Macroscopic heat release in a molecular solar thermal energy storage system
Journal article, 2019

The development of solar energy can potentially meet the growing requirements for a global energy system beyond fossil fuels, but necessitates new scalable technologies for solar energy storage. One approach is the development of energy storage systems based on molecular photoswitches, so-called molecular solar thermal energy storage (MOST). Here we present a novel norbornadiene derivative for this purpose, with a good solar spectral match, high robustness and an energy density of 0.4 MJ kg-1. By the use of heterogeneous catalyst cobalt phthalocyanine on a carbon support, we demonstrate a record high macroscopic heat release in a flow system using a fixed bed catalytic reactor, leading to a temperature increase of up to 63.4 °C (83.2 °C measured temperature). Successful outdoor testing shows proof of concept and illustrates that future implementation is feasible. The mechanism of the catalytic back reaction is modelled using density functional theory (DFT) calculations rationalizing the experimental observations.

Author

[Person 5cb9e843-ef06-4987-8c94-dfe263bbac56 not found]

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry, Kasper Moth-Poulsen Group

[Person 50718a8a-75eb-4517-87dd-644e973ac12b not found]

Chalmers, Chemistry and Chemical Engineering

[Person 88b8b4b5-a0d2-4c00-9a96-ad358695b4ed not found]

University of La Rioja

[Person 08b9685c-96b5-4d2a-aacf-4509fbb90f35 not found]

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry, Polymer Technology

[Person a3d32bc9-8755-4da5-864f-d94579f12917 not found]

Chalmers, Chemistry and Chemical Engineering

[Person aa89144a-f5ef-444f-82b7-4c450b0a26a3 not found]

Chalmers, Chemistry and Chemical Engineering

[Person 31d9f3c3-ba95-4f01-acd2-c3dabf220521 not found]

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry, Kasper Moth-Poulsen Group

[Person db5802cb-96ed-438f-80f2-3cb8ec94e2eb not found]

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry, Kasper Moth-Poulsen Group

[Person 5cc70132-71e0-421e-9f75-220417555dfa not found]

Chalmers, Chemistry and Chemical Engineering

[Person 80dbeb4a-6630-404e-b6ee-6503c308d599 not found]

University of La Rioja

[Person 1150b587-3e1d-40fa-927d-bcbf6d80eebf not found]

University of Gothenburg

[Person 87916476-7e9c-4ccb-b633-d0dcc23db57a not found]

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry, Kasper Moth-Poulsen Group

Energy and Environmental Sciences

1754-5692 (ISSN)

Vol. 12 1 187-193

Subject Categories

Energy Engineering

Chemical Process Engineering

Energy Systems

DOI

10.1039/c8ee01011k

More information

Latest update

7/17/2019