Electro Fenton's reaction coupled Zn-air battery for in situ pollutant degradation

Introducing novel functionalities to state-of-the-art batteries has the potential to immensely enrich energy conversion chemistry. Here, we show a Zn-air battery concept wherein pollutant degradation is paired with electric power production facilitated by the in situ transformation of hydrogen perox...

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Bibliographic Details
Published in:Green chemistry : an international journal and green chemistry resource : GC 2023-10, Vol.25 (21), p.8652-8660
Main Authors: Christudas Dargily, Neethu, Kuntoji, Giddaerappa, Mendhe, Rahul Mahadeo, Haridas, Akshay, Thimmappa, Ravikumar, Sharma, Surbhi, Thotiyl, Musthafa Ottakam
Format: Article
Language:English
Subjects:
Acetaminophen
Degradation
Electric power
Electric power production
Energy conversion
Green chemistry
Hydrogen peroxide
Metal air batteries
Open circuit voltage
Phenols
Pollutants
Sustainable energy
Zinc
Zinc-oxygen batteries
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Summary:Introducing novel functionalities to state-of-the-art batteries has the potential to immensely enrich energy conversion chemistry. Here, we show a Zn-air battery concept wherein pollutant degradation is paired with electric power production facilitated by the in situ transformation of hydrogen peroxide (H 2 O 2 ) produced on battery discharge to extremely reactive hydroxyl (˙OH) radical via Fenton's reaction. The battery delivered an open circuit voltage of nearly 1.3 V, a peak power density of nearly 55 mW cm −2 at a peak current density of ∼125 mA cm −2 , while simultaneously degrading pollutants such as Acetaminophen and phenol during the delivery of electric power. The ability of batteries to couple pollutant degradation with electric power delivery adds a novel dimension to their chemistry to perform challenging tasks in the sustainable energy landscape.
ISSN:1463-9262
1463-9270
DOI:10.1039/D3GC03155A