Nitrogen-doped porous carbon materials generated via conjugated microporous polymer precursors for CO2 capture and energy storage
Nitrogen-doped porous carbon materials generated via conjugated microporous polymer precursors for CO2 capture and energy storage
复制标题
通过共轭微孔聚合物前体生成的氮掺杂多孔碳材料用于二氧化碳捕获和能量储存
DOI：
10.1039/c7ra05551j
复制
发表时间：
2017-01-01
期刊：
影响因子：
3.9
通讯作者：
Shen, Jiajia
中科院分区：
文献类型：
--
作者：
Xu, Yongjie;Wu, Shaoping;Shen, Jiajia
杂原子掺杂和良好调控的孔隙率被视为多孔碳材料（PCMs）在各种应用中的两个重要因素。然而，在保持其他因素不变的情况下调节单一变量仍然很困难，这限制了对PCMs的合理和系统研究。在这项工作中，通过直接热解具有相同骨架结构的共轭微孔聚合物前体（分别为TCMP - 1和CMP - 1），制备了原位氮掺杂多孔碳材料（NPCM - 1）及其未掺杂的类似物PCM - 1。研究发现，由于优化的孔隙结构，PCMs与其CMP前体相比，对CO₂的吸附能力显著增强。同时，尽管这两种PCMs具有相当的孔隙率特性，但NPCM - 1在超级电容储能方面的性能比PCM - 1好得多，这可能是由于氮掺杂的引入大大提高了导电性以及与电解质的润湿性。因此，这项工作为用于CO₂捕获和储能应用的高性能PCMs的设计和制备提供了有价值的见解。
Heteroatom doping and well-tuned porosity are regarded as two important factors of porous carbon materials (PCMs) for various applications. However, it is still difficult to tune a single variable while retaining the other factors unchanged, which restricts rational and systematic research on PCMs. In this work, in situ nitrogen-doped porous carbon material (NPCM-1) and its non-doped analogue PCM-1 were prepared by direct pyrolysis of conjugated microporous polymer precursors (TCMP-1 and CMP-1 respectively) with the same skeleton structure. It was found that the CO2 adsorption capability of the PCMs was significantly enhanced compared with their CMP precursors thanks to the optimized pore configuration. Meanwhile, NPCM-1 exhibits much better performance in supercapacitive energy storage than PCM-1 even though these two PCMs possess comparable porosity properties, which is probably due to the much improved electrical conductivity and wettability with the electrolytes because of the introduction of nitrogen doping. Thus, this work provides a valuable insight into the design and preparation of high performance PCMs for CO2 capture and energy storage applications.