Energy-saving and product-oriented hydrogen peroxide electrosynthesis enabled by electrochemistry pairing and product engineering
Hydrogen peroxide (H 2 O 2 ) electrosynthesis through oxygen reduction reaction (ORR) is drawing worldwide attention, whereas suffering seriously from the sluggish oxygen evolution reaction (OER) and the difficult extraction of thermodynamically unstable H 2 O 2 . Herein, we present an electrosynthe...
Gespeichert in:
Veröffentlicht in: | Nature communications 2023-10, Vol.14 (1), p.6263-12, Article 6263 |
---|---|
Hauptverfasser: | , , , , , , , , |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | Hydrogen peroxide (H
2
O
2
) electrosynthesis through oxygen reduction reaction (ORR) is drawing worldwide attention, whereas suffering seriously from the sluggish oxygen evolution reaction (OER) and the difficult extraction of thermodynamically unstable H
2
O
2
. Herein, we present an electrosynthesis protocol involving coupling ORR-to-H
2
O
2
with waste polyethylene terephthalate (PET) upcycling and the first H
2
O
2
conversion strategy. Ni-Mn bimetal- and onion carbon-based catalysts are designed to catalyze ORR-to-H
2
O
2
and ethylene glycol electrooxidation with the Faradaic efficiency of 97.5% (H
2
O
2
) and 93.0% (formate). This electrolysis system runs successfully at only 0.927 V to achieve an industrial-scale current density of 400 mA cm
−2
, surpassing all reported H
2
O
2
electrosynthesis systems. H
2
O
2
product is upgraded through two downstream routes of converting H
2
O
2
into sodium perborate and dibenzoyl peroxide. Techno-economic evolution highlights the high gross profit of the ORR || PET upcycling protocol over HER || PET upcycling and ORR || OER. This work provides an energy-saving methodology for the electrosynthesis of H
2
O
2
and other chemicals.
The development of robust catalysts that could work under industrial-scale current densities bring promise but also a challenge for hydrogen production. Here, the authors report an in situ activation method to produce ferromagnetic ruthenium clusters that can catalyze the hydrogen evolution reaction at high current densities. |
---|---|
ISSN: | 2041-1723 2041-1723 |
DOI: | 10.1038/s41467-023-41997-x |