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

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

  • Yen-Ming Li - , Technische Universität Bergakademie Freiberg (Autor:in)
  • Mohammadjafar Momeni - , Technische Universität Bergakademie Freiberg (Autor:in)
  • Huy Nguyen Dang Duc - , Technische Universität Bergakademie Freiberg (Autor:in)
  • Suvi von Bahder - , Technische Universität Bergakademie Freiberg (Autor:in)
  • Friedrich Roth - , Technische Universität Bergakademie Freiberg (Autor:in)
  • Wolfram Muenchgesang - , Fraunhofer-Institut für Windenergiesysteme (Autor:in)
  • Manfred Danziger - , elfolion GmbH (Autor:in)
  • Winfried Voitus - , elfolion GmbH (Autor:in)
  • Dominik Nuss - , Flächenbildungstechnik (FoG) (Autor:in)
  • Cornelia Sennewald - , Professur für Textiltechnik (Autor:in)
  • Tilmann Leisegang - , Technische Universität Bergakademie Freiberg (Autor:in)

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 LiCoO 2 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

OriginalspracheEnglisch
Aufsatznummere202402233
Seitenumfang17
FachzeitschriftChemSusChem
PublikationsstatusElektronische Veröffentlichung vor Drucklegung - 30 Okt. 2024
Peer-Review-StatusJa

Externe IDs

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

Schlagworte

Schlagwörter

  • Current collector, Lithium-ion batteries, Metallized woven-glass-grid, Resource-efficiency, Specific energy