Publication detail

Inherent impurities in graphene/polylactic acid filament strongly influence on the capacitive performance of 3D‐printed electrode

GHOSH, K. NG, S. IFFELSBERGER, C. PUMERA, M.

Original Title

Inherent impurities in graphene/polylactic acid filament strongly influence on the capacitive performance of 3D‐printed electrode

Type

journal article in Web of Science

Language

English

Original Abstract

Additive manufacturing or 3D-printing have become promising fabrication techniques in the field of electrochemical energy storage applications such as supercapacitors, and batteries. Of late, a commercially available graphene/polylactic acid (PLA) filament has been commonly used for Fused Deposition Modeling (FDM) 3D-printing in the fabrication of electrodes for supercapacitors and Li-ion batteries. This graphene/PLA filament contains metal-based impurities such as titanium oxide and iron oxide. In this study, we show a strong influence of inherent impurities in the graphene/PLA filament for supercapacitor applications. A 3D-printed electrode is prepared and subsequently thermally activated for electrochemical measurement. A deep insight has been taken to look into the pseudocapacitive contribution from the metal-based impurities which significantly enhanced the overall capacitance of the 3D-printed graphene/PLA electrode. A systematic approach has been shown to remove the impurities from the printed electrodes. This has a broad implication on the interpretation of the capacitance of 3D-printed composites.

Keywords

3D-printing; energy storage; graphene; PLA; impurities; supercapacitors

Authors

GHOSH, K.; NG, S.; IFFELSBERGER, C.; PUMERA, M.

Released

1. 12. 2020

ISBN

0947-6539

Periodical

CHEMISTRY-A EUROPEAN JOURNAL

Year of study

26

Number

67

State

Federal Republic of Germany

Pages from

15746

Pages to

15753

Pages count

8

URL

https://doi.org/10.1002/chem.202004250

BibTex

@article{BUT167778,
  author="Kalyan {Ghosh} and Siow Woon {Ng} and Christian {Iffelsberger} and Martin {Pumera}",
  title="Inherent impurities in graphene/polylactic acid filament strongly influence on the capacitive performance of 3D‐printed electrode",
  journal="CHEMISTRY-A EUROPEAN JOURNAL",
  year="2020",
  volume="26",
  number="67",
  pages="15746--15753",
  doi="10.1002/chem.202004250",
  issn="0947-6539",
  url="https://doi.org/10.1002/chem.202004250"
}