A hydrogen-storing quinaldine polymer: Nickel-electrodeposition-assisted hydrogenation and subsequent hydrogen evolution

Ryo Kato, Takahiro Oya, Yuma Shimazaki, Kenichi Oyaizu, Hiroyuki Nishide

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3 Citations (Scopus)


Quinaldine-substituted poly(acrylic acid) (PQD) and its hydrogenated 1,2,3,4-tetrahydroquinaldine derivative (PHQD) were prepared, and a cycle of hydrogen fixing and hydrogen evolution in and from the polymer, respectively, is described. A PQD layer coated on a carbon substrate was electrochemically reduced or hydrogenated using water as a hydrogen source, accompanied by the electrodeposition of nickel microparticles in the polymer layer, to convert PQD to PHQD. The conversion efficiency was enhanced by coating PQD on the substrate as a scaffold of nickel electrodeposition, in comparison with that of quinaldine and PQD dissolved in the electrolyte. The formed PHQD evolved hydrogen by simply warming it in water containing an iridium complex catalyst. Hydrogen fixing and evolution under mild conditions could suggest a new system of hydrogen carriers.

Original languageEnglish
JournalPolymer International
Publication statusAccepted/In press - 2017



  • Hydrogen storage
  • Metal microparticles
  • Polymer-modified electrode
  • Quinaldine

ASJC Scopus subject areas

  • Polymers and Plastics

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