这些具有高立方体填充含量的立方体模板通道的制造不仅简单且可精确控制，而且对环境友好。该方法消除了传统的成孔酸碱处理工艺，有利于超级电容器中性能优越的厚电极的快速开发和实际应用。此外，它为木材厚电极的商业化提供了一种通用的研究方法。

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

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.

更新日期：2024-05-23

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