Serpentine Ni3Ge2O5(OH)4 Nanosheets with Tailored Layers and Size for Efficient Oxygen Evolution Reactions

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Ning Zhang
  • Baopeng Yang
  • Yuanqing He
  • Yulu He
  • Xiaohe Liu
  • Min Liu
  • Guoyong Song
  • Gen Chen
  • Anqiang Pan
  • Shuquan Liang
  • Renzhi Ma

Detail(s)

Original languageEnglish
Article number1803015
Journal / PublicationSmall
Volume14
Issue number48
Online published16 Oct 2018
Publication statusPublished - 28 Nov 2018

Abstract

Layered serpentine Ni3Ge2O5(OH)4 is compositionally active and structurally favorable for adsorption and diffusion of reactants in oxygen evolution reactions (OER). However, one of the major problems for these materials is limited active sites and low efficiency for OER. In this regard, a new catalyst consisting of layered serpentine Ni3Ge2O5(OH)4 nanosheets is introduced via a controlled one-step synthetic process where the morphology, size, and layers are well tailored. The theoretical calculations indicate that decreased layers and increased exposure of (100) facets in serpentine Ni3Ge2O5(OH)4 lead to much lower Gibbs free energy in adsorption of reactive intermediates. Experimentally, it is found that the reduction in number of layers with minimized particle size exhibits plenty of highly surface-active sites of (100) facets and demonstrates a much enhanced performance in OER than the corresponding multilayered nanosheets. Such a strategy of tailoring active sites of serpentine Ni3Ge2O5(OH)4 nanosheets offers an effective method to design highly efficient electrocatalysts.

Research Area(s)

  • electrocatalyst, nanosheet, Ni3Ge2O5(OH)4, oxygen evolution reaction, serpentine

Citation Format(s)

Serpentine Ni3Ge2O5(OH)4 Nanosheets with Tailored Layers and Size for Efficient Oxygen Evolution Reactions. / Zhang, Ning; Yang, Baopeng; He, Yuanqing; He, Yulu; Liu, Xiaohe; Liu, Min; Song, Guoyong; Chen, Gen; Pan, Anqiang; Liang, Shuquan; Ma, Renzhi; Venkatesh, Shishir; Roy, Vellaisamy A. L.

In: Small, Vol. 14, No. 48, 1803015, 28.11.2018.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review