Author
Listed:
- Chaoqi Zhang
(East China Normal University)
- Pengyue Shan
(Southeast University)
- Yingying Zou
(East China Normal University)
- Tong Bao
(East China Normal University)
- Xinchan Zhang
(East China Normal University)
- Zhijie Li
(East China Normal University)
- Yunying Wang
(East China Normal University)
- Guangfeng Wei
(Tongji University)
- Chao Liu
(East China Normal University)
- Chengzhong Yu
(East China Normal University
The University of Queensland)
Abstract
Electrocatalytic two-electron oxygen reduction reaction (2e− ORR) in seawater offers a sustainable route for hydrogen peroxide (H2O2) production. However, due to the high concentration of Cl− ions and competitive 4e− ORR, there is a lack of efficient and long-term stable seawater electrocatalysts. Here we report a high-performance electrocatalyst design based on NiPS3 nanosheets enabling efficient H2O2 production from seawater. Specifically, the NiPS3 nanosheets deliver a 2e− ORR selectivity of ∼98%, a H2O2 yield of 6.0 mol gcat−1 h−1 and robust stability for over 1,000 h in simulated seawater. Underlying the exciting performance is the synergy of the S2−, Ni2+ and P4+ sites where the octahedral S2− skeleton repels Cl− ions, the Ni2+ sites enable the modest binding strength of *OOH intermediate, and the P4+ sites interact with H2O to trigger the protonation of proximal O atom of *OOH. The seawater electrocatalysis system also allows for scalable synthesis of solid H2O2, tandem oxidation reaction of biomass to organic acid and direct use of the produced H2O2 as a sterilizing agent. Once integrated with photovoltaics, the solar-powered electrolysis device can operate in real seawater. Our findings pave the way for sustainable conversion of seawater into value-added products.
Suggested Citation
Chaoqi Zhang & Pengyue Shan & Yingying Zou & Tong Bao & Xinchan Zhang & Zhijie Li & Yunying Wang & Guangfeng Wei & Chao Liu & Chengzhong Yu, 2025.
"Stable and high-yield hydrogen peroxide electrosynthesis from seawater,"
Nature Sustainability, Nature, vol. 8(5), pages 542-552, May.
Handle:
RePEc:nat:natsus:v:8:y:2025:i:5:d:10.1038_s41893-025-01538-4
DOI: 10.1038/s41893-025-01538-4
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