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

Research output: Contribution to journalArticleResearchpeer-review

3 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number100761
Number of pages17
JournaliScience
Volume23
Issue number1
DOIs
Publication statusPublished - 24 Jan 2020

Keywords

  • Catalysis
  • Energy Materials
  • Materials Chemistry
  • Nanomaterials

Cite this