Secondary Battery Electrode Composition for High-Load Cyclability

The patent changes the chemical composition parameters of the electrode active material layers by incorporating fluorine compounds and nitrogen compounds in specific weight ratios. The fluorine content to nitrogen content weight ratio in the positive electrode active material layer is controlled at 3-50, and in the negative electrode active material layer at 1-30. These parameter changes improve film stability and suppress decomposition reactions, thereby enhancing cyclability and reliability under high-load conditions.

The patent uses composite materials by combining fluorine compounds and nitrogen compounds within the electrode active material layers. This composite approach creates synergistic effects where the fluorine compound and nitrogen compound work together to stabilize the electrode films and suppress decomposition, improving both cyclability and high-load performance simultaneously.

The patent modifies the compositional parameters of the electrode active material layers by introducing fluorine compounds and nitrogen compounds with controlled weight ratios. This parameter optimization allows the battery to maintain high energy density while simultaneously improving film stability and resistance to decomposition reactions during charging and discharging cycles.

The patent converts the potential harm of high energy density design (which typically leads to unstable films and decomposition) into a benefit by using fluorine compounds and nitrogen compounds. These compounds transform the unstable high-energy state into a stable configuration that resists decomposition, allowing the battery to achieve both high energy density and improved stability.