Disclosed are a method for controlling heating of an HVAC system for an electric vehicle and an HVAC system thereof. According to various embodiments, in an operation of the HVAC system including a main heating unit in which a first refrigerant circulates ...

In a method for recovering an active metal of a lithium secondary battery, a sulfuric acid solution is added to a lithium metal composite oxide so as to prepare a sulfated active material solution. A transition metal is extracted from the sulfated active m...

Embodiments of the present disclosure relate to an ion conductive polymer including a repeating unit of formula 1. wherein in Formula 1, A is quaternary ammonium, B is an anion, a is an integer of 1 to 3, Ris an organic group having 1 to 10 carbon atoms, R...