Morphology regulation of metal-organic framework-derived nanostructures for efficient oxygen evolution electrocatalysis

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

8 Scopus Citations
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Author(s)

  • Yuwen Li
  • Mengting Lu
  • Yuhang Wu
  • Qinghong Ji
  • Hui Xu
  • Junkuo Gao
  • Guodong Qian

Detail(s)

Original languageEnglish
Pages (from-to)18215-18219
Journal / PublicationJournal of Materials Chemistry A
Volume8
Issue number35
Online published6 Aug 2020
Publication statusPublished - 21 Sep 2020

Abstract

Understanding the relationship between the morphology of the metal-organic framework-derived nanostructures and their performance as catalysts in the oxygen evolution reaction (OER) is very important and highly desirable, because such a study would provide a new insight into the systematic regulation of the catalyst morphology for performance enhancement in electrocatalysis and photocatalysis. Here, a series of accurately morphology-regulated electrocatalysts (including nanosheets, nanoflowers, nanotubes and aggregations) derived from Hofmann-type metal-organic frameworks (MOFs) are reported for efficient OER. Among all the nanostructures, FeNi nanosheets show the best OER catalytic performance in alkaline media, achieving a low overpotential of 248 mV at 10 mA cm−2, an ultra-small Tafel slope of 31.2 mV dec−1and a satisfactory stability, greatly outperforming the commercial RuOcatalyst. The reason is that FeNi nanosheets possess optimized conductivity, oxygen vacancies and N-related active sites. Our research also demonstrates that electron transfer can be achieved through the precise control of the morphology of precursor MOFs.

Citation Format(s)

Morphology regulation of metal-organic framework-derived nanostructures for efficient oxygen evolution electrocatalysis. / Li, Yuwen; Lu, Mengting; Wu, Yuhang; Ji, Qinghong; Xu, Hui; Gao, Junkuo; Qian, Guodong; Zhang, Qichun.

In: Journal of Materials Chemistry A, Vol. 8, No. 35, 21.09.2020, p. 18215-18219.

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