This article is describing the evolution of modern electromobilitywith describing the problematics connected with the shape of cells in battery modules. There are mentioned Li-ion battery's anode materials with their basic parameters and one of the conversion materials, silicon, which looks like promising material for future enhancing anode capacity. Usage of this material brings some new challenges, which prevents use in practice and must be solved. One of these solutions can be by applying external pressure, which can, for example, improve internal conductivity