The demand for electrochemical energy storage systems - both for stationary and mobile applications - has recently increased significantly. In their development, sustainability and maintainability are not yet in focus, but have recently become increasingly important. Taking these factors into account will determine the long-term success of battery systems. Stationary energy storage systems are already being used in developing and emerging countries to improve the supply infrastructure. One of the key challenges here is the repair of the systems in the event that a module or cell replacement is necessary. Due to the use of material contact between different system components, this process is made more difficult, which can lead to various problems under unfavorable conditions. This thesis therefore deals with the analysis, evaluation and design of different contacting methods and how they can be integrated into modern battery systems. Lifetime, safety aspects and performance should be improved compared to the state of the art. Based on the literature research, the thesis presents a number of approaches to avoid material-locked contacts as well as an evaluation approach for the evaluation. The focus is on the use of novel materials and manufacturing processes. In addition, the impact of avoiding material-to-material contact on the overall performance and safety of sustainable designed battery systems is investigated. Finally, general design guidelines are written that consider maintainability by simple means in the future design of battery systems.