Question

Question 4. List three parameters that impact lithium-ion battery degradation. Which char mitigates electrolyte decomposition in these high voltage batteries? teristic

Answer 1

Main reasons for Lithium-ion batteries are,

1. Mechanical degradation of electrodes and loss of stack pressure in pouch type cells.

2. Formation of electrolyte oxidation (EO) at the cathode.

3. Growth of solid electrolyte interface (SEI) at the anode.

4. Lithium plating on the surface of anode caused by high charged rates.

Characteristics mitigate electrolyte decomposition,

1. Accurate cell design and correct electrolyte additives.

2. Keeping operating temperature of battery low.

3. Correct choice electrolyte additives is key for reducing SEI, EO.