ae280804ba0efc755692d0d8a3c7c208 pmc_9000688.pdf 72443257e1b4780024f7f2d78c5654ac5d360d56 pmc_9000688.pdf 03a8f7d2cd49f97586e925d6c5bb10e0c407124ffe758081fb13502cb5717944 pmc_9000688.pdf Title: MOF-Derived Ultrathin Cobalt Molybdenum Phosphide Nanosheets for Efficient Electrochemical Overall Water Splitting Subject: The development of high-performance and cost-effective earth-abundant transition metal-based electrocatalysts is of major interest for several key energy technologies, including water splitting. Herein, we report the synthesis of ultrathin CoMoP nanosheets through a simple ion etching and phosphorization method. The obtained catalyst exhibits outstanding electrocatalytic activity and stability towards oxygen and hydrogen evolution reactions (OER and HER), with overpotentials down to 273 and 89 mV at 10 mA cm-2, respectively. The produced CoMoP nanosheets are also characterized by very small Tafel slopes, 54.9 and 69.7 mV dec-1 for OER and HER, respectively. When used as both cathode and anode electrocatalyst in the overall water splitting reaction, CoMoP-based cells require just 1.56 V to reach 10 mA cm-2 in alkaline media. This outstanding performance is attributed to the proper composition, weak crystallinity and two-dimensional nanosheet structure of the electrocatalyst. Keywords: MOF; phosphide; nanosheet; water splitting Author: Xiang Wang, Linlin Yang, Congcong Xing, Xu Han, Ruifeng Du, Ren He, Pablo Guardia, Jordi Arbiol and Andreu Cabot Creator: LaTeX with hyperref Producer: pdfTeX-1.40.21 CreationDate: Sun Mar 27 11:18:54 2022 CEST ModDate: Sun Mar 27 11:34:58 2022 CEST Tagged: no UserProperties: no Suspects: no Form: none JavaScript: no Pages: 12 Encrypted: no Page size: 595.276 x 841.89 pts (A4) Page rot: 0 File size: 2500071 bytes Optimized: no PDF version: 1.7 name type encoding emb sub uni object ID ------------------------------------ ----------------- ---------------- --- --- --- --------- UKFICR+VnURWPalladioL Type 1 Custom yes yes no 10 0 XRWQKS+URWPalladioL-Bold Type 1 Custom yes yes no 15 0 FZXKKT+URWPalladioL-Roma Type 1 Custom yes yes no 20 0 XHIPWK+URWPalladioL-Ital Type 1 Custom yes yes no 24 0 XFIZIB+CMSY10 Type 1 Builtin yes yes no 28 0 MCBCCI+SourceSansRoman-Regular Type 1C Custom yes yes no 36 0 MCBCCM+SourceSansRoman.613wght 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BCDHEE+PalatinoLinotype-Roman CID TrueType Identity-H yes yes yes 167 0 SPXLNH+PazoMath Type 1 Builtin yes yes no 180 0 BCDEEE+PalatinoLinotype-Bold TrueType WinAnsi yes yes no 188 0 BCDFEE+PalatinoLinotype-Roman TrueType WinAnsi yes yes no 192 0 BCDGEE+PalatinoLinotype-Italic TrueType WinAnsi yes yes no 196 0 BCDHEE+PalatinoLinotype-Roman CID TrueType Identity-H yes yes yes 200 0 BCDEEE+PalatinoLinotype-Bold TrueType WinAnsi yes yes no 217 0 BCDFEE+PalatinoLinotype-Roman TrueType WinAnsi yes yes no 221 0 BCDGEE+PalatinoLinotype-Italic TrueType WinAnsi yes yes no 225 0 BCDHEE+PalatinoLinotype-Roman CID TrueType Identity-H yes yes yes 229 0 BCDEEE+PalatinoLinotype-Bold TrueType WinAnsi yes yes no 246 0 SymbolMT CID TrueType Identity-H yes no yes 250 0 BCDFEE+PalatinoLinotype-Roman TrueType WinAnsi yes yes no 258 0 BCDGEE+PalatinoLinotype-Italic TrueType WinAnsi yes yes no 262 0 BCDHEE+PalatinoLinotype-Roman CID TrueType Identity-H yes yes yes 266 0 Jhove (Rel. 1.22.1, 2019-04-17) Date: 2022-11-04 02:26:08 CET RepresentationInformation: pmc_9000688.pdf ReportingModule: PDF-hul, Rel. 1.12.1 (2019-04-17) LastModified: 2022-04-26 17:55:36 CEST Size: 2500071 Format: PDF Version: 1.7 Status: Well-Formed and valid SignatureMatches: PDF-hul MIMEtype: application/pdf PDFMetadata: Objects: 503 FreeObjects: 1 IncrementalUpdates: 0 DocumentCatalog: PageLayout: SinglePage PageMode: UseNone Outlines: Item: Title: Introduction Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@4923ab24 Item: Title: Materials and Methods Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@44c8afef Children: Item: Title: Chemicals Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@7b69c6ba Item: Title: Preparation of ZIF-67 Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@46daef40 Item: Title: Preparation of Mo Co MOFs Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@12f41634 Item: Title: Preparation of CoP and CoMoP Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@13c27452 Item: Title: Structural Characterization Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@262b2c86 Item: Title: Electrochemical Measurements Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@371a67ec Item: Title: Results and Discussion Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@5ed828d Children: Item: Title: Characterization of Electrocatalysts Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@50d0686 Item: Title: Oxygen Evolution Reaction Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@7a3d45bd Item: Title: Hydrogen Evolution Reaction Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@1e7c7811 Item: Title: Overall Water Splitting Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@77ec78b9 Item: Title: Conclusions Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@1a3869f4 Item: Title: References Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@a38d7a3 Info: Title: MOF-Derived Ultrathin Cobalt Molybdenum Phosphide Nanosheets for Efficient Electrochemical Overall Water Splitting Author: Xiang Wang, Linlin Yang, Congcong Xing, Xu Han, Ruifeng Du, Ren He, Pablo Guardia, Jordi Arbiol and Andreu Cabot Subject: The development of high-performance and cost-effective earth-abundant transition metal-based electrocatalysts is of major interest for several key energy technologies, including water splitting. Herein, we report the synthesis of ultrathin CoMoP nanosheets through a simple ion etching and phosphorization method. The obtained catalyst exhibits outstanding electrocatalytic activity and stability towards oxygen and hydrogen evolution reactions (OER and HER), with overpotentials down to 273 and 89 mV at 10 mA cm-2, respectively. The produced CoMoP nanosheets are also characterized by very small Tafel slopes, 54.9 and 69.7 mV dec-1 for OER and HER, respectively. When used as both cathode and anode electrocatalyst in the overall water splitting reaction, CoMoP-based cells require just 1.56 V to reach 10 mA cm-2 in alkaline media. This outstanding performance is attributed to the proper composition, weak crystallinity and two-dimensional nanosheet structure of the electrocatalyst. 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