期刊
INORGANIC CHEMISTRY FRONTIERS
卷 8, 期 20, 页码 4528-4535出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1qi00640a
关键词
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资金
- National Natural Science Foundation of China for Youths [21905118]
- China Postdoctoral Science Foundation [2020M673037, 2019M651716]
- Jiangsu Provincial Agricultural Science and Technology Independent Innovation Fund [CX(20)3081]
- Priority Academic Program Development of the Jiangsu Higher Education Institutions
The development of a promising and novel bifunctional electrocatalytic material for water splitting, NCS/NF, shows low potential in the presence of urea, laying the foundation for exploring the feasibility of low energy-intensive and large-scale hydrogen production in the future.
Hydrogen production by water splitting is considered to be a feasible and energy-conserving way to develop renewable energy. Compared with water electrolysis which involves oxygen/hydrogen evolution reaction (OER/HER), the introduction of urea not only improves the energy conversion efficiency of water electrolysis but also involves the urea-rich wastewater treatment. In this work, a promising and novel bifunctional electrocatalytic material, bimetal nickel-cobalt sulfide nanosheet arrays on Ni Foam (NCS/NF), is developed as an electrocatalyst for water splitting. Benefiting from the sulfuration effect, which facilitates the formation of the high-valence states of Ni and Co during the oxidation process, the NCS/NF demonstrates a low potential of 1.46 V for the OER and 1.31 V for the UOR at 10 mA cm(-2). When utilized in a water-splitting system with urea, the voltage is further reduced to 1.397 V at 10 mA cm(-2). The result lays the foundation for exploring the feasibility of low energy-intensive and large-scale hydrogen production in the future.
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