Abstract: The present invention relates to a method for regenerating an electrolyte liquid of a flow battery, and a device for regenerating an electrolyte liquid of a flow battery. The method involves operating a flow battery, stopping the operation of the flow battery, mixing the anode electrolyte liquid and the cathode electrolyte liquid of the flow battery, electrically oxidizing or reducing the mixed electrolyte liquid and dividing the oxidized or reduced electrolyte liquid into each of a cathode electrolyte liquid storage unit and a anode electrolyte liquid storage unit. The device includes a flow battery and a flow battery for regeneration.

Abstract: The present specification relates to a polymer electrolyte membrane, an electrochemical battery including the polymer electrolyte membrane, an electrochemical battery module including the electrochemical battery, a flow battery including the polymer electrolyte membrane, a method for manufacturing a polymer electrolyte membrane, and an electrolyte solution for a flow battery.

Abstract: The present specification relates to an ion exchange membrane, an electrochemical cell, a flow battery and a fuel cell comprising the same, and a method for manufacturing the same.

Abstract: Disclosed herein is a high voltage cathode active material and a method for preparing the same. The cathode active material includes particles of a spinel-type compound having a composition represented by Formula (1) and a carbon-based material present on surfaces of the particles of the spinel-type compound: Li1+aMxMn2?xO4?zAz??(1) where ?0.1?a?0.1, 0.3?x?0.8 and 0?z?0.1.

Abstract: The present specification relates to an ion exchange membrane, an electrochemical cell, a flow battery and a fuel cell comprising the same, and a method for manufacturing the same.

Abstract: The present specification relates to a composite membrane containing an ion transfer polymer and a method for preparing the same.

Abstract: The present invention relates to a method for regenerating an electrolyte liquid of a flow battery, and a device for regenerating an electrolyte liquid of a flow battery. The method involves operating a flow battery, stopping the operation of the flow battery, mixing the anode electrolyte liquid and the cathode electrolyte liquid of the flow battery, electrically oxidizing or reducing the mixed electrolyte liquid and dividing the oxidized or reduced electrolyte liquid into each of a cathode electrolyte liquid storage unit and a anode electrolyte liquid storage unit. The device includes a flow battery and a flow battery for regeneration.

Abstract: Disclosed are a cathode active material including a lithium transition metal oxide based on at least one transition metal selected from the group consisting of Ni, Mn and Co, wherein at least one hetero element selected from the group consisting of Ti, Co, Al, Cu, Fe, Mg, B, Cr, Bi, Zn and Zr is located at a surface portion of or inside the lithium transition metal oxide, and a secondary battery including the same. The cathode active material according to the present invention includes predetermined hetero elements at a surface thereof and therein, and, as such, a secondary battery based on the cathode active material may exhibit excellent high-speed charge characteristics and lifespan characteristics.

Abstract: The present specification relates to a vanadium solution, an electrolyte including the same, a secondary battery including the same, and a method for preparing the same.

Abstract: Disclosed are a transition metal precursor for preparing a lithium composite transition metal oxide, a method for preparing the precursor, and a lithium composite transition metal oxide. The transition metal precursor includes a composite transition metal compound having a composition represented by Formula (1) and a Mn content of 60 to 85 mol %: NiaMbMn1-(a+b)(OH1-x)2??(1) where M is at least one selected from the group consisting of Ti, Co, Al, Cu, Fe, Mg, B, Cr, Zr, Zn and period II transition metals, 0.15?a?0.3, 0?b?0.1 and 0<x<0.5. The lithium composite transition metal oxide has a composition represented by Formula (2) and a Mn content of 60 to 85 mol %: Li1+z[NiaMbMn1-(a+b)]2O4-yAy??(2) where M is at least one selected from the group consisting of Ti, Co, Al, Cu, Fe, Mg, B, Cr and period II transition metals, A is a monoanion or dianion, 0.15?a?0.3, 0.005?b?0.1, ?0.1?z?0.1 and 0?y?0.1.

Abstract: The present specification relates to a polymer electrolyte membrane, an electrochemical battery including the polymer electrolyte membrane, an electrochemical battery module including the electrochemical battery, a flow battery including the polymer electrolyte membrane, a method for manufacturing a polymer electrolyte membrane, and an electrolyte solution for a flow battery.

