نتایج جستجو برای: nitrogen doped graphene
تعداد نتایج: 211138 فیلتر نتایج به سال:
The development of fuel cells as clean-energy technologies is largely limited by the prohibitive cost of the noble-metal catalysts needed for catalyzing the oxygen reduction reaction (ORR) in fuel cells. A fundamental understanding of catalyst design principle that links material structures to the catalytic activity can accelerate the search for highly active and abundant nonmetal catalysts to ...
Thermal nitridation of reduced graphene oxide sheets yields highly conductive (∼1000-3000 S m(-1)) N-doped graphene sheets, as a result of the restoration of the graphene network by the formation of C-N bonded groups and N-doping. Even without carbon additives, supercapacitors made of the N-doped graphene electrodes can deliver remarkable energy and power when operated at higher voltages, in th...
By combining ab initio simulations with state-of-the-art electron microscopy and electron energy loss spectroscopy, we study the mechanism of electron beam damage in nitrogen-doped graphene and carbon nanotubes. Our results show that the incorporation of nitrogen atoms results in noticeable knock-on damage in these structures already at an acceleration voltage of 80 kV, at which essentially no ...
Controlling the spatial distribution of dopants in graphene is gateway to realization graphene-based electronic components. Here, it shown that a submonolayer self-assembled physisorbed molecules can be used as resist during post-synthesis nitrogen doping process realize nanopatterning graphene. The resulting formation domains with different concentrations allows obtaining n–n’ and p–n junction...
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