Application of Sodium Carboxymethyl Cellulose in Non-aqueous Electrolyte Secondary Battery

Sodium carboxymethyl cellulose (NaCMC) is a water-soluble, high molecular weight polymer derived from cellulose. Its unique properties, such as high water retention, excellent film-forming ability, and good stability, make it a valuable ingredient in a wide range of industrial applications. In recent years, NaCMC has emerged as a promising candidate for use in non-aqueous electrolyte secondary batteries due to its ability to improve battery performance and safety. In this article, we will discuss the application of NaCMC in non-aqueous electrolyte secondary batteries.

Non-aqueous electrolyte secondary batteries are widely used in portable electronic devices, electric vehicles, and energy storage systems due to their high energy density and long cycle life. However, the use of non-aqueous electrolytes poses some safety concerns, such as thermal instability, flammability, and leakage. NaCMC has been shown to address these issues by improving the safety and performance of non-aqueous electrolyte secondary batteries.

1. Electrolyte stability: The stability of the electrolyte is crucial to the performance and safety of the battery. NaCMC can improve the stability of the electrolyte by reducing its evaporation rate, preventing leakage, and increasing the viscosity of the electrolyte. The addition of NaCMC can also reduce the decomposition of the electrolyte and increase its thermal stability.
2. Ion conduction: NaCMC can improve the ion conduction of the electrolyte by forming a gel-like network that facilitates the transport of lithium ions between the electrodes. This results in improved battery performance and longer cycle life.
3. Battery safety: NaCMC can improve the safety of the battery by preventing the formation of dendrites, which are needle-like structures that can grow from the surface of the anode and penetrate the separator, leading to short-circuiting and thermal runaway. NaCMC can also improve the mechanical stability of the electrode and prevent its detachment from the current collector, reducing the risk of internal short circuits.
4. Electrode stability: NaCMC can improve the stability of the electrode by forming a uniform coating on its surface, which can prevent the dissolution of the active material and reduce the loss of capacity over time. NaCMC can also improve the adhesion of the electrode to the current collector, leading to improved conductivity and reduced resistance.

In conclusion, NaCMC is a promising additive for use in non-aqueous electrolyte secondary batteries due to its ability to improve battery performance and safety. Its unique properties, such as high water retention, excellent film-forming ability, and good stability, make it an effective additive for improving the stability and ion conduction of the electrolyte, preventing the formation of dendrites, improving the mechanical stability of the electrode, and reducing the loss of capacity over time. The use of NaCMC can lead to the development of safer and more efficient non-aqueous electrolyte secondary batteries, which can have a significant impact on the development of the electric vehicle industry and the energy storage sector.