@article{098ffaaae1d34ed1bc8a458dd47f00c8,
title = "Solar-driven, highly sustained splitting of seawater into hydrogen and oxygen fuels",
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",
author = "Yun Kuang and Kenney, {Michael J.} and Yongtao Meng and Hung, {Wei Hsuan} and Yijin Liu and Huang, {Jianan Erick} and Rohit Prasanna and Pengsong Li and Yaping Li and Lei Wang and Lin, {Meng Chang} and McGehee, {Michael D.} and Xiaoming Sun and Hongjie Dai",
note = "Funding Information: ACKNOWLEDGMENTS. We thank Michael R. Angell for helping to collect spectra data and Andrew Kiss, Doug Van Campen, and Dave Day for support at beamlines 2-2 and 6-2c of the Stanford Synchrotron Radiation Lightsource. This work was partially supported by US Department of Energy (DOE) Grant DE-SC0016165 and Natural Science Foundation of China, National Key Research and Development Project 2016YFF0204402 (Y.K. and X.S.). Part of this work was performed at the Stanford Nano Shared Facilities, supported by National Science Foundation Grant ECCS-1542152. Use of the Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, is supported by the US DOE, Office of Science, Office of Basic Energy Sciences under Contract DE-AC02-76SF00515. Funding Information: We thank Michael R. Angell for helping to collect spectra data and Andrew Kiss, Doug Van Campen, and Dave Day for support at beamlines 2-2 and 6-2c of the Stanford Synchrotron Radiation Lightsource. This work was partially supported by US Department of Energy (DOE) Grant DE-SC0016165 and Natural Science Foundation of China, National Key Research and Development Project 2016YFF0204402 (Y.K. and X.S.). Part of this work was performed at the Stanford Nano Shared Facilities, supported by National Science Foundation Grant ECCS-1542152. Use of the Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, is supported by the US DOE, Office of Science, Office of Basic Energy Sciences under Contract DE-AC02-76SF00515. Publisher Copyright: {\textcopyright} 2019 National Academy of Sciences. All Rights Reserved.",
year = "2019",
month = apr,
doi = "10.1073/pnas.1900556116",
language = "English",
volume = "116",
pages = "6624--6629",
journal = "Proceedings of the National Academy of Sciences of the United States of America",
issn = "0027-8424",
publisher = "National Academy of Sciences",
number = "14",
}