Disclosed are a precursor for a rechargeable lithium battery, a positive active material including the same, a preparation method thereof, and a rechargeable lithium battery including the positive active material. More particularly, the present invention r...

The present invention provides a positive active material for a secondary lithium battery, a method of preparing the positive active material, and a secondary lithium battery including the positive active material, wherein the positive active material incl...

Disclosed are a precursor of a positive active material for a rechargeable lithium battery and a preparation method thereof, and a positive active material and a rechargeable lithium battery including the same, and specifically a precursor for a rechargeab...

A wireless multi charging method and system are disclosed. The wireless charging method selects a portion of mobile devices (210, 220, 230) located in a charging region (A) as a group, and provides energy for wireless charging to the selected group of mobi...