Project: Research direct

Project Details


A fully sustainable energy supply can be accomplished by the transition to renewable energy over longer periods of time (months, seasons) and at the same time by meeting (part of) the peak heat demand. Since approximately 40% of the energy consumption occurs within the built environment, a completely energy-neutral transition in the Netherland is the target for 2050.

Within the TKI UE Multi-Year Program Compact Conversion and Storage a roadmap has been developed in the period 2015-2017 which should make it possible to compact heat storage, to be developed with the objective of a storage capacity of 1 GJ/m3 at an acceptable cost. A REDOX heat system can easily deliver heat at temperature levels of 90°C and higher and can therefore be used for all types of heating systems commonly used in the built environment. The technology needs therefore not only to be compact but also offer a great solution for pre-war construction, monumental buildings and various utility buildings. The REDOX-heat technology converts electricity from the electricity grid (or from local PV) into hydrogen, which is then immediately used to reduce a metal oxide. There is therefore no significant presence (or storage) of hydrogen in the system. A REDOX heat reactor/system will typically be used (discharged) when there is a (potential) shortage of electricity in the electricity grid and when there is an urgent heat demand. The oxidation of the metal takes place by exposure to (hot) air.

The aim of this project is to conduct a study for reactor concepts without electrolyser including exploratory experiments related to the feasibility of those concepts. Electrolysis is a mature, CO2-free, and industrially applied process proposed to produce iron from the rust. The electric current is used to reduce metal oxide in an aqueous solution so that the desired metal grows on the electrode, known as the Electrodeposition process. Here, a rotating cathode is considered to enhance mass transfer and convection. The outcome of the project is to report the potential of the technological and energy efficiency for build environment. The feasibility of the rotating electrochemical reactor is analyzed in terms of the final reduced iron powder, safety and low costs for small and larger utilities.

People involved with TU/e:
Prof. Herbert Zondag (TU/e and TNO)
Dr. Giulia Finotello (TU/e), contact person for the project
Akmal Irfan Majid: PHD candidate (TUE)

Layman's description

Effective start/end date1/01/2030/06/21