New water batteries from Korea are charged in just 30 seconds

<pre>New water batteries from Korea are charged in just 30 seconds

The Korea Institute of Advanced Science and Technology (KAIST) has created a new design of water-based batteries, which exceeds the predecessors by hundreds of times across the entire range of benchmarks. And this is an occasion to remind once again that the dominance of lithium-ion batteries in our lives is not permanent, and something new must come to replace them. For example, water batteries – in principle they can not ignite or explode.

Korean engineers have managed to design an extremely efficient anode and cathode design that operate in an environment of electrolyte on a water basis. They created two plates of a combination of polymer with graphene, which have a huge number of micropores and, as a consequence, a colossal surface area. In the anode, the pores are empty, in the cathode they are initially filled with particles of nickel oxide several nanometers in size.

Due to this, the power density of the battery has increased a hundredfold, the rate of reaction and recharging is now measured in tens of seconds, and the wear after 100000 cycles of recharging was a few percent. However, the capacity of the prototype is extremely small and so far it can only work with low-power systems. For example, collect energy from a photovoltaic plate illuminated with a flashlight, and activate a conventional LED.

High speed recharge, phenomenal battery reliability and its convenience when using compact energy sources. Three key advantages that should help commercialize the development and create on its basis water-based batteries for portable electronic devices. Plus, this technology is environmentally safe and cheap in implementation, but still looks exotic in the eyes of big business.

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