title: Nanoporous graphitic-C3N4@carbon metal-free electrocatalysts for highly efficient oxygen reduction.
abstract: Based on theoretical prediction, a g-C(3)N(4)@carbon metal-free oxygen reduction reaction (ORR) electrocatalyst was designed and synthesized by uniform incorporation of g-C(3)N(4) into a mesoporous carbon to enhance the electron transfer efficiency of g-C(3)N(4). The resulting g-C(3)N(4)@carbon composite exhibited competitive catalytic activity (11.3 mA cm(-2) kinetic-limiting current density at -0.6 V) and superior methanol tolerance compared to a commercial Pt/C catalyst. Furthermore, it demonstrated significantly higher catalytic efficiency (nearly 100% of four-electron ORR process selectivity) than a Pt/C catalyst. The proposed synthesis route is facile and low-cost, providing a feasible method for the development of highly efficient electrocatalysts.
authors.affiliation: ARC Centre of Excellence for Functional Nanomaterials, Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, QLD 4072 Brisbane, Australia.
authors.forename: Yao
authors.initials: Y
authors.lastname: Zheng
authors.forename: Yan
authors.initials: Y
authors.lastname: Jiao
authors.forename: Jun
authors.initials: J
authors.lastname: Chen
authors.forename: Jian
authors.initials: J
authors.lastname: Liu
authors.forename: Ji
authors.initials: J
authors.lastname: Liang
authors.forename: Aijun
authors.initials: A
authors.lastname: Du
authors.forename: Weimin
authors.initials: W
authors.lastname: Zhang
authors.forename: Zhonghua
authors.initials: Z
authors.lastname: Zhu
authors.forename: Sean C
authors.initials: SC
authors.lastname: Smith
authors.forename: Mietek
authors.initials: M
authors.lastname: Jaroniec
authors.forename: Gao Qing Max
authors.initials: GQ
authors.lastname: Lu
authors.forename: Shi Zhang
authors.initials: SZ
authors.lastname: Qiao