18232899. ELECTROLYTE FOR ANODE-FREE BATTERY simplified abstract (GM Global Technology Operations LLC)

ELECTROLYTE FOR ANODE-FREE BATTERY

Organization Name

GM Global Technology Operations LLC

Inventor(s)

Zhe Li of Shanghai (CN)

Qili Su of Shanghai (CN)

Haijing Liu of Shanghai (CN)

Shiguo Zhang of Changsha (CN)

Minghan Zhou of Changsha (CN)

ELECTROLYTE FOR ANODE-FREE BATTERY - A simplified explanation of the abstract

This abstract first appeared for US patent application 18232899 titled 'ELECTROLYTE FOR ANODE-FREE BATTERY

The abstract describes an anode-free electrochemical cell that cycles lithium ions, comprising a positive electrode assembly, a negative current collector, and a separating layer with an electrolyte.

• Positive electrode assembly includes a positive current collector and a positive electroactive material layer.
• Negative current collector has a surface to receive a negative electroactive material after formation cycles.
• Separating layer contains an electrolyte with a concentrated electrolyte and an ionic liquid.
• Concentrated electrolyte has a lithium salt concentration of 2 M to 6 M.
• Ionic liquid content ranges from 0.5 wt. % to 80 wt. %.

Potential Applications: - Energy storage systems - Electric vehicles - Portable electronic devices

Problems Solved: - Enhanced cycling performance - Improved safety - Increased energy density

Benefits: - Longer cycle life - Higher energy efficiency - Safer operation

Commercial Applications: Title: Advanced Lithium Ion Battery Technology for Energy Storage Systems This technology can revolutionize the energy storage industry by providing safer and more efficient lithium-ion batteries for various applications, including electric vehicles and portable electronics.

Questions about the technology: 1. How does the absence of an anode in this electrochemical cell impact its performance? 2. What are the key advantages of using a concentrated electrolyte and an ionic liquid in the separating layer of the cell?

Original Abstract Submitted

An anode-free electrochemical cell that cycles lithium ions includes a positive electrode assembly having a positive current collector and a positive electroactive material layer, a negative current collector that includes a surface configured to receive a negative electroactive material after one or more formation cycles of the anode-free electrochemical cell, and a separating layer disposed between the positive electroactive material layer and the surface of the negative current collector. The separating layer includes an electrolyte that includes greater than or equal to about 20 wt. % to less than or equal to about 99.5 wt. % of a concentrated electrolyte having a lithium salt concentration greater than or equal to about 2 M to less than or equal to about 6 M, and greater than or equal to about 0.5 wt. % to less than or equal to about 80 wt. % of an ionic liquid.