2D-Hexagonal Boron Nitride Screen-Printed Bulk-Modified Electrochemical Platforms Explored towards Oxygen Reduction Reactions

Khan, AF; Ferrari, A; Hughes, JP; Smith, GC; Banks, CE; Rowley-Neale, SJ

Abstract

A low-cost, scalable and reproducible approach for the mass production of screen-printed electrode (SPE) platforms that have varying percentage mass incorporations of 2D hexagonal boron nitride (2D-hBN) (2D-hBN/SPEs) is demonstrated herein. These novel 2D-hBN/SPEs are explored as a potential metal-free electrocatalysts towards oxygen reduction reactions (ORRs) within acidic media where their performance is evaluated. A 5% mass incorporation of 2D-hBN into the SPEs resulted in the most beneficial ORR catalysis, reducing the ORR onset potential by ca. 200 mV in comparison to bare/unmodified SPEs. Furthermore, an increase in the achievable current of 83% is also exhibited upon the utilisation of a 2D-hBN/SPE in comparison to its unmodified equivalent. The screen-printed fabrication approach replaces the less-reproducible and time-consuming drop-casting technique of 2D-hBN and provides an alternative approach for the large-scale manufacture of novel electrode platforms that can be utilised in a variety of applications.

Citation

Khan, A., Ferrari, A., Hughes, J., Smith, G., Banks, C., & Rowley-Neale, S. (2022). 2D-Hexagonal Boron Nitride Screen-Printed Bulk-Modified Electrochemical Platforms Explored towards Oxygen Reduction Reactions. Sensors, 22(9), https://doi.org/10.3390/s22093330

• Journal Article Type: Article
• Acceptance Date: Apr 19, 2022
• Online Publication Date: Apr 26, 2022
• Publication Date: Apr 26, 2022
• Deposit Date: Jun 12, 2023
• Publicly Available Date: Jun 12, 2023
• Journal: Sensors
• Print ISSN: 1424-8220
• Publisher: MDPI
• Peer Reviewed: Peer Reviewed
• Volume: 22
• Issue: 9
• DOI: https://doi.org/10.3390/s22093330