Abstract
AbstractDeveloping eco‐friendly, high‐efficiency and cost‐effective catalysts for oxygen reduction reaction are significantly crucial for the application of direct‐methanol fuel cells. The metal‐free sulfur/nitrogen in‐situ co‐doped carbon nanosheets are prepared through polymerization process and carbonization process using aniline as a nitrogen source, 4‐aminobenzenesulfonamide as a sulfur source and NaCl as a template and protective layer. The obtained catalysts show the obvious two dimensional nanosheet structure with successful doping of S and N. Benefiting from high contents of S atoms and N atom, high special surface area and graphitic degree, well‐ordered micropores and synergetic interaction between thiophenic‐S, pyridinic N and graphitic N, the optimal catalyst S3/N‐CNS800 shows excellent oxygen reduction performance with 13.2 mV more positive half‐wave potential than that of 20% Pt/C, superior long‐term durability and tolerance to methanol crossover.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
