通过电荷诱导自组装和纳米晶体辅助催化石墨化构建用于超级电容器的3D纳米结构分级多孔石墨碳
Construction of 3D nanostructure hierarchical porous graphitic carbons by charge-induced self-assembly and nanocrystal-assisted catalytic graphitization for supercapacitors.
作者信息
Ma Fangwei, Ma Di, Wu Guang, Geng Weidan, Shao Jinqiu, Song Shijiao, Wan Jiafeng, Qiu Jieshan
机构信息
Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of China, Key Laboratory of Chemical Engineering Processes & Technology for High-efficiency Conversion (College of Heilongjiang Province), School of Chemistry and Material Science, Heilongjiang University, Harbin, 150080, China.
Liaoning Key Lab for Energy Materials and Chemical Engineering, State Key Lab of Fine Chemicals, Dalian University of Technology, Dalian, 116024, China.
出版信息
Chem Commun (Camb). 2016 May 10;52(40):6673-6. doi: 10.1039/c6cc02147f.
A smart and sustainable strategy based on charge-induced self-assembly and nanocrystal-assisted catalytic graphitization is explored for the efficient construction of 3D nanostructure hierarchical porous graphitic carbons from the pectin biopolymer. The electrostatic interaction between the negatively charged pectin chains and magnesium ions plays a crucial role in the formation of 3D architectures. The 3D HPGCs possess a three-dimensional carbon framework with a hierarchical porous structure, flake-like graphitic carbon walls and high surface area (1320 m(2) g(-1)). The 3D HPGCs show an outstanding specific capacitance of 274 F g(-1) and excellent rate capability with a high capacitance retention of 85% at a high current density of 50 A g(-1) for supercapacitor electrodes. This strategy provided a novel approach to effectively construct 3D porous carbon nanostructures from biopolymers.
基于电荷诱导自组装和纳米晶体辅助催化石墨化的智能且可持续的策略被用于从果胶生物聚合物高效构建三维纳米结构分级多孔石墨碳。带负电荷的果胶链与镁离子之间的静电相互作用在三维结构的形成中起着关键作用。三维分级多孔石墨碳具有三维碳骨架，其具有分级多孔结构、片状石墨碳壁和高比表面积（1320 m² g⁻¹）。对于超级电容器电极，三维分级多孔石墨碳表现出274 F g⁻¹的出色比电容和优异的倍率性能，在50 A g⁻¹ 的高电流密度下具有85%的高电容保持率。该策略为从生物聚合物有效构建三维多孔碳纳米结构提供了一种新方法。
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