The researchers were able to solve the problem of the emergence of dendrites in potassium batteries, which are a cheaper alternative to lithium-ion technologies.
The dependence of humanity from energy accumulation devices is continuously growing, but due to the limited and high lithium cost, the demand for more accessible and safe solutions increases. One of these alternative options are potassium batteries that can compete with modern lithium-ion.
However, like all metal batteries, they suffer from dendrites (processes on the anode), which are formed during the charging / discharge process, and ultimately can trigger a short circuit and fire.
A group of scientists from the Polytechnic Institute of Rensaser from the University of Maryland has found a solution to this problem by controlling the internal temperature and smoothing the generated dendrites.
The bottom line is that, whenever the battery is not used, the built-in control system begins to heat it. At the same time, the temperature does not smell the metal, but rises high enough to activate the self-assets of the process due to the activation of the surface diffusion of potassium atoms, forcing them to move in the side direction.
This method is applicable to lithium-metal batteries, but the researchers have found that Kaliyev is needed much less heat to complete the process of self-healing.
Recall that in November Skoltech also
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