Lithium-containing coatings for cathode materials

A positive electrode comprising:

• a plurality of positive electroactive material particles defining an electroactive material layer;
• a first lithium-containing coating surrounding at least one positive electroactive material particle of the plurality of positive electroactive material particles, the at least one lithium-containing coating having a thickness greater than or equal to about 0.2 nanometers to less than or equal to about 5 nanometers and an ionic conductivity greater than or equal to about 10−7 S/cm to less than or equal to about 10−3 S/cm;
• and
• a second lithium-containing coating disposed on the electroactive material layer, the second lithium-containing coating consisting essentially of a single continuous layer coating, the second lithium-containing coating having a thickness greater than or equal to about 0.2 nanometers to less than or equal to about 5 nanometers and covering greater than or equal to about 30% to less than or equal to about 50% of a total exposed surface area of the electroactive material layer.

A positive electrode comprising:

• a plurality of positive electroactive material particles defining an electroactive material layer;
• at least one first lithium-containing coating surrounding at least one positive electroactive material particle of the plurality of positive electroactive material particles, the at least one first lithium-containing coating covering greater than or equal to about 95% to less than or equal to about 100% of a total exposed surface area of the at least one positive electroactive material particle;
• and
• a second lithium-containing coating disposed on one or more surfaces of the electroactive material layer, the second lithium-containing coating consisting essentially of a single continuous layer coating, the second lithium-containing coating covering greater than or equal to about 30% to less than or equal to about 50% of a total exposed surface area of the electroactive material layer,
• the at least one first lithium-containing coating and the second lithium-containing coating each comprising a lithium-containing material independently selected from the group consisting of:
• lithium phosphates, lithium alumina, lithium niobates, lithium silicates, lithium alumina fluoride, lithium fluoride, lithium phosphorus oxynitride (LiPON), and combinations thereof.