What type of cell produces electricity through chemical action?

The correct choice is the storage battery cell, as this type of cell generates electricity through chemical reactions. In a storage battery, which often consists of multiple electrochemical cells, chemical substances react within the cell to produce a flow of electrons, leading to electric current. This process is reversible, meaning that when electricity is applied, the chemical reactions can be reversed, allowing the battery to recharge.

While thermocouples, photovoltaic cells, and piezoelectric cells all convert energy into electricity, they do so through different methods. Thermocouples generate electricity from temperature differences, photovoltaic cells convert sunlight (solar energy) into electricity, and piezoelectric cells produce voltage when mechanical stress is applied. These distinctions in the principles of operation clarify why the storage battery cell is the correct answer, as it relies solely on chemical action for electricity generation.