Graphene-coated Aluminum for Lightweight Heat Exchangers in Electronics

Purpose and goal:

In this project we will increase the technology readiness level (TRL) of our previously-validated lightweight solution based on graphene-coated aluminum for electronics cooling. We will develop a sustainable process to fabricate thick graphene coating on thinned 3D aluminum substrates (louvered fins), assemble them into heat exchangers, and validate their thermal performance in relevant environment, so as to increase the TRL to 5.

Expected results and effects:

The graphene-coated louvered fins are expected to be >20% lighter than the conventional pure aluminum fins but with comparable thermal performance. They will enable “generic” lightweight solutions for thermal management devices and components in a variety of industrial applications, such as electronic cooling and automotive, to meet the demand for saving energy and resources.

Approach and implementation:

This project will be conducted through the collaboration between the three partners. Aninkco AB will formulate compatible graphene inks for 3D coating and develop recycling process for the graphene coatings. KTH will use the inks to develop/advance the supersonic spraying and electroplating processes to fabricate thick, conformal and highly conductive graphene coatings on 3D aluminum louvered fins.

Huawei Technologies Sweden AB will assemble the louvered fins into heat exchangers and characterize the thermal performance.