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由聚咔唑邻苯二甲腈制备均匀多孔碳用于耐用的CO吸附剂和超级电容器电极

Development of Uniform Porous Carbons From Polycarbazole Phthalonitriles as Durable CO Adsorbent and Supercapacitor Electrodes.

作者信息

Alenezi Ghadeer Thani, Rajendran Narendran, Abdel Nazeer Ahmed, Makhseed Saad

机构信息

Department of Chemistry, Faculty of Science, Kuwait University, Kuwait City, Kuwait.

Petroleum Refining and Petrochemicals Research Center, College of Engineering and Petroleum, Kuwait University, Kuwait City, Kuwait.

出版信息

Front Chem. 2022 Apr 25;10:879815. doi: 10.3389/fchem.2022.879815. eCollection 2022.

DOI:10.3389/fchem.2022.879815
PMID:35548674
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9081769/
Abstract

Advances in new porous materials have recognized great consideration in CO capture and electrochemical energy storage (EES) applications. In this study, we reported a synthesis of two nitrogen-enriched KOH-activated porous carbons prepared from polycarbazole phthalonitrile networks through direct pyrolysis protocol. The highest specific surface area of the carbon material prepared by pyrolysis of p-4CzPN polymer reaches 1,279 m g. Due to the highly rigid and reticular structure of the precursor, the obtained c-4CzPN-KOH carbon material exhibits high surface area, uniform porosity, and shows excellent CO capture performance of 19.5 wt% at 0°C. Moreover, the attained porous carbon c-4CzPN-KOH showed high energy storage capacities of up to 451 F g in aqueous electrolytes containing 6.0 M KOH at a current density of 1 A g. The prepared carbon material also exhibits excellent charge/discharge cycle stability and retains 95.9% capacity after 2000 cycles, indicating promising electrode materials for supercapacitors.

摘要

新型多孔材料的进展在二氧化碳捕集和电化学储能（EES）应用中受到了广泛关注。在本研究中，我们报道了通过直接热解协议，由聚咔唑邻苯二甲腈网络制备两种富氮KOH活化多孔碳的合成方法。通过对p-4CzPN聚合物进行热解制备的碳材料的最高比表面积达到1279 m²/g。由于前驱体具有高度刚性和网状结构，所获得的c-4CzPN-KOH碳材料具有高比表面积、均匀的孔隙率，并且在0°C时表现出19.5 wt%的优异二氧化碳捕集性能。此外，所获得的多孔碳c-4CzPN-KOH在含有6.0 M KOH的水性电解质中，在1 A/g的电流密度下，表现出高达451 F/g的高储能容量。所制备的碳材料还表现出优异的充放电循环稳定性，在2000次循环后保留95.9%的容量，表明其是超级电容器有前景的电极材料。

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