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Ultrahigh Surface Area N‐Doped Hierarchically Porous Carbon for Enhanced CO 2 Capture and Electrochemical Energy Storage
Author(s) -
Wang Shuai,
Qin Jieqiong,
Zhao Yujuan,
Duan Linlin,
Wang Jinxiu,
Gao Wenjun,
Wang Ruicong,
Wang Changyao,
Pal Manas,
Wu ZhongShuai,
Li Wei,
Zhao Dongyuan
Publication year - 2019
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201901137
Subject(s) - supercapacitor , materials science , specific surface area , carbon fibers , chemical engineering , mesoporous material , adsorption , electrolyte , electrochemistry , microporous material , aqueous solution , doping , porosity , capacitance , nanotechnology , electrode , chemistry , organic chemistry , catalysis , composite number , composite material , optoelectronics , engineering
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.