| dc.description.abstract | With the advancement of technology and population growth, the demand for energy is increasing steadily. However, the catastrophic effects of fossil fuels on the environment have led people to shift towards the use of green energy. Yet, many renewable energy sources are limited by various factors such as terrain and climate, resulting in their limited effectiveness and lack of portability. On the other hand, although lithium batteries cannot generate electricity, they can store energy in portable devices and have high conversion efficiency. They have gained significant attention in common devices like mobile phones, watches, and computers, as well as in emerging technologies such as electric vehicles and drones, where they serve as vital components. With technological advancements, the demand for higher energy density and power density in lithium batteries has increased, placing a great emphasis on their safety. As a result, researchers have proposed various methods to improve their performance while addressing safety issues. One of the most effective approaches is considered to be replacing traditional liquid electrolytes with solid-state electrolytes. However, solid-state electrolytes currently face two major challenges: high interfacial resistance and poor ion conductivity. The solutions proposed by researchers to overcome these challenges also encounter new obstacles. Among them, the addition of interface layers and co-sintering is currently the main research direction for interface improvement. This study focuses on interface enhancement and proposes solutions through several experiments. These experiments include the use of sintering aids to address the mismatch between the sintering temperature of the solid-state electrolyte and the positive electrode, making co-sintering a viable option. The evaluation and development of new electrolyte materials are also being explored with the aim of preparing a full cell using a single component to prevent electrode-electrolyte interdiffusion and the formation of high-impedance layers. Finally, efforts are being made to prepare and develop excellent acrylonitrile-based interface modifiers to suppress adverse reactions between the electrolyte and lithium metal. The studies above have shown promising results, providing valuable suggestions and experiences for the practical application of solid-state electrolytes in future lithium batteries. | en_US |