Journal
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
Volume 58, Issue 48, Pages 22124-22132Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.iecr.9b05133
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Funding
- Key Projects of Higher Education of Anhui [KJ2017A435]
- Scientific Research Foundation for Doctoral Program [2019jb02]
- Provincial Natural Science Foundation of Anhui [1908085ME120]
- Outstanding Youth Talents in Anhui Provincial Education Department [2017GXBJZD47]
- Key Discipline of Material Science and Engineering of Suzhou University [2017XJZDXK3]
- Innovative Research Team of Anhui Provincial Education Department [2016SCXPTTD]
- Primary Research and Development Program of Anhui Province [201904a05020087]
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In this work, we demonstrate a novel strategy for producing a porous carbon hollow rod (PCHR) via simple carbonization of magnesium gluconate. The mass ratios of PCHR/KOH are a key factor in directly determining the PCHR shape, specific surface areas, and pore structures. The obtained PCHR-4 exhibits an ultra-high specific surface area (1980 m(2) g(-1)), high density micropores (0.7-2 nm), a hollow rod shape structure, a hierarchical pore structure, and rich O-doping (8.8 wt %). PCHR-4-based supercapacitors in ionic liquid exhibit an ultrahigh specific capacitance of up to 225 F g(-1) More importantly, the PCHR-4 symmetrical supercapacitor can deliver a maximum energy density of 70.4 W h kg(-1), which is superior to those recently reported carbon-based symmetric supercapacitors in ionic liquid.
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