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Technological innovations in the field of batteries are constantly evolving, promising ever more efficient and lasting solutions. Among these advances, a new dry electrodes technology for zinc-iodine batteries, developed by the University of Adelaide, could transform our way of storing energy on a large scale. By integrating active materials in the form of dry powders, this innovation not only promises to improve battery performance, but also to ensure a longer lifespan and increased safety.
A major advance in energy storage
Researchers at the University of Adelaide developed a dry electrode for aqueous batteries, making it possible to double the performance of cathodes compared to traditional lithium-ion batteries. This innovative technique avoids the conventional wet mix of iodineusing active materials in the form of dry powders. These materials are then rolled up in thick and self -supporting electrodes.
In addition, a subtle addition of 1.3.5-Trioxane to electrolyte turns into a flexible protective film on the surface of zinc during load. This film prevents the formation of dendritesneedle structures that can cause short circuits. These technical advances make it possible to significantly improve the safety and sustainability of the batteriesopening the way to broader adoption in energy storage.
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A safer and durable alternative to lithium-ion batteries
Zinc-iode batteries offer considerable advantages in terms of safety, sustainability and costs for network storage on a network scale. However, their performance has often been lower than that of lithium-ion batteries. Thanks to this new technique for preparing electrodes, the researchers have reached a record load of 100 mg of active material per cm².
After loading the cells made with these new electrodes, they kept 88.6 % of their capacity after 750 cycles, while the button cells maintained almost 99.8 % of their capacity after 500 cycles. These promising results demonstrate the potential of this technology to compete with existing solutionsby offering a safer and more sustainable alternative.
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Real potential for network scale storage
With a high load in iodine and a reinforced zinc interface, each battery can store much more energy at a reduced weight and cost. This advance could bring zinc-ole batteries closer to practical use in large-scale or network storage applications.
The advantages of this invention are numerous compared to existing battery technologies:
| Advantage | Description |
|---|---|
| Higher capacity | Dry electrodes contain more active material than those made by damp treatment. |
| Self-discharge and reduced shuttle loss | The dense structure of dry electrodes prevents iodine from escaping in electrolyte. |
| Increased zinc stability | A protective film is formed during the operation, preventing the growth of dendrites. |
The new technology will benefit energy storage suppliers – especially for the integration of renewable energies and network balancing – which will benefit from safer and more sustainable batteries.
Towards a large -scale production
The development of this technology does not stop there. The team plans to expand its capacities, with plans for large -scale production of electrodes using the manufacturing in roller roller. By optimizing lighter current collectors and reducing excess electrolytethe energy density of the system could be doubled, going from 45 WH/kg to around 90 Wh/kg. This opens up exciting prospects for the adoption of these batteries in various industriessuch as public services and micro-rings.
While we continue to explore the possibilities offered by this innovation, the question arises: how will this technology influence the future of energy storage, and what new opportunities will emerge for industries seeking to adopt more sustainable and effective storage solutions?
The author relied on artificial intelligence to enrich this article.
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