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Water battery for electric vehicles

14.01.2023

Electric vehicles flooded with salt water during hurricanes and other natural disasters are at risk of fire because they can corrode the battery and cause a short circuit. But scientists at the University of Central Florida have developed technology that can prevent electric vehicles from catching fire and cut battery charging time to three minutes.

Currently, electric cars are predominantly equipped with lithium-ion batteries with an organic electrolyte in their composition. However, such electrolytes are too volatile and can easily flare up due to overcharging, overheating, and water corroding the battery case.

Scientists have created a so-called "water" battery - replacing the organic electrolyte with salt water to create a safer and more efficient battery.

This is not the first attempt at using salt water as an electrolyte, but previous concepts have suffered from low energy output, slow charge times, poor stability and corrosion. The Californians have improved the technology by using naturally occurring metal ions found in salt water, such as sodium, potassium, calcium and magnesium, to create a double cation battery that holds more energy. This allowed them to cope with the slowness of previous water-based battery designs. In addition, scientists managed to achieve the main thing - the ability to charge such a battery almost at lightning speed (in 3 minutes).

Researchers have developed a XNUMXD zinc-copper anode containing a thin zinc oxide protective layer on top to solve problems with instability, dendrite growth and corrosion. The new XNUMXD nanostructured surface of the copper-zinc alloy allows researchers to precisely control electrochemical reactions, thus improving battery stability and fast charging capability.

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Specifications of glasses-computer Glass 17.04.2013

17.04.2013
Google has published specifications for the wearable computer in the shape of Glass glasses on its website at the same time that it has completed production of the first pilot batch of the futuristic device intended for developers.

One of the main highlights of Glass - the screen fixed in front of the user's right eye - has a resolution of 640 x 360 pixels, which according to Google is equivalent to a 25-inch high-definition display, located at a distance of about 2,5 meters. The screen resolution is not listed in the device specification itself, but it is mentioned in the application developer documentation that Google also published on Tuesday night.

The built-in 5-megapixel camera allows you to record high-definition video at 720p resolution. To store data and applications, the user will have access to 12 GB of memory out of 16 GB available in the device. The battery should last for a day under normal use, however, as the company notes, some functions (such as video recording) will drain the battery faster.

The device is equipped with Wi-Fi and Bluetooth wireless modules, with the help of the latest Glass it can be paired with a smartphone. On Monday, Google released the MyGlass app for Android devices, designed to set up and manage computer glasses. Through a connected smartphone, the Glass functionality can be extended with GPS geolocation and SMS messaging.

Along with the disclosure of specifications and the publication of technical documentation, Google announced the end of production of the first batch of Glass, according to TechCrunch.com, citing a letter from the company to developers who participate in the Glass Explorer program. Google announced the start of deliveries of the first copies of Google Glass (Google Glass Explorer Edition) to application developers. The cost of the device is 1,5 thousand dollars. The winners of the competition for the best idea of using glasses, which was held in the United States, will also be the first to receive it.

"We've been hard at work on the Glass Explorer Edition and are pleased to announce that the device and its software are ready for you. The first few devices are rolling off the assembly line right now," Google said in a statement.

The company did not specify the date for Google Glass to enter the commercial market. Google co-founder Sergey Brin, who runs the company's special projects, hopes to bring the product to the masses in 2014.

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