Energy-saving and product-oriented hydrogen peroxide electrosynthesis enabled by electrochemistry pairing and product engineering

Energy-saving and product-oriented hydrogen peroxide electrosynthesis enabled by electrochemistry pairing and product engineering

Abstract 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 elec...

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Bibliographic Details
Published in:Nature communications 2023-10, Vol.14 (1), p.6263-6263, Article 6263
Main Authors: Qi, Jun, Du, Yadong, Yang, Qi, Jiang, Na, Li, Jiachun, Ma, Yi, Ma, Yangjun, Zhao, Xin, Qiu, Jieshan
Format: Article
Language:eng
Subjects:
Bimetals
Catalysts
Chemical reduction
Current density
Dibenzoyl peroxide
Electrochemistry
Electrolysis
Energy conservation
Ethylene glycol
Evolution
Ferromagnetism
Hydrogen
Hydrogen evolution reactions
Hydrogen peroxide
Hydrogen production
Oxygen evolution reactions
Oxygen reduction reactions
Polyethylene terephthalate
Ruthenium
Sodium perborate
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Summary:Abstract 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.
ISSN:2041-1723
2041-1723