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New Manufacturing Method Makes Microbatteries More Efficient

Energy storage is a big problem for small electronic devices. Researchers at Aalto University in Finland have demonstrated a new manufacturing method that could help make microbatteries more efficient. Their new fabrication method produces lithium terephthalate, an emerging material that has great potential for anodes in lithium-ion batteries.

In a research paper published in Nano Letters, the Aalto team described how they fabricated the material.  They used a technique called atomic/molecular layer deposition (ALD/MLD) to make organic lithium electrode thin films. With this method, the materials can be made into 3D microstructured architectures, which make the batteries more efficient by exposing a larger surface area of the material. The battery the researchers developed retained 97 percent capacity after 200 charge/discharge cycles. Now that there is an effective way to produce lithium terephthalate, it can be used to make batteries that store large amounts of energy in very small packages.

Source: Aalto University | Photos by Photo Mikko Raskinen / Aalto University

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