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Institute of Energy and Climate Research

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Wet chemical methods

Wet chemical coating methods are based on emulsions, sols or solutions which are coated on substrates in different ways. Subsequent heat treatment leads to dense layers. In battery research, wet chemical coating methods are used to produce layers of electrode and electrolyte materials. Defect-free layers can be obtained, if the coating is carried out in a clean room atmosphere.

Wet chemical methodsScientist working in the clean room

Spin- and dip coating

For spin- and dip coating methods, sols are used which are applied uniformly to a substrate either by rotation (spin coating) or by vertical immersion (dip coating). By means of multiple coatings, layer thicknesses in the micrometer range can be achieved.

Spin- and dip coating50 nanometer thin layer on steel substrate produced by wet-chemical process

Ink-jet printing

In ink-jet printing microemulsions based on organometallic precursor are used and applied to a substrate by means of a print head. The subsequent heat treatment produces dense layers, for example solid electrolyte layers.