Hierarchically porous heteroatom-doped carbon derived from flue gases for electrochemical energy storage

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This study investigated the synthesis of hierarchically porous heteroatom-doped (B and N) carbon materials from CO2 or flue gas by CO2 conversion using NaBH4 as a reducing agent and their applications as supercapacitors. The resultant carbon materials exhibited a high specific capacitance of 210 F/g at 1 A/g, which is higher than that found in a typical activated carbon. This is because their hierarchical micro-mesoporous structure causes ions to diffuse into the carbon pores with low resistance. In particular, the process synthesizing B/N dual-doped carbon from flue gas reduces the capital/operating cost because the process does not involve an energy-intensive separation process of CO2 from flue gas. Therefore, the direct conversion of flue gas into B/N dual-doped carbon can lead to a sustainable practice of CO2 utilization.
Publisher
ELSEVIER SCI LTD
Issue Date
2016-12
Language
English
Article Type
Article
Citation

JOURNAL OF CO2 UTILIZATION, v.16, pp.420 - 427

ISSN
2212-9820
DOI
10.1016/j.jcou.2016.10.007
URI
http://hdl.handle.net/10203/214787
Appears in Collection
CBE-Journal Papers(저널논문)
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