Chang Il Ju

Conflicts of Interest The authors declare no conflicts of interest. Data Availability Statement The data that support the findings of this study are available from the corresponding author upon reasonable request. Supporting Information Filename Description smll72595-sup-0001-SuppMat.pdf2.2 MB Supporting File: smll72595-sup-0001-SuppMat.pdf. References 1, “Sustainable Hydrogen Production,” Science 305 (2004): 972–974.

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