Solar-driven, highly sustained splitting of seawater into hydrogen and oxygen fuels

Yun Kuang; Michael J. Kenney; Yongtao Meng; Wei Hsuan Hung; Yijin Liu; Jianan Erick Huang; Rohit Prasanna; Pengsong Li; Yaping Li; Lei Wang; Meng Chang Lin; Michael D. McGehee; Xiaoming Sun; Hongjie Dai

doi:10.1073/pnas.1900556116

Solar-driven, highly sustained splitting of seawater into hydrogen and oxygen fuels

Yun Kuang, Michael J. Kenney, Yongtao Meng, Wei Hsuan Hung, Yijin Liu, Jianan Erick Huang, Rohit Prasanna, Pengsong Li, Yaping Li, Lei Wang, Meng Chang Lin, Michael D. McGehee, Xiaoming Sun, Hongjie Dai

材料科學與工程研究所

研究成果: 雜誌貢獻 › 期刊論文 › 同行評審

675 引文斯高帕斯（Scopus）

摘要

Electrolysis of water to generate hydrogen fuel is an attractive renewable energy storage technology. However, grid-scale freshwater electrolysis would put a heavy strain on vital water resources. Developing cheap electrocatalysts and electrodes that can sustain seawater splitting without chloride corrosion could address the water scarcity issue. Here we present a multilayer anode consisting of a nickel–iron hydroxide (NiFe) electrocatalyst layer uniformly coated on a nickel sulfide (NiSx) layer formed on porous Ni foam (NiFe/NiSx-Ni), affording superior catalytic activity and corrosion resistance in solar-driven alkaline seawater electrolysis operating at industrially required current densities (0.4 to 1 A/cm ² ) over 1,000 h. A continuous, highly oxygen evolution reaction-active NiFe electrocatalyst layer drawing anodic currents toward water oxidation and an in situ-generated polyatomic sulfate and carbonate-rich passivating layers formed in the anode are responsible for chloride repelling and superior corrosion resistance of the salty-water-splitting anode.

原文	???core.languages.en_GB???
頁（從 - 到）	6624-6629
頁數	6
期刊	Proceedings of the National Academy of Sciences of the United States of America
卷	116
發行號	14
DOIs	https://doi.org/10.1073/pnas.1900556116
出版狀態	已出版 - 2 4月 2019

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10.1073/pnas.1900556116

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Kuang, Y., Kenney, M. J., Meng, Y., Hung, W. H., Liu, Y., Huang, J. E., Prasanna, R., Li, P., Li, Y., Wang, L., Lin, M. C., McGehee, M. D., Sun, X., & Dai, H. (2019). Solar-driven, highly sustained splitting of seawater into hydrogen and oxygen fuels. Proceedings of the National Academy of Sciences of the United States of America, 116(14), 6624-6629. https://doi.org/10.1073/pnas.1900556116

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abstract = " Electrolysis of water to generate hydrogen fuel is an attractive renewable energy storage technology. However, grid-scale freshwater electrolysis would put a heavy strain on vital water resources. Developing cheap electrocatalysts and electrodes that can sustain seawater splitting without chloride corrosion could address the water scarcity issue. Here we present a multilayer anode consisting of a nickel–iron hydroxide (NiFe) electrocatalyst layer uniformly coated on a nickel sulfide (NiSx) layer formed on porous Ni foam (NiFe/NiSx-Ni), affording superior catalytic activity and corrosion resistance in solar-driven alkaline seawater electrolysis operating at industrially required current densities (0.4 to 1 A/cm 2 ) over 1,000 h. A continuous, highly oxygen evolution reaction-active NiFe electrocatalyst layer drawing anodic currents toward water oxidation and an in situ-generated polyatomic sulfate and carbonate-rich passivating layers formed in the anode are responsible for chloride repelling and superior corrosion resistance of the salty-water-splitting anode.",

keywords = "Anticorrosion, Electrocatalysis, Hydrogen production, Seawater splitting, Solar driven",

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Kuang, Y, Kenney, MJ, Meng, Y, Hung, WH, Liu, Y, Huang, JE, Prasanna, R, Li, P, Li, Y, Wang, L, Lin, MC, McGehee, MD, Sun, X & Dai, H 2019, 'Solar-driven, highly sustained splitting of seawater into hydrogen and oxygen fuels', Proceedings of the National Academy of Sciences of the United States of America, 卷 116, 編號 14, 頁 6624-6629. https://doi.org/10.1073/pnas.1900556116

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T1 - Solar-driven, highly sustained splitting of seawater into hydrogen and oxygen fuels

AU - Kuang, Yun

AU - Kenney, Michael J.

AU - Meng, Yongtao

AU - Hung, Wei Hsuan

AU - Liu, Yijin

AU - Huang, Jianan Erick

AU - Prasanna, Rohit

AU - Li, Pengsong

AU - Li, Yaping

AU - Wang, Lei

AU - Lin, Meng Chang

AU - McGehee, Michael D.

AU - Sun, Xiaoming

AU - Dai, Hongjie

PY - 2019/4/2

Y1 - 2019/4/2

N2 - Electrolysis of water to generate hydrogen fuel is an attractive renewable energy storage technology. However, grid-scale freshwater electrolysis would put a heavy strain on vital water resources. Developing cheap electrocatalysts and electrodes that can sustain seawater splitting without chloride corrosion could address the water scarcity issue. Here we present a multilayer anode consisting of a nickel–iron hydroxide (NiFe) electrocatalyst layer uniformly coated on a nickel sulfide (NiSx) layer formed on porous Ni foam (NiFe/NiSx-Ni), affording superior catalytic activity and corrosion resistance in solar-driven alkaline seawater electrolysis operating at industrially required current densities (0.4 to 1 A/cm 2 ) over 1,000 h. A continuous, highly oxygen evolution reaction-active NiFe electrocatalyst layer drawing anodic currents toward water oxidation and an in situ-generated polyatomic sulfate and carbonate-rich passivating layers formed in the anode are responsible for chloride repelling and superior corrosion resistance of the salty-water-splitting anode.

AB - Electrolysis of water to generate hydrogen fuel is an attractive renewable energy storage technology. However, grid-scale freshwater electrolysis would put a heavy strain on vital water resources. Developing cheap electrocatalysts and electrodes that can sustain seawater splitting without chloride corrosion could address the water scarcity issue. Here we present a multilayer anode consisting of a nickel–iron hydroxide (NiFe) electrocatalyst layer uniformly coated on a nickel sulfide (NiSx) layer formed on porous Ni foam (NiFe/NiSx-Ni), affording superior catalytic activity and corrosion resistance in solar-driven alkaline seawater electrolysis operating at industrially required current densities (0.4 to 1 A/cm 2 ) over 1,000 h. A continuous, highly oxygen evolution reaction-active NiFe electrocatalyst layer drawing anodic currents toward water oxidation and an in situ-generated polyatomic sulfate and carbonate-rich passivating layers formed in the anode are responsible for chloride repelling and superior corrosion resistance of the salty-water-splitting anode.

KW - Anticorrosion

KW - Electrocatalysis

KW - Hydrogen production

KW - Seawater splitting

KW - Solar driven

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JF - Proceedings of the National Academy of Sciences of the United States of America

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ER -

Solar-driven, highly sustained splitting of seawater into hydrogen and oxygen fuels

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