Conjugated Microporous Polycarbazole Networks as Precursors for Nitrogen-Enriched Microporous Carbons for CO2 Storage and Electrochemical Capacitors
Conjugated Microporous Polycarbazole Networks as Precursors for Nitrogen-Enriched Microporous Carbons for CO2 Storage and Electrochemical Capacitors
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共轭微孔聚咔唑网络作为用于二氧化碳储存和电化学电容器的富氮微孔碳的前体
DOI：
10.1021/acs.chemmater.7b00857
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发表时间：
2017-06-13
影响因子：
8.6
通讯作者：
Faul, Charl F. J.
中科院分区：
文献类型：
--
作者：
Wang, Haige;Cheng, Zhonghua;Faul, Charl F. J.
新型微孔材料的设计和合成在CO2储存和封存（CSS）和电化学能量储存（EES）方面都受到了极大的关注。我们报道了共轭微孔聚咔唑网络的分子设计和合成，作为富氮多孔碳的新前驱体。所制备的多孔炭表现出高的氮含量（6.1wt%）、超微尺寸（0.7-1 nm）和大的表面积（1280 m2 g-1）。因此，这些新型富氮碳显示出高效且可逆的CO2捕获（在1巴下可储存20.4重量%，在0.15巴和273 K下可储存11.1重量%，同时在五次循环后保持100%的CO2吸收能力）。此外，它们可以用作电极，并使高性能EES器件具有快速充电/放电速率（8 s），高电化学容量（558 F g-1）和良好的循环能力（1000次循环后保留95%的容量）。
The design and synthesis of novel microporous materials have received tremendous attention in both CO2 storage and sequestration (CSS) and electrochemical energy storage (EES). We report molecular design and synthesis of conjugated microporous polycarbazole networks as new precursors for nitrogen-enriched porous carbons. As-prepared porous carbons exhibit a high nitrogen content (6.1 wt %), ultramicropore size (0.7–1 nm), and large surface area (1280 m2 g–1). As a result, these novel nitrogen-enriched carbons show highly efficient and reversible CO2 capture (can store 20.4 wt % at 1 bar and 11.1 wt % at 0.15 bar and at 273 K, while maintaining 100% CO2 uptake capacity after five cycles). Moreover, they can be applied as electrodes and enable high-performance EES devices with a fast charge/discharge rate (8 s), high electrochemical capacity (558 F g–1), and good cycle ability (retain 95% capacity after 1000 cycles).