期刊
PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION
卷 36, 期 7, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ppsc.201900115
关键词
electrode lifetime; nanoarchitecture; porous carbon; supercapacitors
资金
- National Natural Science Foundation of China [21822509, U1810110]
- Tip-top Scientific and Technical Innovative Youth Talents of Guangdong Special Support Program [2015TQ01C205]
- Guangdong province innovation and strong school project [2016KTSCX142]
- Innovative Research Team in University of Guangdong [2015KCXTD027]
- Science and Technology Projects of Jiangmen [(2018) 352]
Carbon nanomaterials with remarkable capacitance are highly notable. Although electronic double-layer capacitors exhibit high power density, their low energy density blocks the practical utility of these carbon materials. Herein, a type of porous-carbon nanoarchitecture with significant capacitive performance is successfully synthesized using a ZnO template and KOH activation. Benefiting from its excellent conductivity, ultrahigh surface area, and porous architecture, the as-prepared porous carbon delivers a high capacitance of 245.4 mF cm(-2) at a current density of 2 mA cm(-2) with impressive rate performance. Moreover, it shows superior cycling durability with more than 99% capacitance retention after 10 000 cycles. A cost-effective, eco-friendly, and promising strategy is proposed for the large-scale preparation of porous-carbon nanomaterial electrodes.
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