期刊
ACS NANO
卷 9, 期 6, 页码 5868-5875出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.5b00436
关键词
boron-doped; laser induction; graphene; microsupercapacitor; flexible; porous graphene; energy storage
类别
资金
- AFOSR [FA9550-09-1-0581]
- AFOSR MURI [FA9550-12-1-0035]
- University of Missouri-Columbia (MU)
- MU Research Council
Heteroatom-doped graphene materials have been intensely studied as active electrodes in energy storage devices. Here, we demonstrate that boron-doped porous graphene can be prepared in ambient air using a facile laser induction process from boric acid containing polyimide sheets. At the same time, active electrodes can be patterned for flexible microsupercapacitors. As a result of boron doping, the highest areal capacitance of as-prepared devices reaches 16.5 mF/cm(2), 3 times higher than nondoped devices, with concomitant energy density increases of 5-10 times at various power densities. The superb cyclability and mechanical flexibility of the device are well-maintained, showing great potential for future microelectronics made from this boron-doped laser-induced graphene material.
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