On the Unsuspected Role of Multivalent Metal Ions on the Charge Storage of a Metal Oxide Electrode in Mild Aqueous Electrolytes

<p>The main objective of the work is to elucidate and rationalize the role played by an Al<sup>3+</sup>-based aqueous electrolyte on the charge accumulated in model mesoporous TiO<sub>2</sub> electrodes and to decipher the chemical nature of the inserting cation.<br></p>