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Home > Archives > Volume 20, No 8 (2022) > Article

DOI: 10.14704/nq.2022.20.8.NQ44931

Comprehensive Analysis and Development of High Performance Lithium Ion Batteries with Improved Separator

Dr. S. Senthil, Dr. P. Remya

Abstract

Li-ion batteries are commonly used in portable electronic devices due to their outstanding energy and power density. Ideal batteries would possess properties such as long life, light weight, small size, high energy density, safety, low cost, environmental compatibility, and worldwide consumer distribution. Graphite is generally used as the active material in negative electrodes mainly because it can reversibly place Lithium-ions between its many layers. Alloy anodes are promising anode materials for lithium-ion batteries due to their high-energy capacity and safety characteristics. However, the commercial use of alloy anodes has been hindered to date by their low cycle life and high initial capacity loss. Coating marketable polyolefin separators with inorganic materials for lithium-ion batteries is mainly utilized as one of the most effective and financial ways to boost the thermal stability of separators which further helps to improve the safety of batteries. The coating usually involves an organic binder, preferably of high melting point (MP) polymer. To obtain high-performance composite separators, one will need to use a binder with a high MP, good electrolyte wet ability and strong bonding with the coating particles. The binder content should be well controlled. Constructing a coating layer with low tortuosity will be greatly beneficial for cell performance.

Keywords

Graphite, Alloy Anodes, polyolefin separators, composite separators, polymer.

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