Influence of Atmospheric Composition on the Performance of Prelithiated C/SiOx Anodes – from Lab to Mass Production
Silicon is a promising candidate as a high capacity anode active material and is already used in small quantities in state of the art products. One of the main hindrances for increasing the share of silicon within the anode is the high irreversible lithium loss that is characteristic for most silicon materials. Prelithiation offers a […]
Comparison of a discontinuous and continuous slurry manufacturing process for silicon-containing anodes in lithium-ion batteries
Intensive efforts have been made to improve the energy density of lithium-ion batteries. Particularly, it has been proven to be advantageous to use active materials containing silicon due to their high capacity. For this reason, the processing of active materials containing silicon is becoming increasingly popular. Additionally, the production of battery slurries in a continuous […]
The influence of the binder amount on the Solid Electrolyte Interphase
The Solid Electrolyte Interphase (SEI) is of utmost importance to not only the performance but also to the safety and lifetime of the lithium ion battery (LIB). Electrolyte components react at the negative electrode surface during the first charge/discharge cycles and form a thin (3 10 nm) layer of decomposition products.] This layer, the SEI, […]
Selecting the right cell for the job: effective cell testing and qualification for real world applications
As lithium-ion batteries have become more reliable, smaller, lighter, and cheaper, they have been incorporated in many contemporary technologies and products. As a result, there has been a dramatic increase in the number of batteries manufactured today, creating seemingly endless choices when original equipment manufacturers (OEMs) select a battery for any given device. While battery […]
Laser cutting of prelithiated graphite-silicon anodes
Prelithiation of electrodes is a new process step to avoid the nearly 20% lithium loss during the SEI formation. A thin lithium layer is applied to the electrode surface as a top coating via a physical vapor deposition process. This sacrificial lithium layer is designed to reduce the lithium loss during the first formation cycle […]
Recent development on materials, components, and processes for thiophosphate-based all-solid-state-batteries
All-solid-state lithium-ion batteries are promising candidates to overcome safety and energy limitations of common lithium-ion batteries. Although excellent results have been reported for sulfide based electrolytes on a small scale, classical slurry-based lithium-ion processing fails to reproduce the same performance in a larger cell. In this lecture, scalable concepts for material and component development are […]
Scaling up the production of silicon-based multi-layer pouch-cells to enhance the energy density of LIBs
In order to meet consumer demands for lithium-ion battery (LIB) performance, innovative materials are being studied to increase the energy density of the cell. One material in particular is silicon, which exhibits a roughly five times larger theoretical energy density than the state-of-the-art graphite currently used as anode active material. Several studies have been per-formed […]
Energy efficient cluster approach for dry room operation in lithium-ion battery production
As a matter of fact, the operation of low dew point dry rooms is essential for the clean and safe production of lithi-um-ion battery cells. However, the high demand in electrici-ty, natural gas and further supplies is a barrier on the path to sustainable energy storage solution. As Vogt et al simulated in their work, […]
Aqueous batteries beyond lithium employing concentrated halide-free electrolytes
Aqueous batteries beyond lithium employing concentrated halide-free electrolytes Jin Han1,2, Alessandro Mariani1,2, Maider Zarrabeitia1,2, Alberto Varzi1,2*, Stefano Passerini1,2* 1 Helmholtz Institute Ulm (HIU), Helmholtzstrasse 11, D-89081 Ulm, Germany 2 Karlsruhe Institute of Technology (KIT), P.O. Box 3640, D-76021 Karlsruhe, Germany 1 Background Despite the great success achieved by non-aqueous lithium-ion batteries (LIBs) owing to the […]
Aqueous batteries beyond lithium employing concentrated halide-free electrolytes
Aqueous batteries beyond lithium employing concentrated halide-free electrolytes Jin Han1,2, Alessandro Mariani1,2, Maider Zarrabeitia1,2, Alberto Varzi1,2*, Stefano Passerini1,2* 1 Helmholtz Institute Ulm (HIU), Helmholtzstrasse 11, D-89081 Ulm, Germany 2 Karlsruhe Institute of Technology (KIT), P.O. Box 3640, D-76021 Karlsruhe, Germany 1 Background Despite the great success achieved by non-aqueous lithium-ion batteries (LIBs) owing to the […]