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Healable and conductive sulfur iodide for solid-state Li-S batteries.
Zhou, Jianbin; Holekevi Chandrappa, Manas Likhit; Tan, Sha; Wang, Shen; Wu, Chaoshan; Nguyen, Howie; Wang, Canhui; Liu, Haodong; Yu, Sicen; Miller, Quin R S; Hyun, Gayea; Holoubek, John; Hong, Junghwa; Xiao, Yuxuan; Soulen, Charles; Fan, Zheng; Fullerton, Eric E; Brooks, Christopher J; Wang, Chao; Clément, Raphaële J; Yao, Yan; Hu, Enyuan; Ong, Shyue Ping; Liu, Ping.
Affiliation
  • Zhou J; Department of Nanoengineering, University of California, San Diego, La Jolla, CA, USA.
  • Holekevi Chandrappa ML; Department of Nanoengineering, University of California, San Diego, La Jolla, CA, USA.
  • Tan S; Chemistry Division, Brookhaven National Laboratory, Upton, NY, USA.
  • Wang S; Department of Nanoengineering, University of California, San Diego, La Jolla, CA, USA.
  • Wu C; Materials Science and Engineering Program and Texas Center for Superconductivity at the University of Houston, University of Houston, Houston, TX, USA.
  • Nguyen H; Materials Department and Materials Research Laboratory, University of California, Santa Barbara, CA, USA.
  • Wang C; Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD, USA.
  • Liu H; Department of Nanoengineering, University of California, San Diego, La Jolla, CA, USA.
  • Yu S; Department of Nanoengineering, University of California, San Diego, La Jolla, CA, USA.
  • Miller QRS; Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, WA, USA.
  • Hyun G; Department of Nanoengineering, University of California, San Diego, La Jolla, CA, USA.
  • Holoubek J; Department of Nanoengineering, University of California, San Diego, La Jolla, CA, USA.
  • Hong J; Department of Nanoengineering, University of California, San Diego, La Jolla, CA, USA.
  • Xiao Y; Center for Memory and Recording Research, University of California, La Jolla, San Diego, CA, USA.
  • Soulen C; Department of Nanoengineering, University of California, San Diego, La Jolla, CA, USA.
  • Fan Z; Department of Engineering Technology, University of Houston, Houston, TX, USA.
  • Fullerton EE; Center for Memory and Recording Research, University of California, La Jolla, San Diego, CA, USA.
  • Brooks CJ; Honda Research Institute USA, 99P Labs, Columbus, OH, USA.
  • Wang C; Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD, USA.
  • Clément RJ; Materials Department and Materials Research Laboratory, University of California, Santa Barbara, CA, USA.
  • Yao Y; Materials Science and Engineering Program and Texas Center for Superconductivity at the University of Houston, University of Houston, Houston, TX, USA.
  • Hu E; Chemistry Division, Brookhaven National Laboratory, Upton, NY, USA.
  • Ong SP; Department of Nanoengineering, University of California, San Diego, La Jolla, CA, USA. ongsp@ucsd.edu.
  • Liu P; Sustainable Power and Energy Center, University of California, San Diego, La Jolla, CA, USA. ongsp@ucsd.edu.
Nature ; 627(8003): 301-305, 2024 Mar.
Article in En | MEDLINE | ID: mdl-38448596
ABSTRACT
Solid-state Li-S batteries (SSLSBs) are made of low-cost and abundant materials free of supply chain concerns. Owing to their high theoretical energy densities, they are highly desirable for electric vehicles1-3. However, the development of SSLSBs has been historically plagued by the insulating nature of sulfur4,5 and the poor interfacial contacts induced by its large volume change during cycling6,7, impeding charge transfer among different solid components. Here we report an S9.3I molecular crystal with I2 inserted in the crystalline sulfur structure, which shows a semiconductor-level electrical conductivity (approximately 5.9 × 10-7 S cm-1) at 25 °C; an 11-order-of-magnitude increase over sulfur itself. Iodine introduces new states into the band gap of sulfur and promotes the formation of reactive polysulfides during electrochemical cycling. Further, the material features a low melting point of around 65 °C, which enables repairing of damaged interfaces due to cycling by periodical remelting of the cathode material. As a result, an Li-S9.3I battery demonstrates 400 stable cycles with a specific capacity retention of 87%. The design of this conductive, low-melting-point sulfur iodide material represents a substantial advancement in the chemistry of sulfur materials, and opens the door to the practical realization of SSLSBs.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Nature Year: 2024 Type: Article Affiliation country: United States
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Nature Year: 2024 Type: Article Affiliation country: United States