Flexible Graphite-Poly(Lactic Acid) Composite Films as Large-Area Conductive Electrodes for Energy Applications

Cameron Jellett, Kalyan Ghosh, Michelle P. Browne, Veronika Urbanová, Martin Pumera

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


For industrial-scale electrochemical applications of renewable energy routes such as electrochemical water splitting or supercapacitors, there is a huge need for flexible, durable, and large-area electrodes. In this study, flexible and conductive poly(lactic acid)/graphite composite films, with a high mass percentage (∼64%) of conductive graphitic material, are prepared without specialized equipment and can be used as stable electrodes in aqueous solutions. These films can be used as a substrate for the hydrogen evolution reaction, which is demonstrated in this study by spray coating with molybdenum(IV) sulfide. Finally, the films are manipulated to construct a flexible solid-state supercapacitor device that can withstand a bending angle of 120° without any change in performance. The geometric characteristics of the electrodes can be manipulated to any shape and size, and as such, they are scalable to large areas.

Original languageEnglish
Pages (from-to)6975-6981
Number of pages7
JournalACS Applied Energy Materials
Issue number7
Publication statusPublished - 2021 Jul 26

Bibliographical note

Funding Information:
M.P. acknowledges the financial support by the Grant Agency of the Czech Republic (GACR EXPRO: 19-26896X), and C.J. acknowledges the research facility provided by the University of Chemistry and Technology, Prague (reg. no. CZ.02.1.01/0.0/0.0/15_003/0000444 financed by the EFRR). K.G. acknowledges Marie Skłodowska-Curie Actions Individual Fellowship (H2020-MSCA-IF EU project 894457–MotionESt) for funding and CEITEC Nano Research Infrastructure supported by MEYS CR (LM2018110) for providing spectroscopy and microscopy characterization facilities.

Publisher Copyright:
© 2021 American Chemical Society

All Science Journal Classification (ASJC) codes

  • Chemical Engineering (miscellaneous)
  • Energy Engineering and Power Technology
  • Electrochemistry
  • Electrical and Electronic Engineering
  • Materials Chemistry


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