TY  - JOUR
AB  - A facile synthesis method to produce nitrogen-doped graphene containing a high atomic percentage of pyridinic N and graphitic N via the thermal annealing of graphene oxide and uric acid is reported. The method yielded N-doped graphene nanosheets that had high surface areas and that contained 9.22 at% nitrogen, which was present in four bonding configurations with a high ratio of pyridinic N and graphitic N. The synthesized N-doped graphene showed excellent capacitance properties, which led to the fabrication of a stacked electrode supercapacitor cell of 2-electrode configuration with a specific capacitance of 230 F g?1 at a current density of 1 A g?1 and with a remarkably high energy density of 62.6 W h kg?1 in aqueous electrolyte. Additionally, this material showed superior properties as an electrocatalyst for both the oxygen-reduction reaction (ORR) and oxygen evolution reaction (OER), producing high current density primarily via the four-electron pathway for ORR at a current density of ?4.3 mA cm?2 and OER activity of a generating current density of 10 mA cm?2 at 1.74 V vs. RHE in alkaline media. Hence, this dual-natured N-doped graphene could provide a platform for developing nanostructured graphene-based advanced energy storage and conversion devices.
AU  - Faisal, SN
AU  - Haque, E
AU  - Noorbehesht, N
AU  - Zhang, W
AU  - Harris, AT
AU  - Church, T
AU  - Minett, AI
DA  - 2017/01/01
DO  - 10.1039/c7ra01355h
EP  - 17958
JO  - RSC Advances: an international journal to further the chemical sciences
PB  - Royal Society of Chemistry
PY  - 2017/01/01
SP  - 17950
TI  - Pyridinic and graphitic nitrogen-rich graphene for high-performance supercapacitors and metal-free bifunctional electrocatalysts for ORR and OER
VL  - 7
Y1  - 2017/01/01
Y2  - 2026/07/11
ER  -