Effective Hydrogen Peroxide Production from Electrochemical Water Oxidation
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2021-06-03 |
| Journal | ACS Energy Letters |
| Authors | Sotirios Mavrikis, Maximilian Gƶltz, Samuel C. Perry, Felix Bogdan, Puiki Leung |
| Institutions | University of Southampton, Chongqing University |
| Citations | 141 |
Abstract
Section titled āAbstractāThe two-electron water oxidation reaction (2e- WOR) is progressively gaining traction as a sustainable approach for in situ electrosynthesis of hydrogen peroxide (H2O2). State-of-the-art 2e- WOR electrocatalysts have shown great promise at low electrical currents yet exhibit diminished electrocatalytic capabilities at larger current densities. Herein, by tailoring the boron doping level of boron-doped diamond (BDD) microfilms, we have fabricated an active, selective, and stable electrocatalyst for the 2e- WOR. Experimentally, we find that our modulated BDD films achieve a peak faradaic efficiency of 87%, as well as a record H2O2 production rate of 76.4 Ī¼mol cm-2 min-1, while maintaining a stable electrochemical performance for 10 h at 200 mA cm-2 in carbonate-based solutions. The results reported in this work firmly establish BDD as a primary catalyst candidate for large-scale implementation of the 2e- WOR and synchronously unlock new research avenues for the next-generation design of sp3-structured carbonaceous materials for anodic H2O2 electrosynthesis from water.