Method for recycling manganese and lithium from power type lithium manganate battery for electric automobile
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A type of lithium manganate, electric vehicle technology, applied in the field of manganese and lithium recovery, can solve the problems of not being able to recycle alone, difficult to ensure quality, easy to cause errors, etc., and achieve the effects of simple operation, cost reduction, and environmental pollution reduction
Inactive Publication Date: 2012-02-08
GUANGDONG BRUNP RECYCLING TECH
View PDF6 Cites 37 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
This patent does not separate each element, and cannot recycle each element separately; each preparation needs to measure and...
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0037] A method for recovering manganese and lithium in a power type lithium manganate battery for electric vehicles, comprising the following steps:
[0038] (1) After discharging the used lithium-ion battery, disassemble and remove the shell to obtain the positive part;
[0039] (2) Heating the positive electrode part at 300°C for 60 minutes, removing the organic binder, detaching the aluminum foil, and obtaining the dynamic lithium manganate positive electrode material;
[0040] (3) Weigh 100 g of the above-mentioned lithium manganese oxide cathode material, add 2L 2.0 mol / L hydrochloric acid and 200 ml 30% hydrogen peroxide, heat to 60°C, and stir at constant temperature for 2 h to dissolve it, filter to remove acetylene black, Obtain the filtrate containing modified metal ions such as lithium ion, manganese ion, and magnesium ion, aluminum ion, chromium ion;
[0041] (4) Use the filtrate obtained in step (3) as the electrolyte, the titanium sheet as the working electrode...
Embodiment 2
[0051] A method for recovering manganese and lithium in a power type lithium manganate battery for electric vehicles, comprising the following steps:
[0052] (1) After discharging the used lithium-ion battery, disassemble and remove the shell to obtain the positive part;
[0053] (2) Heating the positive electrode part at 500°C for 30 minutes to remove the organic binder and detach the aluminum foil to obtain a lithium manganate positive electrode material without aluminum foil;
[0054] (3) Weigh 80 g of the above-mentioned lithium manganate cathode material, add 2L of 1.5 mol / L sulfuric acid and 50 g of sodium thiosulfate, heat to 80 °C, and stir at constant temperature for 1 h to dissolve, filter to remove acetylene black , obtain the filtrate containing modified metal ions such as lithium ion, manganese ion, and magnesium ion, aluminum ion, chromium ion;
[0055] (4) Use the filtrate obtained in step (3) as the electrolyte, the titanium sheet as the working electrode, an...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Login to view more
Abstract
The invention discloses a method for recycling manganese and lithium from a power type lithium manganate battery for an electric automobile, which comprises the following steps of: (1) after discharging a waste and old lithium ion battery, detaching a shell to obtain an anode part; (2) removing an organic adhesive of the anode part to obtain a power type lithium manganate anode material; (3) adding acid and a reducing agent into the inorganic material obtained in the step (2), dissolving the inorganic material and filtering to remove the undissolved substance acetylene black to obtain filter liquid; (4) carrying out electrochemical deposition for 5-8 hours by using the filter liquid obtained in the step (3) as electrolyte, using a titanium sheet as a working electrode, using a graphite rod as a counter electrode and controlling the constant current density of 300-800A/m<2> and the temperature of 60-80 DEG C to obtain a manganese dioxide solid; (5) adjusting the pH of the residual liquid in the step (4) to be 9 to 10 and filtering to obtain a sediment and filter liquid; (6) adding a sodium carbonate solution with the concentration of 30-40 percent into the filter liquid obtained in the step (5) till the filter liquid is completely deposited; and filtering, washing and drying to obtain a lithium carbonate solid. MnO2 is recycled by utilizing an electrochemical deposition method, and thereby the method has the advantage of environmental protection; and the high-purity lithium carbonate solid is recycled.
Description
technical field [0001] The invention relates to a method for recovering manganese and lithium in a power type lithium manganate battery for an electric vehicle. Background technique [0002] Lithium-ion batteries have the advantages of high energy density, long cycle life, fast charging, and no memory effect. They are widely used in portable digital products such as mobile phones, cameras, and notebook computers. Among them, the power lithium manganate battery is the first choice for electric vehicles. one of the power sources. [0003] Lithium-ion batteries are not well assembled during the production process, or after a certain number of charges and discharges during use, the electrodes will expand, the capacity will decrease, and they will eventually be scrapped. As the use of lithium-ion batteries continues to increase every year, the number of scrapped lithium-ion batteries has increased significantly year by year, especially today as electric vehicles are gradually st...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more