Abstract
Over the past few years, the development of highly efficient alternative techniques for the in situ production of H 2 O 2 via two-electron oxygen reduction reaction (2 e – ORR) has been the focus of intense research in electrochemistry. This review presents an overview of the recent advances made in H 2 O 2 electrosynthesis based on the application of gas diffusion electrodes (GDE) in the last 3 years. In the first section, we will be looking at the findings in the development of novel modified GDEs with a view to enhancing the activity and selectivity for 2 e – ORR, and the novel methodologies that have been employed for the construction of GDEs. In the second section, we will delve into the advances in the H 2 O 2 electrogeneration in industrial scale and for the treatment of water and wastewater. Finally, we will be discussing about the challenges and opportunities related to the production of H 2 O 2 via 2 e – ORR.
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