Journal of Applied Electrochemistry

, Volume 48, Issue 2, pp 201–209 | Cite as

Electrocatalytic hydrogen evolution with cobalt–poly(4-vinylpyridine) metallopolymers

  • Zeynep Kap
  • Emine ÜlkerEmail author
  • Satya Vijaya Kumar Nune
  • Ferdi KaradasEmail author
Research Article
Part of the following topical collections:
  1. Hydrogen production


A facile synthetic pathway using poly(4-vinylpyridine) as a polypyridyl platform is reported for the formation of a metallopolymer. Electrochemical studies indicate that the metallopolymer acts as an efficient H2 evolution catalyst similar to cobalt polypyridyl complexes. It is also observed that the metallopolymer is transformed to cobalt particles when a cathodic potential is applied in the presence of an acid. Electrochemical measurements indicate that an FTO electrode coated with these cobalt particles also acts as an efficient hydrogen evolution catalyst. Approximately 80 µmoles of H2 gas can be collected during 2 h of electrolysis at − 1.5 V (vs. Fc+/0) in the presence of 60 mM of acetic acid. A comprehensive study of the electrochemical and electrocatalytic behavior of cobalt–poly(4-vinylpyridine) is discussed in detail.

Graphical Abstract

Poly(4-vinylpyridine) as a precursor for electrodeposited cobalt particles: a cobalt coat derived by a metallopolymer acts as an efficient H2 evolution catalyst. It can transform to a cobalt coat when a potential above − 1.1 V is applied in acid medium. Exchange current density of 10−2.67 mA cm−2 was observed from the Co-coat at − 1.5 V (vs. Fc+/0).


Cobalt Electrodeposition Hydrogen evolution Poly(4-vinylpyridine) Water reduction 



The authors thank the Science and Technology Council of Turkey, TUBITAK (Project No: 215Z249) for financial support. Emine Ülker thanks TUBITAK for support (Project No: 1929B011500059).

Supplementary material

10800_2018_1152_MOESM1_ESM.docx (1.3 mb)
Supplementary material 1 (DOCX 1298 KB)


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Copyright information

© Springer Science+Business Media B.V., part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of ChemistryBilkent UniversityAnkaraTurkey
  2. 2.Department of Chemistry, Faculty of Arts & SciencesRecep Tayyip Erdogan UniversityRizeTurkey
  3. 3.UNAM-Institute of Materials Science and NanotechnologyBilkent UniversityAnkaraTurkey

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