An assessment of pyrite thin-film cathode characteristics for thermal batteries by the doctor blade coating method

Using FeS2 (pyrite) as an active material for cathodes in thermal batteries has garnered significant attention due to its abundance, low cost, and high efficiency. However, the high internal resistance of FeS2 cathodes poses a challenge that reduces the electrochemical efficiency of typical Li-Si/FeS2 thermal batteries. This study investigates the effects of binder types on the performance of pyrite thin-film cathodes prepared using the doctor blade coating method. By examining various factors influencing the electrochemical characteristics of the cathodes, we aim to optimize their performance. The results indicate that the choice of binder plays a critical role in minimizing internal resistance and enhancing electrochemical efficiency. The study also provides insights into the material properties affecting the cathode performance under thermal battery conditions. These findings will assist in the development of more efficient thermal batteries utilizing FeS2, potentially leading to broader applications in energy storage technologies.