title: Metal-Organic Coordination Networks: Prussian Blue and Its Synergy with Pt Nanoparticles to Enhance Oxygen Reduction Kinetics.
abstract: Oxygen reduction reaction (ORR) is the cornerstone in the electrochemical energy conversion devices such as fuel cells and metal-air batteries. It remains a great challenge to develop the ORR electrocatalysts with fast kinetics and high durability. Herein, we report the synthesis of a novel metal-organic coordination networks material, prussian blue crystalline nanograins mosaicked within amorphous membrane (PB CNG-M-AM). Such unique PB CNG-M-AM is designed to enhance the electrocatalysis of Pt toward the ORR by the electrostatic self-assembly. Thus, obtained Pt-PB/C catalysts form numerous Pt-PB-gas three-phase boundaries and present rather high intrinsic activity, four-electron selectivity and superior stability. Moreover, a completely new synergetic mechanism between PB and Pt is discovered, which delicately alters the ORR route and significantly enhances the ORR kinetics. This work provides not only a new strategy and mechanism for developing highly efficient ORR electrocatalysts, but also an alternative way to utilize metal-organic coordination networks materials.
authors.affiliation: Key Laboratory of Materials for New Energy Conversion and Storage, Ministry of Industry and Information Technology, Harbin Institute of Technology , Harbin 150001, China.|State Key Laboratory of Urban Water Resource and Environment, School of Chemical Engineering and Technology, Harbin Institute of Technology , Harbin 150090, China ).|The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University , Pullman, Washington 99164-6515, United States.
authors.forename: Lei
authors.initials: L
authors.lastname: Du
authors.affiliation: Key Laboratory of Materials for New Energy Conversion and Storage, Ministry of Industry and Information Technology, Harbin Institute of Technology , Harbin 150001, China.
authors.forename: Chunyu
authors.initials: C
authors.lastname: Du
authors.affiliation: Key Laboratory of Materials for New Energy Conversion and Storage, Ministry of Industry and Information Technology, Harbin Institute of Technology , Harbin 150001, China.
authors.forename: Guangyu
authors.initials: G
authors.lastname: Chen
authors.affiliation: Key Laboratory of Materials for New Energy Conversion and Storage, Ministry of Industry and Information Technology, Harbin Institute of Technology , Harbin 150001, China.
authors.forename: Fanpeng
authors.initials: F
authors.lastname: Kong
authors.affiliation: State Key Laboratory of Urban Water Resource and Environment, School of Chemical Engineering and Technology, Harbin Institute of Technology , Harbin 150090, China ).
authors.forename: Geping
authors.initials: G
authors.lastname: Yin
authors.affiliation: The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University , Pullman, Washington 99164-6515, United States.
authors.forename: Yong
authors.initials: Y
authors.lastname: Wang
keywords: fuel cells; metal−organic coordination materials; oxygen reduction; platinum; prussian blue; synergy