In recent years, the traditional TV has always been seen in square or round shapes. However, with the advancement of **3D printing technology**, scientists are now exploring new ways to make TVs more versatile and adaptable. They believe that future TVs could take on a variety of unique shapes, making them more suitable for integration into wearable devices and other innovative applications.
Recently, a research team from the Department of Energy Engineering at the Korea Advanced Institute of Science and Technology (UNIST) published a groundbreaking paper titled *"Printable Solid-State Lithium-Ion Batteries: Moving Toward a Variable with Aesthetics – Printable Solid-State Lithium-Ion Batteries: A New Route toward Shape-Conformable Power Sources with Aesthetic Versatility for Flexible Electronics"* in *Nano Letters*. The study was led by Se-Hee Kim, Keun-Ho Choi, Sung-Ju Cho, Sinho Choi, Soojin Park, and Sang-Young Lee. This research introduces a revolutionary concept: customizable, shape-adaptable batteries that can be printed onto various surfaces.
The researchers developed a new type of lithium-ion battery called PRISS, which can be continuously printed on objects with complex geometries, enabling the creation of intricate and functional power sources. According to the team, this technology surpasses conventional battery designs in flexibility and adaptability.
To develop this advanced battery, the scientists used a combination of materials including:
- SCE paste
- Bismuth electrode paste
- UV-curing acrylate polymer
- High boiling point electrolyte
They are also exploring more advanced manufacturing techniques to make these batteries easier and more cost-effective to produce. Professor Sang-Young Lee, the project leader, mentioned that the team is investigating technologies like inkjet printing and **3D printing**. These methods allow for the production of multi-dimensional and multi-scale structures, but they must meet specific rheological requirements to avoid damaging the battery components.
Recent progress in applying these technologies has opened up exciting possibilities for rechargeable power sources. The researchers have already demonstrated successful applications, paving the way for new fields of use that were previously unimaginable.
By leveraging 3D printing and the right materials, the team has eliminated many of the limitations that once restricted battery shapes. Traditional batteries require protective shells to prevent leakage and maintain separation between electrodes. With this new approach, those constraints no longer apply.
Even more impressive is the potential for combining the SCE paste with the electrode paste to create conductive mixtures that can be used for decorative designs—like letters or shapes. These batteries can power LEDs through connectors and retain up to 90% of their capacity after 30 charge cycles. Scientists are still working to improve efficiency further.
As Li explains, "All battery components—cathodes, anodes, and electrolytes—can be printed onto any object with complex geometry, allowing the battery to be seamlessly integrated into any shape."
As shown in the image above, the researchers used this technique to create a heart-shaped battery and even spelled out the word "PRISS." This innovation marks a significant step forward in the development of flexible, printable power sources that could revolutionize the future of electronics.
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