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

Sensors

Graham C. Smith¹  Samuel J. Rowley-Neale²  Alejandro Garcia-Miranda Ferrari²  Craig E. Banks²  Jack P. Hughes²  Aamar F. Khan² 

[1] Department of Natural Sciences, Faculty of Science and Engineering, University of Chester, Thornton Science Park, Pool Lane, Ince, Chester CH2 4NU, UK;Faculty of Science and Engineering, Manchester Metropolitan University, Chester Street, Manchester M1 5GD, UK;

关键词: boron nitride;    screen-printed electrodes (SPEs);    electrochemistry;    oxygen reduction reaction (ORR);   

DOI  :  10.3390/s22093330

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown