Methods of forming electrochemical cells

A method of forming an electrochemical cell, the method comprising:

• providing an electrochemical cell comprising:
• a first electrode and a second electrode, wherein at least the first electrode is a silicon-dominant electrode;
• a separator between the first electrode and the second electrode;
• and
• an electrolyte;
• and
• providing a formation process comprising at least a charge step, the charge step comprising providing a formation charge current at greater than about 1 C to the electrochemical cell, wherein providing the formation charge current comprises charging to partial formation, wherein the charging to partial formation comprises charging to less than total capacity of the electrochemical cell, and wherein the charging to partial formation comprises applying a same maximum constant voltage used during full charge but for a shorter duration than a duration used for the full charge.