Journal
NANO ENERGY
Volume 44, Issue -, Pages 144-154Publisher
ELSEVIER
DOI: 10.1016/j.nanoen.2017.11.072
Keywords
Graphdiyne; Porous carbon; Supercapacitor; Oxygen reduction reaction; 2D material
Categories
Funding
- National Key Research and Development Project of China [2016YFA0200104]
- Chinese Academy of Sciences [QYZDY-SSW-SLH015]
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A novel method is developed for constructing well-defined N-doped graphdiyne (GDY) nanostructures. This method can effectively tune the N-configurations (pyridinic N and triazine-like N cluster), N-content, and porous structures of GDYs, indicating good controllability. The N-configurations and structure of GDYs are well confirmed by the X-ray photoelectron spectrometer measurements, nitrogen absorption measurements and neutron pair distribution function (PDF), respectively. The as-prepared GDYs can be assembled into high-performance two-electrode supercapacitors with specific capacitance high up to 250 F g(-1), delivering an energy density of 8.66 Wh kg(-1) and power density of 19.3 kW kg(-1); the well-defined N-configuration in GDYs offers us an opportunity to understand the controversial nitrogen role in catalyzing the oxygen reduction reaction in sp(2) carbons. Importantly, this method for creating well-defined N-doped GDYs may widely extend the GDY materials for new energy fields.
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