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Yu Q.,CAS Fujian Institute of Research on the Structure of Matter | Yu Q.,Fujian Key Laboratory of Nanomaterials | Yu Q.,University of Chinese Academy of Sciences | Xu J.,CAS Fujian Institute of Research on the Structure of Matter | And 5 more authors.
RSC Advances | Year: 2015

The hybrid materials of cobalt doped graphitic carbon nitride (g-C3N4) attached on single-walled carbon nanotubes (SWCNTs) were synthesized by a simple pyrolysis process. Electrochemical measurements revealed that the composites exhibited excellent electrocatalytic activity for oxygen reduction reaction (ORR), with a more positive onset potential (-0.03 V), half-wave potential (-0.15 V), high efficiency four-electron process (n = 3.97) and much higher stability than that of commercial Pt/C catalysts in alkaline media. The ORR activity mainly originates from the strong coupling of Co-g-C3N4 derived active sites on the SWCNTs. © The Royal Society of Chemistry 2015. Source


Yu Q.,CAS Fujian Institute of Research on the Structure of Matter | Yu Q.,Fujian Key Laboratory of Nanomaterials | Yu Q.,University of Chinese Academy of Sciences | Xu J.,CAS Fujian Institute of Research on the Structure of Matter | And 8 more authors.
Journal of Materials Chemistry A | Year: 2015

Porous cobalt-nitrogen-doped hollow graphene spheres were prepared by a template synthesis method. As a catalyst for the oxygen reduction reaction, they exhibit an excellent electrocatalytic activity, superior methanol tolerance and strong durability, not only in alkaline solution, but also in acidic solution. The unprecedented electrocatalytic performance of the catalyst is attributed to the well-defined morphology, high specific surface area (321 m2 g-1), large pore volume (1.8 cm3 g-1) and homogeneous distribution of cobalt-nitrogen active sites. © The Royal Society of Chemistry 2015. Source


Wu W.,Chinese Academy of Sciences | Wu W.,Fujian Key Laboratory of Nanomaterials | Wan C.,Chinese Academy of Sciences | Wan C.,Fujian Key Laboratory of Nanomaterials | And 4 more authors.
RSC Advances | Year: 2015

3D hierarchical porous graphene laminates (GLs) with high surface area and porosity were synthesized through self-assembly of functionalized graphene oxide embedded with SiO2in situ. Thus, as a cathode material for Li-S batteries, the obtained GLs loaded with 73 wt% sulfur, deliver a high discharge capacity of 800 mA h g-1 after 100 cycles at a current density of 0.2C. © The Royal Society of Chemistry 2015. Source

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