Ultrahigh Surface Area N‐Doped Hierarchically Porous Carbon for Enhanced CO 2 Capture and Electrochemical Energy Storage

作者：Shuai Wang, Jieqiong Qin, Yujuan Zhao, Linlin Duan, Jinxiu Wang, Wen‐Jun Gao, Ruicong Wang, Changyao Wang, Manas Pal, Zhong‐Shuai Wu, Wei Li, Dongyuan Zhao · 发表于：ChemSusChem · 年份：2019 · DOI：10.1002/cssc.201901137 · 被引用次数：52 · 研究领域：Supercapacitor Materials and Fabrication、Advanced battery technologies research、Covalent Organic Framework Applications

Abstract Facile synthesis of ultrahigh surface area porous carbons with well‐defined functionalities such as N‐doping remains a formidable challenge as extensive pore creation results in significant damage to the active sites. Herein, an ultrahigh surface area, N‐doped hierarchically porous carbon was prepared through a multicomponent co‐assembly approach. The resultant N‐doped hierarchically porous carbon (N‐HPC) possessed an ultrahigh surface area (≈1960 m 2 g −1 ), a uniform interpenetrating micropore (≈1.3 nm) and large mesopore (≈7.6 nm) size, and high N‐doping in the carbon frameworks (≈5 wt %). The N‐HPC exhibited a high specific capacitance (358 F g −1 at 0.5 A g −1 ) as a supercapacitor electrode in aqueous alkaline electrolyte with a stable cycling performance after10 000 charge/discharge cycles. Moreover, as a CO 2 absorbent, N‐HPC displayed an adsorption capacity of 29.0 mmol g −1 at 0 °C under a high pressure of 30 bar.