title: Facile synthesis of Mn3O4-rGO hybrid materials for the high-performance electrocatalytic reduction of oxygen.
abstract: In this study, a highly active oxygen reduction reaction (ORR) electrocatalyst (MG-15) of Mn3O4nanoparticles (NPs) supported by reduced graphene oxide (rGO) has been fabricated through one-step microwave-assisted synthetic route. Upon microwave-assisted synthesis, the formation of Mn3O4NPs and the reduction of GO occurs simultaneously. Transmission electron microscope (TEM) profile reveals that Mn3O4NPs are uniformly distributed evenly on the winkled rGO sheets. The MG-15 hybrid materials show enhanced electrocatalytic activity compared to rGO, Mn3O4NPs and the mixture of rGO and Mn3O4NPs, which indicates that the synergistic effect of Mn3O4and rGO enhances the overall performance. Additional, the oxygen reduction peak of the MG-15 catalyst in a 0.1M KOH solution is tested at -0.15V, which is more positive than Pt/C (-0.154V). The onset potential of the MG-15 is close to Pt/C. Most importantly, the mechanism analysis shows that it favors the 4e-pathway for ORR. Furthermore, the MG-15 also exhibit excellent durability and methanol.
authors.affiliation: Key Laboratory of Clean Energy Material and Technology, Ministry of Education, Key Laboratory of Advanced Functional Materials, Institute of Applied Chemistry, Xinjiang University, Urumqi 830046, Xinjiang, PR China. Electronic address: huichmails@163.com.
authors.forename: Hui
authors.initials: H
authors.lastname: Chai
authors.affiliation: Key Laboratory of Clean Energy Material and Technology, Ministry of Education, Key Laboratory of Advanced Functional Materials, Institute of Applied Chemistry, Xinjiang University, Urumqi 830046, Xinjiang, PR China.
authors.forename: Jiayu
authors.initials: J
authors.lastname: Xu
authors.affiliation: Department of Ophthalmology, The Sixth Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, PR China.
authors.forename: JIngli
authors.initials: J
authors.lastname: Han
authors.affiliation: Key Laboratory of Clean Energy Material and Technology, Ministry of Education, Key Laboratory of Advanced Functional Materials, Institute of Applied Chemistry, Xinjiang University, Urumqi 830046, Xinjiang, PR China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Su
authors.affiliation: Key Laboratory of Clean Energy Material and Technology, Ministry of Education, Key Laboratory of Advanced Functional Materials, Institute of Applied Chemistry, Xinjiang University, Urumqi 830046, Xinjiang, PR China.
authors.forename: Zhipeng
authors.initials: Z
authors.lastname: Sun
authors.affiliation: Key Laboratory of Clean Energy Material and Technology, Ministry of Education, Key Laboratory of Advanced Functional Materials, Institute of Applied Chemistry, Xinjiang University, Urumqi 830046, Xinjiang, PR China.
authors.forename: Dianzeng
authors.initials: D
authors.lastname: Jia
authors.affiliation: College of Chemistry & Chemical Engineering, Xinjiang University, Urumqi, Xinjiang, PR China.
authors.forename: Wanyong
authors.initials: W
authors.lastname: Zhou
keywords: Hybrid materials; Oxygen reduction reaction; rGO