Ultrafast Formation of Amorphous Bimetallic Hydroxide Films on 3D Conductive Sulfide Nanoarrays for Large-Current-Density Oxygen Evolution Electrocatalysis

Xu Zou, Yipu Liu, Guo Dong Li, Yuanyuan Wu, Da Peng Liu, Wang Li, Hai Wen Li, Dejun Wang, Yu Zhang, Xiaoxin Zou

    Research output: Contribution to journalArticlepeer-review

    260 Citations (Scopus)

    Abstract

    Developing nonprecious oxygen evolution electrocatalysts that can work well at large current densities is of primary importance in a viable water-splitting technology. Herein, a facile ultrafast (5 s) synthetic approach is reported that produces a novel, efficient, non-noble metal oxygen-evolution nano-electrocatalyst that is composed of amorphous Ni–Fe bimetallic hydroxide film-coated, nickel foam (NF)-supported, Ni3S2 nanosheet arrays. The composite nanomaterial (denoted as Ni-Fe-OH@Ni3S2/NF) shows highly efficient electrocatalytic activity toward oxygen evolution reaction (OER) at large current densities, even in the order of 1000 mA cm−2. Ni-Fe-OH@Ni3S2/NF also gives an excellent catalytic stability toward OER both in 1 m KOH solution and in 30 wt% KOH solution. Further experimental results indicate that the effective integration of high catalytic reactivity, high structural stability, and high electronic conductivity into a single material system makes Ni-Fe-OH@Ni3S2/NF a remarkable catalytic ability for OER at large current densities.

    Original languageEnglish
    Article number1700404
    JournalAdvanced Materials
    Volume29
    Issue number22
    DOIs
    Publication statusPublished - Jun 13 2017

    All Science Journal Classification (ASJC) codes

    • Materials Science(all)
    • Mechanics of Materials
    • Mechanical Engineering

    Fingerprint Dive into the research topics of 'Ultrafast Formation of Amorphous Bimetallic Hydroxide Films on 3D Conductive Sulfide Nanoarrays for Large-Current-Density Oxygen Evolution Electrocatalysis'. Together they form a unique fingerprint.

    Cite this