What is the energy source of the intracellular electric field and what is the molecular mechanism that leads to the excitation of intracellular electric field?

"What is the energy source of the intracellular electric field and what is the molecular mechanism that leads to the excitation of intracellular electric field? ATP is the most common cellular energy source. To transform the chemical energy in ATP into electric magnetic field within the living cell, cell needs to have a molecular dynamo to transform the mechanistic movement of protein complexes to directional movements of intracellular electrons, leading to the electric excitation of the spindle body microtubules as well as the M phase chromosomes, which is essential for mitosis [9]. "
-Yue Zhao, Centrosome Functions as a Molecular Dynamo in the Living Cell, 2015