Design of bimetallic 3D-printed electrocatalysts via galvanic replacement to enhance energy conversion systems

Jose Muñoz, Christian Iffelsberger, Edurne Redondo, Martin Pumera

Research output: Contribution to journalArticlepeer-review

Abstract

3D-printing (also known as additive manufacturing) has recently emerged as an appealing technology to fight against the mainstream use of carbon-based fossil fuels by the large-scale, decentralized, and sustainable manufacturing of 3D-printed electrodes for energy conversion devices. Although promising strides have been made in this area, the tunability and implementation of cost-effective metal-based 3D-printed electrodes is a challenge. Herein, a straightforward method is reported to produce bimetallic 3D-printed electrodes with built-in noble metal catalysts via galvanic replacement. For this goal, a commercially available copper/polylactic acid composite filament has been exploited for the fabrication of Cu-based 3D-printed electrodes (3D-Cu) using fused filament fabrication (FFF) technology. The subsequent electroless deposition of an active noble metal catalyst (viz. Pd) onto the 3D-Cu surface has been carried out via galvanic exchange. A detailed electrochemical study run by scanning electrochemical microscopy (SECM) has revealed that the resulting bimetallic 3D-PdCu electrode exhibits enhanced capabilities by energy conversion related reactions —hydrogen evolution reaction (HER) and oxygen reduction reaction (ORR)— when compared with the monometallic 3D-Cu counterpart. Thus, this simple functionalization approach provides a custom way for manufacturing functional metal-based 3D-printed electronics harboring noble metal catalysts to improve energy-converting applications on-demand and beyond.

Original languageEnglish
Article number121609
JournalApplied Catalysis B: Environmental
Volume316
DOIs
Publication statusPublished - 2022 Nov 5

Bibliographical note

Funding Information:
Dr. J.M. and Dr. C.I. acknowledge the financial support from the European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie Grant agreement nos. 101027867 and 888797, respectively. Prof. M.P. acknowledges the financial support of the Grant Agency of the Czech Republic by the GACR EXPRO 19-26896X Project. The authors acknowledge CzechNanoLab Research Infrastructure supported by LM2018110 MEYS CR 2020–2022. The authors acknowledge the SelOxCat group from Universitat Autònoma de Barcelona (UAB) for the help and discussion received during HER experiments.

Funding Information:
Dr. J.M. and Dr. C.I. acknowledge the financial support from the European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie Grant agreement nos. 101027867 and 888797 , respectively. Prof. M.P. acknowledges the financial support of the Grant Agency of the Czech Republic by the GACR EXPRO 19-26896X Project. The authors acknowledge CzechNanoLab Research Infrastructure supported by LM2018110 MEYS CR 2020–2022 . The authors acknowledge the SelOxCat group from Universitat Autònoma de Barcelona (UAB) for the help and discussion received during HER experiments.

Publisher Copyright:
© 2022 Elsevier B.V.

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Environmental Science(all)
  • Process Chemistry and Technology

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