Journal
JOURNAL OF CO2 UTILIZATION
Volume 16, Issue -, Pages 420-427Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jcou.2016.10.007
Keywords
CO2 conversion; Flue gas conversion; Supercapacitor; KOH treatment; Heteroatom doping
Funding
- Mid-career Researcher Program
- Korea CCS R&D program - Ministry of Science, ICT and Future Planning [NRF-2014R1A2A2A01007076, NRF-2014M1A8A1049297]
- National Research Foundation of Korea [2014M1A8A1049297] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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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 micromesoporous 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. (C) 2016 Elsevier Ltd. All rights reserved.
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