Options
2021
Conference Paper
Titel
Techno-economic and environmental assessment of production processes for all-solid-state batteries using the example of active material coating by atomic layer deposition
Abstract
Current research on all-solid-state batteries intensively deals with various new material classes, innovative cell concepts and suitable production processes. However, there is a need for systematic evaluation and comparison of the corresponding technologies based on techno-economic and environmental assessments. Furthermore, as identified within the FestBatt cluster of competence and aligned with current research, there is a high demand for electrochemically and mechanically suitable coatings for cathode active materials [1]. One aspect of the EProFest project is the development and comparison of innovative coating processes. This includes the investigation and evaluation of promising coating materials, such as niobates and halides, and techniques, such as spray coating, physical vapour deposition and atomic layer deposition (ALD).The focus of this work is the exemplary investigation and evaluation of the ALD coating technique for nickel-manganese-cobalt active materials (NMC) using lithium containing phases and suitable oxides, as developed in EProFest. The main benefits of ALD include homogenous and uniform thin film deposition on complex-shaped geometries and high material efficiency compared to other techniques, such as high throughput spray coating. In order to further compare this process to other coating techniques, the energy consumption, material flows and product properties are further investigated, and the techno-economic and environmental impact assessed from a life cycle perspective. EProFest aims to support the development of promising process chains for all-solid-state batteries and materials by giving recommendations for action for comparable process steps. [1] Culver, Sean P.; Koerver, Raimund; Zeier, Wolfgang G.; Janek, Jürgen: On the Functionality of Coatings for Cathode Active Materials in Thiophosphate-Based All-Solid-State Batteries. In: Advanced Energy Materials 1 (2019), S. 1900626