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Korean Scientists Develop New Water-based Batteries That Are Fully Charged In Half A Minute

- Sep 20, 2018 -

The research team from South Korea has developed a new hybrid energy storage battery. Although the water-based electrolyte replaces the traditional flammable organic solvent, the power density is increased by a hundred times, and it is safer and more stable than the lithium-ion battery. It can be as short as 20 seconds. The internal boost is fully charged.


The concept of using water-based electrolytes for battery safety is not new, but this design is less flammable than lithium batteries, and it is much cheaper, but it also brings problems such as shortened life and low power consumption for consumer electronics. It is like a pig teammate.

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However, research teams from the Korea Institute of Science and Technology (KAIST) and Gangwon University in Korea have developed breakthrough equipment. According to "Interesting Engineering", this is the first time scientists have solved the charging speed and high temperature of water-capacitor equipment for the first time. In addition to the energy density limit, this device can achieve high performance while achieving performance goals.


Basically, the team designed a new cathode-anode structure from a range of different materials. The anode is made of a network of graphene polymers with a high surface area to store more energy, and the cathode is embedded in graphene. The composition of nickel oxide nanoparticles is low, and the energy loss between the two electrodes is minimized. After more than 100,000 redox cycles, the capacitance is still maintained at about 100%.


The power density of the new device is 100 times higher than that of a similar water-based battery design, and a low-power system such as a conventional USB charger can charge power from zero to full in 20 to 30 seconds.


Compared with lithium batteries, water-based batteries are more environmentally friendly and easy to manufacture. If they are combined with high capacitance and high stability, and can be quickly charged, the road to commercialization will be smoother.

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