Nickel Nanoparticles Encapsulated in Few-Layer Nitrogen-Doped Graphene Derived from Metal-Organic Frameworks as Efficient Bifunctional Electrocatalysts for Overall Water Splitting

You Xu; Wenguang Tu; Bowei Zhang; Shengming Yin; Yizhong Huang; Markus Kraft; Rong Xu

doi:10.1002/adma.201605957

Nickel Nanoparticles Encapsulated in Few-Layer Nitrogen-Doped Graphene Derived from Metal-Organic Frameworks as Efficient Bifunctional Electrocatalysts for Overall Water Splitting

Adv Mater. 2017 Mar;29(11). doi: 10.1002/adma.201605957. Epub 2017 Jan 19.

Authors

You Xu^{1

2}, Wenguang Tu¹, Bowei Zhang³, Shengming Yin¹, Yizhong Huang³, Markus Kraft^{4

5}, Rong Xu^{1

2

4}

Affiliations

¹ School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore.
² SinBeRISE CREATE, National Research Foundation, CREATE Tower, 1 Create Way, Singapore, 138602, Singapore.
³ School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore.
⁴ C4T CREATE, National Research Foundation, CREATE Tower, 1 Create Way, Singapore, 138602, Singapore.
⁵ Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, CB2 3RA, UK.

PMID: 28102612
DOI: 10.1002/adma.201605957

Abstract

Nickel nanoparticles encapsulated in few-layer nitrogen-doped graphene (Ni@NC) are synthesized by using a Ni-based metal-organic framework as the precursor for high-temperature annealing treatment. The resulting Ni@NC materials exhibit highly efficient and ultrastable electrocatalytic activity toward the hydrogen evolution reaction and the oxygen evolution reaction as well as overall water splitting in alkaline environment.

Keywords: electrocatalysts; graphene; nanomaterials; nickel; water splitting.