Abstract: A composite for the cathode of Li-ion battery is disclosed and comprises: a base active material represented by Li1+a(N1?b?cCobMnc)O2 wherein 0?a?0.5, 0?b?0.4, 0?c?0.6, with b+c<1; and a coating on the base active material comprising a phase containing the components B2O3 or SnBxO2+3x/2?y/2Fy; wherein 0?x?5, 0<y<4+3x; wherein relative to the total amount of the base active material, the weight percentage of B element is not more than 2 wt %, the weight percentage of Sn element is not more than 5 wt %. A method for making a composite is disclosed and includes: mixing the base active material with the phase components and/or a precursor for the phase components; and firing the mixture obtained. The application provides a high capacity, long cycle life cathode material that is stabilized at high voltages.

Abstract: The present invention provides a method for removing copper and aluminum from an electrode material and a process for recycling electrode material from waste lithium-ion batteries. The method for removing copper and aluminum from the electrode material comprises: subjecting the electrode material containing electrode active material, copper and aluminum to reaction with an aqueous solution, wherein the aqueous solution has a pH value of higher than 10, and comprises base, oxidizing agent and complexing agent. The process for recycling electrode material from waste lithium-ion batteries comprises: a) harvesting an electrode material containing electrode active material, copper and aluminum from waste lithium-ion batteries; b) removing copper and aluminum from the electrode material according to the foresaid method; and c) further purifying and regenerating the electrode active material for reuse in new lithium-ion batteries.

Abstract: The present invention provides a Li-ion pouch cell wherein the Li-ion pouch cells comprise a sealed enclosure, electrode stack and thermally conductive elements, wherein the electrode stack and the thermally conductive elements are in the sealed enclosure, the thermally conductive elements include extensions which extend beyond the electrode stack, the sealed enclosure has thermal conductivity, the thermally conductive elements provide a thermally conductive pathway connecting the electrode stack and the sealed enclosure by way of the extension. The present invention also provides a cell module comprising the Li-ion pouch cells. The Li-ion pouch cell and the cell module according to the present application could minimize differences in cell temperature, monitor internal cell temperature, cool the cell rapidly, increase cell and module safety, allowing for minimal impact on cell energy density, performance or life and difficulty of manufacturing.

Abstract: A composite for the cathode of Li-ion battery is disclosed and comprises: a base active material represented by Li1+a(N1-b-cCobMnc)O2 wherein 0?a?0.5, 0?b?0.4, 0?c?0.6, with b+c<1; and a coating on the base active material comprising a phase containing the components B2O3 or SnBxO2+3x/2-y/2Fy; wherein 0?x?5, 0<y<4+3x; wherein relative to the total amount of the base active material, the weight percentage of B element is not more than 2 wt %, the weight percentage of Sn element is not more than 5 wt %. A method for making a composite is disclosed and includes: mixing the base active material with the phase components and/or a precursor for the phase components; and firing the mixture obtained. The application provides a high capacity, long cycle life cathode material that is stabilized at high voltages.

Abstract: Li-ion cathode materials with improved performance characteristics and precursors to prepare such materials are disclosed. The precursors consist of complex, mixed alkali transition metal oxides of the formula LixAy(MnaNibMc)O2+d, where M represents one or more selected from transition metal elements beside Ni and Mn, and the groups IIA and IIIA elements of the periodic table, x is between 1 and 1.4, y is between 0.1 and 0.5, and x+y is between 1.1 and 1.5, a+b+c=1, the value of d depends on the proportions and average oxidation states of the cation elements Li, A, Mn, Ni and M such that the combined positive charge of the cation elements is balanced by the number of oxygen anions, A represents one or more elements selected from Na, K and Cs. The Li-ion cathode materials are produced by exchange of element(s) A for Li under mild conditions to limit the degree of structural reorganization that occurs during the reaction.

