Novel Composite Membrane Electrolyte Based Batteries for Electrical Vehicles
- Giner, Inc., Newton, MA (United States)
In this project, Giner Inc. (Giner) collaborated with Dr. Liangbing Hu at University of Maryland (UMD), to design and fabricate a unique thin-film solid electrolyte that is highly conductive, mechanically resilient, and electrochemically stable. The proposed project approach is illustrated in Figure 1. We started with three categories of novel solid electrolytes: one is a Li-rich anti-perovskite electrolyte (APE); the second is alkali ion plastic crystal electrolyte (PCE); the third is lithium lanthanum zirconium oxide (Li 7 La 3 Zr 2 O 12, LLZO,). All systems have demonstrated extremely high conductivity (> 1mS/cm) at room temperature, in addition to significantly high electrochemical stability when cycled from 0.0 V to 7.0 V (vs. Li+/Li). These solid electrolytes were incorporated into Giner’s patented porous dimension-stabilized membrane (DSM) substrate via a melting-diffusion approach to construct a hybrid thin-film electrolyte (< 15 μm thick). DSM substrates are porous polymers (e.g., polysulfone, PSU) with a 100 nm to 10 μm pore size and have been fabricated at Giner using commercially available materials and approaches. The impregnation of solid electrolyte powder into the porous polymer resulted in a novel lithium-ion-conducting composite membrane with superior conductivity and mechanical flexibility. The latter has been extremely meaningful to create a stable and uniform interface between the electrode and solid electrolyte. Finally, the composite solid electrolyte film will be integrated with high-voltage cathode (5 V) and Li metal anode to construct full button and pouch cells for battery abuse tests and performance evaluation.
- Research Organization:
- Giner, Inc., Newton, MA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Contributing Organization:
- University of Maryland
- DOE Contract Number:
- SC0021685
- OSTI ID:
- 1884518
- Type / Phase:
- SBIR (Phase I)
- Report Number(s):
- DOE-Giner-21685-1; 10284
- Country of Publication:
- United States
- Language:
- English
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