A sulfite/air fuel cell for H 2 O 2 electrosynthesis
H 2 O 2 electrosynthesis is a promising alternative to the industry-dominant anthraquinone process. Unfortunately, currently, it suffers from high energy consumption. In this work, we couple the sulfite oxidation reaction with the 2e − route oxygen reduction reaction to operate as a self-driven sulf...
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| Published in | Green chemistry : an international journal and green chemistry resource : GC Vol. 25; no. 10; pp. 3940 - 3947 |
|---|---|
| Main Authors | , , |
| Format | Journal Article |
| Language | English |
| Published |
22.05.2023
|
| Online Access | Get full text |
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| Summary: | H
2
O
2
electrosynthesis is a promising alternative to the industry-dominant anthraquinone process. Unfortunately, currently, it suffers from high energy consumption. In this work, we couple the sulfite oxidation reaction with the 2e
−
route oxygen reduction reaction to operate as a self-driven sulfite/air fuel cell for H
2
O
2
electrosynthesis. An Au–Pd/C catalyst is synthesized as an H
2
O
2
electrosynthesis catalyst, which exhibits good 2e
−
route oxygen reduction reaction activity and selectivity. The fuel cell can realize an open cell voltage of 0.52 V and a discharge current density of 24.48 mA cm
−2
at 0 V. Ammonia desulphurization wastewater is chosen as the fuel, which can achieve both H
2
O
2
electrosynthesis cost reduction and recycling of energy and resources from waste. A long-term test demonstrates the feasibility of the sulfite/air fuel cell, which can produce electricity and H
2
O
2
simultaneously. |
|---|---|
| ISSN: | 1463-9262 1463-9270 |
| DOI: | 10.1039/D3GC00413A |