With the emergence of novel multifunctional internet of things and wearable electronic devices, the development of high performance energy storage devices is becoming increasingly important. Thin film solid state lithium batteries (TFBs) are known to be one of the most promising candidates to meet these applications’ demands.

In this context, it is expected that the development of thick (20µm+) electrodes with active material only would provide opportunities to enhance the device performance and widen the scope of possible integration schemes. Several options have been explored at LETI, including key enabling technologies such as electrochemical, hydrothermal, physical vapor deposition as well as a combination thereof. Here we will discuss our efforts to develop advanced TFB electrodes based on the thick active material electrodes.