Abstract: Herein is disclosed a process for recycling electrode material from lithium-ion batteries, comprising harvesting a mixture of anode and cathode electrode materials from waste lithium-ion batteries, and separating the anode electrode material from the cathode electrode material by means of dense liquid separation. The mixed anode and cathode material is suspended in a liquid that has a density between those of the anode material and cathode material, such that the anode material rises to the top of the dense liquid and the cathode material sinks to the bottom of the dense liquid. The thus separated materials can easily be collected and further purified and regenerated for reuse in new lithium-ion batteries, providing an efficient and low-cost method for recycling electrode active materials from waste lithium-ion batteries.

Abstract: Herein is disclosed a process for recycling electrode material from lithium-ion batteries, comprising harvesting a mixture of anode and cathode electrode materials from waste lithium-ion batteries, and separating the anode electrode material from the cathode electrode material by means of dense liquid separation. The mixed anode and cathode material is suspended in a liquid that has a density between those of the anode material and cathode material, such that the anode material rises to the top of the dense liquid and the cathode material sinks to the bottom of the dense liquid. The thus separated materials can easily be collected and further purified and regenerated for reuse in new lithium-ion batteries, providing an efficient and low-cost method for recycling electrode active materials from waste lithium-ion batteries.

Abstract: The present invention provides a method for removing copper and aluminum from an electrode material and a process for recycling electrode material from waste lithium-ion batteries. The method for removing copper and aluminum from the electrode material comprises: subjecting the electrode material containing electrode active material, copper and aluminum to reaction with an aqueous solution, wherein the aqueous solution has a pH value of higher than 10, and comprises base, oxidizing agent and complexing agent. The process for recycling electrode material from waste lithium-ion batteries comprises: a) harvesting an electrode material containing electrode active material, copper and aluminum from waste lithium-ion batteries; b) removing copper and aluminum from the electrode material according to the foresaid method; and c) further purifying and regenerating the electrode active material for reuse in new lithium-ion batteries.

Abstract: Herein is disclosed a process for preparing a cathode active material for lithium-ion batteries, comprising preparing a slurry by mixing a lithium-deficient cathode active material for lithium-ion batteries with a solution containing lithium-ions; and applying a direct current in the slurry using a working electrode and a counter electrode. A method for recycling the cathode active material from lithium-ion batteries is also provided. The process of the invention can be used to recycle the cathode active material from used or waste lithium-ion batteries efficiently and at low cost, and the recycled cathode active material can be used to prepare new lithium-ion batteries.

Abstract: Li-ion cathode materials with improved performance characteristics and precursors to prepare such materials are disclosed. The precursors consist of complex, mixed alkali transition metal oxides of the formula LixAy(MnaNibMc)O2+d, where M represents one or more selected from transition metal elements beside Ni and Mn, and the groups IIA and IIIA elements of the periodic table, x is between 1 and 1.4, y is between 0.1 and 0.5, and x+y is between 1.1 and 1.5, a+b+c=1, the value of d depends on the proportions and average oxidation states of the cation elements Li, A, Mn, Ni and M such that the combined positive charge of the cation elements is balanced by the number of oxygen anions, A represents one or more elements selected from Na, K and Cs. The Li-ion cathode materials are produced by exchange of element(s) A for Li under mild conditions to limit the degree of structural reorganization that occurs during the reaction.

Abstract: The present invention provides a Li-ion pouch cell wherein the Li-ion pouch cells comprise a sealed enclosure, electrode stack and thermally conductive elements, wherein the electrode stack and the thermally conductive elements are in the sealed enclosure, the thermally conductive elements include extensions which extend beyond the electrode stack, the sealed enclosure has thermal conductivity, the thermally conductive elements provide a thermally conductive pathway connecting the electrode stack and the sealed enclosure by way of the extension. The present invention also provides a cell module comprising the Li-ion pouch cells. The Li-ion pouch cell and the cell module according to the present application could minimize differences in cell temperature, monitor internal cell temperature, cool the cell rapidly, increase cell and module safety, allowing for minimal impact on cell energy density, performance or life and difficulty of manufacturing.