Publication detail

The capacitance and electron transfer of 3D-printed graphene electrodes are dramatically influenced by the type of solvent used for pre-treatment

GUSMÃO, R. BROWNE, M. SOFER, Z. PUMERA, M.

Original Title

The capacitance and electron transfer of 3D-printed graphene electrodes are dramatically influenced by the type of solvent used for pre-treatment

Type

journal article in Web of Science

Language

English

Original Abstract

3D-printing (or additive manufacturing) is presently an emerging technology that promises to reshape traditional manufacturing processes. The electrochemistry field can certainly take advantage of this fabrication tool for sensing and energy-related applications. Polymer/graphene filaments commonly used for the fabrication of 3D-printed electrodes show poor electrochemistry in the native state, requiring post-fabrication activation procedures. In the present work, solvent activation of graphene/polymer-based 3D-printed electrodes was investigated, using both polar aprotic solvents (DMF and acetone) and polar protic solvents (EtOH, MeOH, and H2O). Differences were noted with respect to the weight loss and surface morphologies of the activated electrodes prior to their use, depending the solvent used. The electrodes activated in polar aprotic solvents exhibit a dramatic increase in heterogeneous electron transfer rate using the Fe(CN6)(4-/3-) redox couple. Moreover, the activation medium has a crucial influence on the electrochemical double layer. We wish to provide meaningful insight to researchers by comparing results obtained with 3D-printed electrodes fabricated from graphene/polymer filaments and drawing attention to the influence of the solvents used in their activation.

Keywords

3D-printing; Graphene; Fused deposition modelling; Solvent activation; Supercapacitors

Authors

GUSMÃO, R.; BROWNE, M.; SOFER, Z.; PUMERA, M.

Released

1. 5. 2019

ISBN

1388-2481

Periodical

ELECTROCHEMISTRY COMMUNICATIONS

Year of study

102

Number

1

State

United States of America

Pages from

83

Pages to

88

Pages count

6

URL

https://www.sciencedirect.com/science/article/pii/S1388248119300852?via%3Dihub

BibTex

@article{BUT158490,
  author="Rui {Gusmão} and Michelle P. {Browne} and Zdeněk {Sofer} and Martin {Pumera}",
  title="The capacitance and electron transfer of 3D-printed graphene electrodes are dramatically influenced by the type of solvent used for pre-treatment",
  journal="ELECTROCHEMISTRY COMMUNICATIONS",
  year="2019",
  volume="102",
  number="1",
  pages="83--88",
  doi="10.1016/j.elecom.2019.04.004",
  issn="1388-2481",
  url="https://www.sciencedirect.com/science/article/pii/S1388248119300852?via%3Dihub"
}