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New Stretchable Battery Can Safely Store Power for Wearables

This stretchable battery can safely power wearables

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Battery
Researchers have developed a soft and stretchable battery for wearable electronics that relies on a special type of plastic. (Representational Image). Pixabay

Researchers from Stanford University have developed a soft and stretchable battery for wearable electronics that relies on a special type of plastic to store power more safely than flammable material used in the conventional batteries today.

The adoption of wearable electronics has so far been limited by their need to derive power from bulky, rigid batteries that reduce comfort and may present safety hazards due to chemical leakage or combustion.

“Until now, we haven’t had a power source that could stretch and bend the way our bodies do, so that we can design electronics that people can comfortably wear,” said chemical engineer Zhenan Bao, who teamed up with materials scientist Yi Cui to develop the device.

Battery
The prototype is thumbnail-sized and stores roughly half as much energy, ounce for ounce, as a comparably sized conventional battery. (Representational Image). Pixabay

For some time, lithium ion batteries have used polymers as electrolytes — the energy source that transports negative ions to the battery’s positive pole.

However, those polymer electrolytes have been flowable gels that could, in some cases, leak or burst into flame.

To avoid such risks, the Stanford researchers developed a polymer that is solid and stretchable rather than gooey and potentially leaky, and yet still carries an electric charge between the battery’s poles.

In lab tests, the experimental battery maintained a constant power output even when squeezed, folded and stretched to nearly twice its original length.

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The prototype is thumbnail-sized and stores roughly half as much energy, ounce for ounce, as a comparably sized conventional battery.

“One potential application for such a device would be to power stretchable sensors designed to stick to the skin to monitor heart rate and other vital signs,” the researchers noted in the journal ature Communications. (IANS)

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Samsung Unveils Galaxy M31 Smartphone in India

Samsung launches Galaxy M31 in India starting from Rs. 15,999

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Samsung Galaxy M31
Samsung on Tuesday launched its new smartphone Galaxy M31 in India starting from Rs 15,999. Wikimedia Commons

Samsung on Tuesday launched its new smartphone Galaxy M31 in India starting from Rs 15,999. This is the latest science and technology news.

Galaxy M31 is the newest addition to the popular Galaxy M series. Till date, the company has launched six models – Galaxy M10, M20, M30, M40, M10s and M30s – under the M series in 2019.

“We now bring Galaxy M31 keeping in mind the needs and aspirations of our young millennial consumers,” Asim Warsi, Senior Vice President, Mobile Business, Samsung India said in a statement.

Samsung Galaxy M31
Samsung on Tuesday launched its new smartphone Galaxy M31 in India starting from Rs 15,999. (Representational Image). Pixabay

The smartphone will come in two memory variants, 6/64GB priced at Rs 15,999 as well as 6/128GB for Rs 16,999 and will be available at Amazon.in, Samsung.com along with select retail stores from March 5, 12 noon.

The phone is equipped with 6.4-inch super AMOLED display and features quad-camera setup — 64MP Main Lens, 8MP Ultra-Wide Lens, 5MP Macro Lens and 5MP depth lens. There is also a 32MP front camera.

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The device is powered with the Exynos 9611 upto 2.3GHz Octa Core processor and will run on Android 10 out of the box with Samsung’s new One UI 2.0.

Additionally, the phone houses a 6000mAh battery with an in-box Type C 15W fast charger. (IANS)