Hollow nitrogen-doped carbon spheres as efficient and durable electrocatalysts for oxygen reduction

Abstract

Hollow nitrogen-doped carbon spheres (HNCSs) were prepared by a facile method as non-precious catalysts for the oxygen reduction reaction (ORR). The HNCS catalysts exhibited ORR activity comparable with a commercial Pt/C catalyst and superior stability in alkaline electrolyte medium.

Investigation of hollow nitrogen-doped carbon spheres as non-precious Fe–N4 based oxygen reduction catalysts

“…13 Briefly, HNCSs synthesis was conducted using commercial Swagelok union cells. 13 Briefly, HNCSs synthesis was conducted using commercial Swagelok union cells.…”

A chromium nitride/carbon nitride containing graphitic carbon nanocapsule hybrid as a Pt-free electrocatalyst for oxygen reduction

“…18 As shown in Fig. 1d, the N1s XPS spectrum could be deconvoluted into three types of N species, corresponding with N-Cr at 396.4 eV, pyridinic-N at 398.3 eV and graphitic-N at 400.4 eV, respectively, 19,20,21 all of which are considered to be favorable for ORR. The existence of graphitic-N demonstrates that N is also doped into GC and the carbon nitrides could be formed.…”

Nitrogen and Sulfur Co-doped Graphene Supported Cobalt Sulfide Nanoparticles as an Efficient Air Cathode for Zinc-air Battery

“…The effect of temperature on the formation of different phases of cobalt sulfides in an open inert atmosphere has been reported [12]. Preparation of nanomaterials by solid-state thermolysis has been reported to be a good choice for solution free synthesis of metal-free and non-precious electro-catalysts [20][21][22].…”