Splitting a proton into multiple electrons is not possible within our current understanding of physics. Protons are fundamental particles and are considered stable in most contexts. They belong to a class of particles called baryons, which are made up of three quarks. Electrons, on the other hand, are elementary particles and have a negative charge.
In particle physics, there are various processes that involve the creation or annihilation of particles, but they typically involve other particles such as photons, neutrinos, or other fundamental particles. However, these processes still follow the conservation of charge, meaning that the total electric charge before and after the interaction remains the same.
So, in short, it is not currently feasible to split a proton into multiple electrons while conserving charge.