Electrochemical cells and methods of manufacturing thereof

An electrochemical cell assembly comprising:

• an electrochemical cell comprising a negative electrode substrate;
• a first electrolyte reservoir fluidically coupled with the electrochemical cell, the first electrolyte reservoir comprising a first manufacturing electrolyte to electrochemically formulate active material on the negative electrode substrate, forming a negative electrode;
• a second electrolyte reservoir fluidically coupled with the electrochemical cell, the second electrolyte reservoir comprising a charge operation electrolyte to facilitate reduction at the negative electrode during charging of the electrochemical cell;
• and
• a third electrolyte reservoir fluidically coupled with the electrochemical cell, the third electrolyte reservoir comprising a discharge operation electrolyte to facilitate oxidation at the negative electrode during discharging of the electrochemical cell.