Waste ternary power lithium ion battery environmental-friendly recovery method based on electrolysis of sodium sulfate

A lithium-ion battery and recycling method technology, which is applied in the field of green recycling of waste ternary power lithium-ion batteries based on electrolytic sodium sulfate, can solve problems such as emission limits of waste gas, waste liquid or solid waste, and achieves low requirements for equipment anticorrosion, The effect of strong operability and wide application area

Active Publication Date: 2020-10-16
CHANGZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

With the improvement of domestic environmental protection requirements, the commonly used recycling methods are currently limited due to the discharge of waste gas, waste liquid or solid waste, and there is an urgent need to develop a green and environmentally friendly recycling method for ternary lithium-ion battery materials.

Method used

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  • Waste ternary power lithium ion battery environmental-friendly recovery method based on electrolysis of sodium sulfate

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Embodiment Construction

[0026] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative work shall fall within the protection scope of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0027] See figure 1 , A green recycling method for waste ternary power lithium-ion batte...

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Abstract

The invention relates to a waste ternary power lithium ion battery environmental-friendly recovery method based on electrolysis of sodium sulfate. The method primarily comprises the following steps of1) disassembling and pre-treating a ternary power lithium ion battery; 2) removing an organic phase and a binder; 3) electrolyzing sodium sulfate to prepare sulfuric acid and sodium hydroxide solutions; 4) carrying out precipitation separation on aluminum in the power lithium ion battery; 5) leaching electrode material powder; and 6) precipitating and recovering nickel, cobalt, manganese and lithium. The invention provides the waste ternary power lithium ion battery environmental-friendly recovery method based on electrolysis of sodium sulfate. By taking acid and alkali solutions produced byelectrolysis of sodium sulfate as a leaching agent, valuable metals in the waste ternary power lithium ion battery are recycled comprehensively, and in the whole process, strong acids and alkali are not used, so that waste liquor is not generated and the method is green and environmental-friendly.

Description

Technical field [0001] The invention belongs to the technical field of battery recovery, and specifically relates to a green recovery method for waste ternary power lithium ion batteries based on electrolytic sodium sulfate. Background technique [0002] In recent years, with the rapid development of new energy vehicles, the recycling of battery materials for power vehicles has become a hot issue of research and development. The ternary power lithium-ion battery has the same composition as other lithium-ion batteries, mainly including a casing, a positive electrode, a negative electrode, an organic electrolyte, and a separator. The negative electrode of a conventional ternary battery is usually a copper sheet coated with a mixture of negative electrode active material (graphite), water-soluble binder styrene butadiene rubber (SBR) and additives; the positive electrode is coated with positive electrode active material (nickel cobalt lithium manganate, nickel Cobalt aluminum lithi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B59/00C22B23/00C22B19/20C22B19/30C22B47/00C25B1/22C25B1/20H01M10/54
CPCC22B7/007C22B7/008C22B59/00C22B23/043C22B19/22C22B19/30C22B47/00C25B1/22C25B1/20H01M10/54Y02W30/84Y02P10/20
Inventor 罗鲲诸葛祥群何雨林方加虎罗志虹
Owner CHANGZHOU UNIV
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