Resource-Efficient Electrodes with Metallized Woven-Glass-Grid Current Collectors for Lithium-Ion Batteries

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • Yen-Ming Li - , Freiberg University of Mining and Technology (Author)
  • Mohammadjafar Momeni - , Freiberg University of Mining and Technology (Author)
  • Huy Nguyen Dang Duc - , Freiberg University of Mining and Technology (Author)
  • Suvi von Bahder - , Freiberg University of Mining and Technology (Author)
  • Friedrich Roth - , Freiberg University of Mining and Technology (Author)
  • Wolfram Muenchgesang - , Fraunhofer Institute for Wind Energy Systems (Author)
  • Manfred Danziger - , elfolion GmbH (Author)
  • Winfried Voitus - , elfolion GmbH (Author)
  • Dominik Nuss - , Weaving Technology (Research Group) (Author)
  • Cornelia Sennewald - , Chair of Textile Technology (Author)
  • Tilmann Leisegang - , Freiberg University of Mining and Technology (Author)

Abstract

A novel class of resource-efficient, woven-glass-grid current collectors (CCs) for Li-ion batteries is introduced. These CCs are based on ultra-light multifilament glass threads, woven to a grid and surrounded with a thin metal layer (equivalent to a 1 μm-thick metal foil) in a roll-to-roll physical vapor deposition process. This saves >90 % of the required Cu and Al metals and reduces the mass of the CCs by >80 %. At the same time, the gravimetric capacity of anodes with graphite and cathodes with LiCoO2 active material increases by 48 % and 14 %, respectively, while full cells are characterized by an increase of 26 %. Thus, the specific energy can be improved by 25 %. A complete anode and cathode fabrication process from preparing the CCs and electrodes to cells is described and demonstrated in coin cell format. Coin cells with woven-glass-grid CCs achieved 300 cycles with a capacity retention of 93 %, a Coulombic efficiency of >99.9 %, and a higher rate capability until a C-rate of 3 C. This technology opens up new possibilities for designing ultralight CCs with dedicated surface properties for Li and beyond Li batteries.

Details

Original languageEnglish
Article numbere202402233
Number of pages17
JournalChemSusChem
Volume18
Issue number6
Early online date30 Oct 2024
Publication statusPublished - 15 Mar 2025
Peer-reviewedYes

External IDs

PubMed 39473354
Scopus 85211181549
ORCID /0000-0002-3386-891X/work/176861584
ORCID /0009-0006-2932-9303/work/176862298
Scopus 105001064175

Keywords

Keywords

  • current collector, lithium-ion batteries, metallized woven-glass-grid, resource-efficiency, specific energy