Skip to main content
placeholder image

General π-electron-assisted strategy for single-atom (Ir, Pt, Ru, Pd, Fe, and Ni) electrocatalysts with bi-functional active sites toward highly efficient water splitting

Journal Article


Download full-text (Open Access)

Abstract


  • Both the hydrogen evolution reaction (HER) and

    the oxygen evolution reaction (OER) are crucial to water

    splitting, but require alternative active sites. Now, a general pelectron-

    assisted strategy to anchor single-atom sites (M=Ir,

    Pt, Ru, Pd, Fe, Ni) on a heterogeneous support is reported. The

    Matoms can simultaneously anchor on two distinct domains of

    the hybrid support, four-fold N/C atoms (M@NC), and centers

    of Co octahedra (M@Co), which are expected to serve as

    bifunctional electrocatalysts towards the HER and the OER.

    The Ir catalyst exhibits the best water-splitting performance,

    showing a low applied potential of 1.603V to achieve

    10 mAcm@2 in 1.0m KOH solution with cycling over 5 h.

    DFT calculations indicate that the Ir@Co (Ir) sites can

    accelerate the OER, while the Ir@NC3 sites are responsible

    for the enhanced HER, clarifying the unprecedented performance

    of this bifunctional catalyst towards full water splitting.

Authors


  •   Lai, Weihong
  •   Zhang, Li-Fu (external author)
  •   Hua, Wei-Bo (external author)
  •   Indris, Sylvio (external author)
  •   Yan, Zichao (external author)
  •   Hu, Zhe (external author)
  •   Zhang, Binwei (external author)
  •   Liu, Yani (external author)
  •   Wang, Li (external author)
  •   Liu, Min (external author)
  •   Liu, Rong (external author)
  •   Wang, Yunxiao
  •   Wang, Jiazhao
  •   Hu, Zhenpeng (external author)
  •   Liu, Hua K.
  •   Chou, Shulei
  •   Dou, Shi Xue

Publication Date


  • 2019

Citation


  • Lai, W., Zhang, L., Hua, W., Indris, S., Yan, Z., Hu, Z., Zhang, B., Liu, Y., Wang, L., Liu, M., Liu, R., Wang, Y., Wang, J., Hu, Z., Liu, H., Chou, S. & Dou, S. (2019). General π-electron-assisted strategy for single-atom (Ir, Pt, Ru, Pd, Fe, and Ni) electrocatalysts with bi-functional active sites toward highly efficient water splitting. Angewandte Chemie-international Edition, 58 (34), 11868-11873.

Scopus Eid


  • 2-s2.0-85068937656

Ro Full-text Url


  • https://ro.uow.edu.au/context/aiimpapers/article/4802/type/native/viewcontent

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/3747

Number Of Pages


  • 5

Start Page


  • 11868

End Page


  • 11873

Volume


  • 58

Issue


  • 34

Place Of Publication


  • Germany

Abstract


  • Both the hydrogen evolution reaction (HER) and

    the oxygen evolution reaction (OER) are crucial to water

    splitting, but require alternative active sites. Now, a general pelectron-

    assisted strategy to anchor single-atom sites (M=Ir,

    Pt, Ru, Pd, Fe, Ni) on a heterogeneous support is reported. The

    Matoms can simultaneously anchor on two distinct domains of

    the hybrid support, four-fold N/C atoms (M@NC), and centers

    of Co octahedra (M@Co), which are expected to serve as

    bifunctional electrocatalysts towards the HER and the OER.

    The Ir catalyst exhibits the best water-splitting performance,

    showing a low applied potential of 1.603V to achieve

    10 mAcm@2 in 1.0m KOH solution with cycling over 5 h.

    DFT calculations indicate that the Ir@Co (Ir) sites can

    accelerate the OER, while the Ir@NC3 sites are responsible

    for the enhanced HER, clarifying the unprecedented performance

    of this bifunctional catalyst towards full water splitting.

Authors


  •   Lai, Weihong
  •   Zhang, Li-Fu (external author)
  •   Hua, Wei-Bo (external author)
  •   Indris, Sylvio (external author)
  •   Yan, Zichao (external author)
  •   Hu, Zhe (external author)
  •   Zhang, Binwei (external author)
  •   Liu, Yani (external author)
  •   Wang, Li (external author)
  •   Liu, Min (external author)
  •   Liu, Rong (external author)
  •   Wang, Yunxiao
  •   Wang, Jiazhao
  •   Hu, Zhenpeng (external author)
  •   Liu, Hua K.
  •   Chou, Shulei
  •   Dou, Shi Xue

Publication Date


  • 2019

Citation


  • Lai, W., Zhang, L., Hua, W., Indris, S., Yan, Z., Hu, Z., Zhang, B., Liu, Y., Wang, L., Liu, M., Liu, R., Wang, Y., Wang, J., Hu, Z., Liu, H., Chou, S. & Dou, S. (2019). General π-electron-assisted strategy for single-atom (Ir, Pt, Ru, Pd, Fe, and Ni) electrocatalysts with bi-functional active sites toward highly efficient water splitting. Angewandte Chemie-international Edition, 58 (34), 11868-11873.

Scopus Eid


  • 2-s2.0-85068937656

Ro Full-text Url


  • https://ro.uow.edu.au/context/aiimpapers/article/4802/type/native/viewcontent

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/3747

Number Of Pages


  • 5

Start Page


  • 11868

End Page


  • 11873

Volume


  • 58

Issue


  • 34

Place Of Publication


  • Germany