Saft America

Kamen Nechev

Xilin Chen

Frank Cao

Carine Margez Steinway

Chia-Ming Chang

Shih-Chieh Liao

Thomas A Greszler

Dar-Jen Liu

Jian Dong

Tyler Ruff

A multi-layer cathode coating for positive electrode of a rechargeable electrochemical cell (or secondary cell) (such as a lithium-ion secondary battery) and a secondary battery including a cathode having a multi-layer cathode coating. Multi-layer cathode coatings containing blends of one or more cathode active materials in certain weight ratios thereof.

Cathode having multi-layer cathode coating

Pre-lithiation methods using lithium vanadium fluorophosphate (e.g., LiVPOF and its derivatives) ('LVPF') as a cathode active material in a lithium-ion secondary battery. The pre-lithiation methods include compensating for an expected loss of active lithium by selecting LVPF having a specific pre-lithiated chemistry (or a blend of LVPF selected to have a specific pre-lithiated chemistry) and selecting a total amount of the pre-lithiated LVPF. The pre-lithiation methods may include initially charging the lithium-ion secondary battery at the lower of the two charge/discharge plateaus of LVPF to release active lithium.

Pre-lithiation method and pre-lithiated lithium-ion secondary battery

Growing community of inventors

Baldwin, MD, United States of America

Kamen Nechev