Thermal Energy Storage Material With 600 MJ/m³ Capacity

Monash University researchers discovered a trimodal energy storage material that improves thermal energy storage for renewable energy systems.

A unique thermal energy storage (TES) material has been developed by researchers at Monash University, Australia addressing critical challenges in renewable energy storage. The development showcases a material capable of storing thermal energy with unparalleled efficiency, potentially advancing global energy sustainability.

The innovation lies in the “trimodal” design, which combines three distinct mechanisms for storing energy. “This material represents a major leap forward in thermal energy storage,” said Dr Karolina Matuszek, lecturer, school of chemistry, Monash University. It offers a sustainable and scalable alternative to traditional storage methods, bringing the vision of a decarbonised future closer to reality.

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The material, a blend of boric and succinic acids, transitions at around 150°C and stores an impressive 600 MJ/m³—nearly double the capacity of existing TES materials. Its ability to harness sensible heat, latent heat, and a reversible chemical reaction ensures stability over 1000 heating and cooling cycles. Industries focused on renewable energy generation, energy storage solutions, and grid infrastructure could particularly benefit from this innovation, as it supports efficient scaling and cost-effective storage for large-scale operations.

One promising application for this discovery is in Carnot batteries, which convert electricity into thermal energy for storage and later re-convert it to electricity when needed. The novel material’s durability and high efficiency enhance Carnot battery performance, making renewable energy storage more reliable and accessible.

“The ability of this material to function so effectively in Carnot batteries could transform how we store renewable energy,” Dr Matuszek noted.

The environmental impact of this innovation is minimal. Both boric acid and succinic acid are inexpensive, sustainable, and widely available. Unlike lithium-based storage technologies, this material avoids reliance on rare metals, making it a greener alternative for diverse applications.

By making effective, scalable, and sustainable energy storage, this discovery positions itself as a game changing solution in the shift to renewable energy, appealing to industries and policymakers aiming to advance global decarbonisation goals.