Abstract: The present specification relates to a composite membrane containing an ion transfer polymer and a method for preparing the same.

Abstract: Disclosed are a cathode active material for high voltage and a lithium secondary battery including the same. More particularly, a cathode active material including spinel-type compound particles having a composition represented by Formula 1 below; Li1+aMxMn2?xO4?zAz??(1) where a, x and z are defined in a specification of the present invention, and metal oxides or metal hydroxides present on surfaces of the spinel-type compound particles, and a lithium secondary battery including the same.

Abstract: The present specification relates to a vanadium solution, an electrolyte including the same, a secondary battery including the same, and a method for preparing the same.

Abstract: Disclosed is a precursor for preparing a lithium composite transition metal oxide. More particularly, a transition metal precursor, including a composite transition metal compound represented by Formula 1 below, used to prepare a lithium transition metal oxide: NiaMbMn1?(a+b)(O1?x)2??(1) wherein M is at least one selected form the group consisting of Ti, Co, Al, Cu, Fe, Mg, B, Cr, Zr, Zn and Period II transition metals; and 0.2?a?0.25, 0?b?0.1, and 0<x<0.5.

Abstract: Disclosed are a cathode active material including a lithium transition metal oxide based on at least one transition metal selected from the group consisting of Ni, Mn and Co, wherein at least one hetero element selected from the group consisting of Ti, Co, Al, Cu, Fe, Mg, B, Cr, Bi, Zn and Zr is located at a surface portion of or inside the lithium transition metal oxide, and a secondary battery including the same. The cathode active material according to the present invention includes predetermined hetero elements at a surface thereof and therein, and, as such, a secondary battery based on the cathode active material may exhibit excellent high-speed charge characteristics and lifespan characteristics.

Abstract: Disclosed are a transition metal precursor for preparing a lithium composite transition metal oxide, a method for preparing the precursor, and a lithium composite transition metal oxide. The transition metal precursor includes a composite transition metal compound having a composition represented by Formula (1) and a Mn content of 60 to 85 mol %: NiaMbMn1-(a+b)(OH1-x)2??(1) where M is at least one selected from the group consisting of Ti, Co, Al, Cu, Fe, Mg, B, Cr, Zr, Zn and period II transition metals, 0.15?a?0.3, 0?b?0.1 and 0<x<0.5. The lithium composite transition metal oxide has a composition represented by Formula (2) and a Mn content of 60 to 85 mol %: Li1+z[NiaMbMn1-(a+b)]2O4-yAy??(2) where M is at least one selected from the group consisting of Ti, Co, Al, Cu, Fe, Mg, B, Cr and period II transition metals, A is a monoanion or dianion, 0.15?a?0.3, 0.005?b?0.1, ?0.1?z?0.1 and 0?y?0.1.

Abstract: Disclosed are a cathode active material for high voltage and a lithium secondary battery including the same. More particularly, a cathode active material including spinel-type compound particles having a composition represented by Formula 1 below; and metal oxides or metal hydroxides present on surfaces of the spinel-type compound particles, and a lithium secondary battery including the same. Li1+aMxMn2?xO4?zAz ??(1) where a, x and z are defined in a specification of the present invention.

Abstract: Disclosed herein is a high voltage cathode active material and a method for preparing the same. The cathode active material includes particles of a spinel-type compound having a composition represented by Formula (1) and a carbon-based material present on surfaces of the particles of the spinel-type compound: Li1+aMxMn2?xO4?zAz ??(1) where ?0.1?a?0.1, 0.3?x?0.8 and 0?z?0.1.

Abstract: Disclosed is a precursor for preparing a lithium composite transition metal oxide. More particularly, a transition metal precursor, including a composite transition metal compound represented by Formula 1 below, used to prepare a lithium transition metal oxide: NiaMbMn1?(a+b)(O1?x)2??(1) wherein M is at least one selected form the group consisting of Ti, Co, Al, Cu, Fe, Mg, B, Cr, Zr, Zn and Period II transition metals; and 0.2?a?0.25, 0?b?0.1, and 0<x<0.5.