Solid State Li Ion Batteries Using Si Composite Anodes

Technical Report · Sat Mar 30 04:00:00 EDT 2024

DOI:https://doi.org/10.2172/2329523· OSTI ID:2329523

Zhang, Pu ^[1]

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1. Solid Power Operating, Inc., Louisville, CO (United States); Solid Power Operating, Inc.

Solid Power has teamed with Argonne National Laboratory (ANL) to develop an all solid-state lithium-ion battery (ASSB), enabled by a high-capacity Si anode and a solid state electrolyte (SSE). Replacing liquid electrolytes with solid electrolytes addresses the calendar life challenges that currently limit the widespread adoption of Si anodes. In this project, Si-SSE composite materials have been developed with a specific capacity >1500 mAh/g (at electrode level). A Si anode was coated by using a roll-to-roll process. All-solid-state NMC-Si pouch cells have been assembled and tested. Cycle life of 1100 at 100% DOD has been demonstrated in the solid state Si pouch cell. Excellent calendar life is achieved in the cell via a high temperature storage test.

• Research Organization: Solid Power Operating, Inc., Louisville, CO (United States); Argonne National Laboratory (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Sustainable Transportation. Vehicle Technologies Office (VTO)
• DOE Contract Number: EE0009189
• OSTI ID: 2329523
• Report Number(s): DOE-SolidPower--EE0009189
• Country of Publication: United States
• Language: English

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25 ENERGY STORAGE