Three-Dimensional Hierarchical Porous Nanotubes Derived from Metal-Organic Frameworks for Highly Efficient Overall Water Splitting
Yang Wang,
Shenlong Zhao,
Yinlong Zhu,
Ruosang Qiu,
Thomas Gengenbach,
Yue Liu,
Lianhai Zu,
Haiyan Mao,
Huanting Wang,
Jing Tang,
Dongyuan Zhao,
Cordelia Selomulya
Affiliations
Yang Wang
Department of Chemical Engineering, Monash University, Clayton, VIC 3800, Australia
Shenlong Zhao
The University of Sydney, School of Chemical and Biomolecular Engineering, Sydney, NSW 2006, Australia
Yinlong Zhu
Department of Chemical Engineering, Monash University, Clayton, VIC 3800, Australia
Ruosang Qiu
Department of Chemical Engineering, Monash University, Clayton, VIC 3800, Australia
Thomas Gengenbach
Manufacturing, Commonwealth Scientific and Industrial Research Organisation, Clayton, VIC 3168, Australia
Yue Liu
Department of Chemical Engineering, Monash University, Clayton, VIC 3800, Australia
Lianhai Zu
Department of Chemical Engineering, Monash University, Clayton, VIC 3800, Australia
Haiyan Mao
Department of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, CA 94720, USA
Huanting Wang
Department of Chemical Engineering, Monash University, Clayton, VIC 3800, Australia
Jing Tang
Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA; Corresponding author
Dongyuan Zhao
Department of Chemical Engineering, Monash University, Clayton, VIC 3800, Australia; Department of Chemistry, Laboratory of Advanced Materials, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Fudan University, Shanghai 200433, P.R. China; Corresponding author
Cordelia Selomulya
Department of Chemical Engineering, Monash University, Clayton, VIC 3800, Australia; Corresponding author
Summary: Effective design of bifunctional catalysts for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) is important but remains challenging. Herein, we report a three-dimensional (3D) hierarchical structure composed of homogeneously distributed Ni-Fe-P nanoparticles embedded in N-doped carbons on nickel foams (denoted as Ni-Fe-P@NC/NF) as an excellent bifunctional catalyst. This catalyst was fabricated by an anion exchange method and a low-temperature phosphidation of nanotubular Prussian blue analogue (PBA). The Ni-Fe-P@NC/NF displayed exceptional catalytic activity toward both HER and OER and delivered an ultralow cell voltage of 1.47 V to obtain 10 mA cm−2 with extremely excellent durability for 100 h when assembled as a practical electrolyser. The extraordinary performance of Ni-Fe-P@NC/NF is attributed to the abundance of unsaturated active sites, the well-defined hierarchical porous structure, and the synergistic effect between multiple components. Our work will inspire more rational designs of highly active non-noble electrocatalysts for industrial energy applications. : Catalysis; Materials Chemistry; Nanomaterials; Energy Materials Subject Areas: Catalysis, Materials Chemistry, Nanomaterials, Energy Materials
