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Supporting data for "Cellulose separators with integrated carbon nanotube interlayers for lithium-sulfur batteries: an investigation into the complex interplay between cell components"

Yu-Chuan Chien; Ruijun Pan; Ming-Tao Lee; Leif Nyholm; Daniel Brandell; Matthew J. Lacey


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{
  "inLanguage": {
    "alternateName": "eng", 
    "@type": "Language", 
    "name": "English"
  }, 
  "description": "<p>This is the dataset of electrochemical experiments for our publication &quot;Cellulose separators with integrated carbon nanotube interlayers for lithium-sulfur batteries: an investigation into the complex interplay between cell components&quot;. This archive contains the raw data and scripts written in R used in the analysis and presentation of the results in this manuscript.</p>\n\n<p><strong>Abstract for the manuscript:</strong></p>\n\n<p>This work aims to address two major roadblocks in the development of lithium-sulfur (Li-S) batteries: the inefficient deposition of Li on the metallic Li electrode and the parasitic &ldquo;polysulfide redox shuttle&rdquo;. These roadblocks are here approached, respectively, by the combination of a cellulose separator with a cathode-facing conductive porous carbon interlayer, based on their previously reported individual benefits. The cellulose separator increases cycle life by 33%, and the interlayer by a further 25%, in test cells with positive electrodes with practically relevant specifications and a relatively low electrolyte/sulfur (E/S) ratio. Despite the prolonged cycle life, the combination of the interlayer and cellulose separator <em>increases</em> the polysulfide shuttle current, leading to reduced Coulombic efficiency. Based on XPS analyses, the latter is ascribed to a change in the composition of the solid electrolyte interphase (SEI) on Li. Meanwhile, electrolyte decomposition is found to be slower in cells with cellulose-based separators, which explains their longer cycle life. These counterintuitive observations demonstrate the complicated interactions between the cell components in the Li-S system and how strategies aiming to mitigate one unwanted process may exacerbate another. This study demonstrates the value of a holistic approach to the development of Li-S chemistry.</p>\n\n<p>Manuscript preprint <a href=\"http://dx.doi.org/10.26434/chemrxiv.8835728\">available at ChemRxiv</a> (pending approval as of 9/7/19).</p>", 
  "license": "https://creativecommons.org/licenses/by/4.0/legalcode", 
  "creator": [
    {
      "affiliation": "Uppsala University", 
      "@id": "https://orcid.org/0000-0003-4767-9471", 
      "@type": "Person", 
      "name": "Yu-Chuan Chien"
    }, 
    {
      "affiliation": "Uppsala University", 
      "@type": "Person", 
      "name": "Ruijun Pan"
    }, 
    {
      "affiliation": "Uppsala University", 
      "@type": "Person", 
      "name": "Ming-Tao Lee"
    }, 
    {
      "affiliation": "Uppsala University", 
      "@type": "Person", 
      "name": "Leif Nyholm"
    }, 
    {
      "affiliation": "Uppsala University", 
      "@type": "Person", 
      "name": "Daniel Brandell"
    }, 
    {
      "affiliation": "Uppsala University", 
      "@id": "https://orcid.org/0000-0002-0366-7228", 
      "@type": "Person", 
      "name": "Matthew J. Lacey"
    }
  ], 
  "url": "https://zenodo.org/record/3274377", 
  "datePublished": "2019-07-09", 
  "@context": "https://schema.org/", 
  "distribution": [
    {
      "contentUrl": "https://zenodo.org/api/files/c1714633-2711-46d6-adef-fb5506e06233/ccc-supportingdata.zip", 
      "encodingFormat": "zip", 
      "@type": "DataDownload"
    }
  ], 
  "identifier": "https://doi.org/10.5281/zenodo.3274377", 
  "@id": "https://doi.org/10.5281/zenodo.3274377", 
  "@type": "Dataset", 
  "name": "Supporting data for \"Cellulose separators with integrated carbon nanotube interlayers for lithium-sulfur batteries: an investigation into the complex interplay between cell components\""
}
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