8f13ac94e0f563843f83def86a839b1a Ene_a2023v16n12p4545.pdf fd26cf12101ee42a7bcd9cddf8640e1f3eddeff9 Ene_a2023v16n12p4545.pdf 8b4c2c88785bae54f7db4fc678f5038931bf3e3de907f4d04ba4cf5bbfbda256 Ene_a2023v16n12p4545.pdf Title: Tubular C3N4 Nanotubes as Metal-Free Sulfur Hosts toward Stable Lithium–Sulfur Batteries Subject: Lithium–sulfur batteries (LSBs) with high energy density have the potential to replace current commercial lithium-ion batteries. However, the shuttle effect and the low conversion kinetics of lithium polysulfide (LiPS) remain the main challenges in the development of LSBs. In this study, a metal-free and simple-to-prepare carbon nitride with a high surface area and tubular morphology (CN-nt) is used as the sulfur host for LSBs. Due to its unique nanostructure and rich active sites, it not only effectively disperses the active sulfur material and anchors soluble polysulfide species, but it also promotes the nucleation process of Li2S, thus achieving fast and sustainable Li-S redox reactions. Experimental results show that the obtained S@CN-nt electrodes exhibit a high sulfur utilization of 1296.2 mAh g-1 at 0.1 C and a significant rate capability of 689.4 mAh g-1 at the high current rate of 3C. More importantly, the capacity retention reaches 87.7% after 500 cycles. This simple strategy of engineering unique carbon-based nanostructured hosts can inspire new ideas for developing cost-effective and metal-free host materials for sulfur-based batteries. Keywords: carbon nitride; nanotube; nanosheet; lithium–sulfur battery; energy storage material Author: Chaoqi Zhang, Ruifeng Du, Sara Martí-Sánchez, Ke Xiao, Dawei Yang, Chaoyue Zhang, Canhuang Li, Guifang Zeng, Xingqi Chang, Ren He, Jordi Arbiol, Junshan Li, Jordi Jacas Biendicho and Andreu Cabot Creator: LaTeX with hyperref Producer: pdfTeX-1.40.21 CreationDate: Tue Jun 6 10:56:51 2023 CEST ModDate: Tue Jun 6 11:05:38 2023 CEST Tagged: no UserProperties: no Suspects: no Form: none JavaScript: no Pages: 13 Encrypted: no Page size: 595.276 x 841.89 pts (A4) Page rot: 0 File size: 3488101 bytes Optimized: no PDF version: 1.7 name type encoding emb sub uni object ID ------------------------------------ ----------------- ---------------- --- --- --- --------- SSNIUI+VnURWPalladioL-Bold Type 1 Custom yes yes no 10 0 KJRTQU+VnURWPalladioL Type 1 Custom yes yes no 15 0 ITYOOP+URWPalladioL-Bold Type 1 Custom yes yes no 19 0 DKZFXV+URWPalladioL-Roma Type 1 Custom yes yes no 24 0 ZJFLCF+URWPalladioL-Ital Type 1 Custom yes yes no 28 0 XYVEUZ+CMSY10 Type 1 Builtin yes yes no 32 0 QDIDFO+TimesNewRomanPS-BoldItalicMT Type 1C WinAnsi yes yes no 50 0 KIJEMF+PalatinoLinotype,Bold TrueType WinAnsi yes yes no 85 0 KIJEMG+PalatinoLinotype CID TrueType Identity-H yes yes yes 88 0 KIJEMH+PalatinoLinotype TrueType WinAnsi yes yes no 94 0 KIJEMJ+PalatinoLinotype,Italic TrueType WinAnsi yes yes no 97 0 KIJFME+PalatinoLinotype TrueType MacRoman yes yes no 100 0 KIJEMF+PalatinoLinotype,Bold TrueType WinAnsi yes yes no 114 0 KIJEMG+PalatinoLinotype CID TrueType Identity-H yes yes yes 117 0 KIJEMH+PalatinoLinotype TrueType WinAnsi yes yes no 123 0 KIJEMJ+PalatinoLinotype,Italic TrueType WinAnsi yes yes no 126 0 KIJFME+PalatinoLinotype TrueType MacRoman yes yes no 129 0 KIJIFL+Symbol Type 1C Custom yes yes yes 143 0 KIJICI+TimesNewRoman CID TrueType Identity-H yes yes yes 148 0 KIJIEJ+Arial TrueType WinAnsi yes yes no 154 0 KIJIEK+TimesNewRoman TrueType WinAnsi yes yes no 157 0 KIJIFM+Calibri CID TrueType Identity-H yes yes yes 160 0 KIJIHM+NSimSun CID TrueType Identity-H yes yes yes 166 0 