en.Wedoany.com Reported - A research team from Concordia University has published their latest findings in the Journal of Materials Chemistry A. By depositing a sparse coating of gold nanoparticles on the surface of battery electrodes, they have successfully suppressed dendrite growth in zinc batteries. Experimental data shows this technology extends battery cycle life to over 6000 hours, reducing dendrite growth speed by 50 times compared to untreated batteries.

Located in Montreal, Canada, Concordia University holds significant research influence in the fields of materials science and energy storage. This study utilized the ultra-bright X-ray technology of the Canadian Light Source (CLS) at the University of Saskatchewan to observe, for the first time, the interaction mechanism between trace gold nanoparticles and the battery surface. The core of this technology lies in using nanoparticles as localized control points to induce uniform deposition of zinc atoms, thereby blocking the formation of needle-like dendrites that cause short circuits at the source.

This coating technology only needs to cover less than 10% of the electrode surface, requiring minimal material usage. According to project researcher Ayse Turak, due to not requiring special laboratory conditions and using extremely small amounts of gold, its manufacturing cost is only 1/100th of that of conventional continuous gold coatings. This sparse arrangement not only reduces the consumption of expensive precious metals but also avoids complex manufacturing steps, possessing high potential for industrial scale-up.

Currently, the research team has begun testing the application of this technology in other energy systems, with a key focus on protecting copper electrodes in next-generation anode-free batteries. Furthermore, the team is evaluating the performance of this sparse nanoparticle coating in sensors, photovoltaic components, and lighting systems.

This research provides a low-cost pathway to address the short-circuit challenge in metal batteries. By minimizing the use of expensive materials to the extreme, this technology is expected to break through the lifespan bottleneck of zinc batteries in commercial energy storage applications. With the refinement of characterization techniques, this controlled deposition strategy will provide crucial technical support for improving surface interaction efficiency in various electronic technologies and is projected to enter the industrial validation stage within the next three years.

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