A Defect‐rich N, P Co‐doped Carbon Foam as Efficient Electrocatalyst toward Oxygen Reduction Reaction. Issue 16 (24th June 2020)

• Record Type: Journal Article
• Authors: Yang, Maomao; Shu, Xinxin; Zhang, Jintao
• Is Part Of: ChemCatChem. Volume 12:Issue 16(2020)
• Page Start: 4105
• Page End: 4111
• Publication Date: 2020-06-24
• Subjects: Oxygen reduction -- Zn-air battery -- Phytic acid -- Heteroatom doping -- Electrocatalysis; Catalysis -- Periodicals; 541.39505
• DOI: 10.1002/cctc.202000363
• Languages: English
• ISSNs: 1867-3880

Abstract

Abstract: Explore cost‐effective and efficient carbon‐based electrocatalysts toward oxygen reduction reaction is highly desired to replace high‐cost platinum group metal (PGM) catalysts. Herein we synthesized a N, P co‐doped carbon foam by direct blowing of glucose in the presence of phytic acid (blowing catalyst) and urea (self‐sacrificing template). This template‐free one‐step approach achieved high surface heteroatom content of N (5 at.%) and P (2.33 at.%), large surface area (1026 m 2 g −1 ) and high ID /IG ratio. It was found that the edges‐rich activated carbon scaffold as well as the active N‐sites work synthetically to guarantee its efficient ORR performance with the half‐wave potential of 0.84 VRHE . Besides, the well‐balanced porous structure facilitates its practical application as an air cathode in zinc‐air cell, reaching power density of 145 mW cm −2 at the current density of 169 mA cm −2 . Abstract : Electrocatalysis : The thermal blowing preparation of N, P co‐doped porous carbon with abundant edges and heteroatoms enables enhanced oxygen reduction activity for high‐performance zinc‐air battery.