KIKGDK+Arial,Bold TrueType WinAnsi yes yes no 172 0 KIKGJK+ComicSansMS,Bold TrueType WinAnsi yes yes no 175 0 KIJEMF+PalatinoLinotype,Bold TrueType WinAnsi yes yes no 178 0 KIJEMG+PalatinoLinotype CID TrueType Identity-H yes yes yes 181 0 KIJEMH+PalatinoLinotype TrueType WinAnsi yes yes no 187 0 KIJEMJ+PalatinoLinotype,Italic TrueType WinAnsi yes yes no 190 0 KIJFME+PalatinoLinotype TrueType MacRoman yes yes no 193 0 WUWQEY+PazoMath-Italic Type 1 Builtin yes yes no 240 0 GIGFZE+CMR10 Type 1 Builtin yes yes no 244 0 MPUDFL+PazoMath Type 1 Builtin yes yes no 251 0 KIJIFL+Symbol Type 1C Custom yes yes yes 274 0 KIJICI+TimesNewRoman CID TrueType Identity-H yes yes yes 279 0 KIJIEJ+Arial TrueType WinAnsi yes yes no 285 0 KIKGJK+ComicSansMS,Bold TrueType WinAnsi yes yes no 288 0 KIJEMF+PalatinoLinotype,Bold TrueType WinAnsi yes yes no 291 0 KIJEMG+PalatinoLinotype CID TrueType Identity-H yes yes yes 294 0 KIJEMH+PalatinoLinotype TrueType WinAnsi yes yes no 300 0 KIJEMJ+PalatinoLinotype,Italic TrueType WinAnsi yes yes no 303 0 KIJFME+PalatinoLinotype TrueType MacRoman yes yes no 306 0 TCOFVF+EURM10 Type 1 Builtin yes yes no 570 0 Jhove (Rel. 1.22.1, 2019-04-17) Date: 2023-11-09 02:32:52 CET RepresentationInformation: Ene_a2023v16n12p4545.pdf ReportingModule: PDF-hul, Rel. 1.12.1 (2019-04-17) LastModified: 2023-11-08 14:10:57 CET Size: 3488101 Format: PDF Version: 1.7 Status: Well-Formed and valid SignatureMatches: PDF-hul MIMEtype: application/pdf PDFMetadata: Objects: 751 FreeObjects: 1 IncrementalUpdates: 0 DocumentCatalog: PageLayout: SinglePage PageMode: UseNone Outlines: Item: Title: Introduction Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@4d3167f4 Item: Title: Materials and Methods Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@ed9d034 Item: Title: Results and Discussion Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@6121c9d6 Item: Title: Conclusions Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@87f383f Item: Title: References Destination: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject@4eb7f003 Info: Title: Tubular C3N4 Nanotubes as Metal-Free Sulfur Hosts toward Stable Lithium Sulfur Batteries Author: Chaoqi Zhang, Ruifeng Du, Sara Martí-Sánchez, Ke Xiao, Dawei Yang, Chaoyue Zhang, Canhuang Li, Guifang Zeng, Xingqi Chang, Ren He, Jordi Arbiol, Junshan Li, Jordi Jacas Biendicho and Andreu Cabot Subject: Lithium sulfur batteries (LSBs) with high energy density have the potential to replace current commercial lithium-ion batteries. However, the shuttle effect and the low conversion kinetics of lithium polysulfide (LiPS) remain the main challenges in the development of LSBs. In this study, a metal-free and simple-to-prepare carbon nitride with a high surface area and tubular morphology (CN-nt) is used as the sulfur host for LSBs. Due to its unique nanostructure and rich active sites, it not only effectively disperses the active sulfur material and anchors soluble polysulfide species, but it also promotes the nucleation process of Li2S, thus achieving fast and sustainable Li-S redox reactions. Experimental results show that the obtained S@CN-nt electrodes exhibit a high sulfur utilization of 1296.2 mAh g-1 at 0.1 C and a significant rate capability of 689.4 mAh g-1 at the high current rate of 3C. More importantly, the capacity retention reaches 87.7% after 500 cycles. This simple strategy of engineering unique carbon-based nanostructured hosts can inspire new ideas for developing cost-effective and metal-free host materials for sulfur-based batteries. 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