Fraunhofer Institute for Material and Beam Technology IWSService offers
TEM image CVD-carbon-coated battery active material
SEM image LTO/CNT nanocomposite
TEM image porous carbon material
New carbon materials are being developed at the IWS. The range of services for applications in battery electrodes includes in particular:
Carbon thin films
Thin carbon films are deposited on powders and flat substrates by means of liquid and gas phase processes and enable:
- reduction of interfacial resistances between active material and metallic current collector
- electrically and ionically conductive encapsulation of active materials
Carbon nanomaterials
Carbon nanotubes (CNTs) are unique conductive additives due to their structure and are produced, functionalized and processed at the IWS. Examples are:
- vertically aligned CNTs as 3d-current collector
- highly conductive composites made of CNTs and active materials
- CNTs as additives in highly efficient electrodes
Porous carbons and carbon/Si composites
Carbon and carbon/Si composites with tailored porosity are fabricated by an innovative template process for battery applications.
- cost-efficient basic materials
- carbonization and template removal in one process step
- high surfaces up to 3000 m2/g
- defined meso- and macropores between 5 und 150 nm