Skoltech developed high-power potassium batteries, charged in 10 seconds

Scientists have developed potassium batteries based on organic materials that have record indicators of stability, capacity, power, and are able to fully charge / discharged in seconds.

Currently, lithium-ion batteries received widespread. However, due to the rapid development of electrical engineering and electric transport, as well as limited Li reserves and transition metals, in the next 10 years there will be a serious problem of raw material deficiency for their production. Therefore, scientists of the whole world are searching for effective alternatives from more common elements such as potassium,

Successors in this direction were achieved by researchers from Skolteha, who, together with colleagues from the Institute for the Problems of Chemical Physics of the Russian Academy of Sciences and the Urals Federal University, developed super-fast potassium batteries based on organic polymers with high capacity.

To do this, they used an anode from the low-melting potassium-sodium alloy (melting point -12.7 ˚C) applied to carbon paper, and high-voltage organic cathodes from redox-active polymers. The resulting battery samples can be fully charged / discharge in less than 10 seconds.

In this case, one of the polymer cathodes showed a record energy intensity, and the second is stability: the loss of the container was only 11% after 10 thousand working cycles. Batteries based on both materials also demonstrated high power rates, up to 100 kW / kg, which corresponds to the level of supercapacitors.

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