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Three-Dimensional Hierarchical Porous Nanotubes Derived from Metal-Organic Frameworks for Highly Efficient Overall Water Splitting
- Source :
- iScience, Vol 23, Iss 1, Pp-(2020), iScience
- Publication Year :
- 2020
- Publisher :
- Elsevier, 2020.
-
Abstract
- 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.<br />Graphical Abstract<br />Highlights • Nanotubular Prussian blue analogue as a precursor is synthesized by anion exchange • The catalyst exhibits excellent catalytic activity for hydrogen and oxygen production • The catalyst-based electrolyser has a low cell voltage of 1.47 V to obtain 10 mA cm−2 • The electrolyser shows an extremely excellent durability for 100 h at 50 mA cm−2<br />Catalysis; Materials Chemistry; Nanomaterials; Energy Materials
- Subjects :
- 0301 basic medicine
Materials science
Nanoparticle
02 engineering and technology
7. Clean energy
Article
Catalysis
Energy Materials
03 medical and health sciences
chemistry.chemical_compound
Materials Chemistry
Bifunctional
lcsh:Science
Nanomaterials
Prussian blue
Multidisciplinary
Oxygen evolution
021001 nanoscience & nanotechnology
Bifunctional catalyst
030104 developmental biology
chemistry
Chemical engineering
Water splitting
Metal-organic framework
lcsh:Q
0210 nano-technology
Subjects
Details
- Language :
- English
- ISSN :
- 25890042
- Volume :
- 23
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- iScience
- Accession number :
- edsair.doi.dedup.....9b4ff4f1b395c1d0e5a957fc806cde0c