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Resource separation and recycling production method for waste nickel hydrogen battery content

A nickel-metal hydride battery and production method technology, applied in battery recycling, solid waste removal, waste collector recycling, etc., can solve problems such as high cost, secondary pollution, complicated process, etc., and achieve the effect of retaining usability

Inactive Publication Date: 2011-04-27
SOUTHEAST UNIV
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AI Technical Summary

Problems solved by technology

This method has complex procedures, high cost, and the risk of secondary pollution; the second type is a physical separation plus chemical treatment scheme, first using physical (mechanical) methods to separate waste nickel-metal hydride batteries into shells, positive electrodes, and negative electrodes. powder, perforated steel strip and separator, then supplemented with appropriate chemical treatment to obtain raw materials that can be used in the production of new nickel metal hydride batteries

Method used

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  • Resource separation and recycling production method for waste nickel hydrogen battery content
  • Resource separation and recycling production method for waste nickel hydrogen battery content

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Experimental program
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Embodiment Construction

[0019] 1. Mechanical crushing of batteries:

[0020] In order to make reprocessing easier, the crushing of the battery should be done in a gentle way. In the laboratory, a hacksaw can be used to saw open the battery casing that has discharged residual electricity; in industry, a machine that can peel off the plastic and metal casing of a battery that has discharged residual electricity can be used to remove the battery casing. The metal case is separated from the battery core.

[0021] Existing nickel-metal hydride batteries generally adopt the method of coating the positive and negative electrode active materials on the nickel foam and the perforated steel strip respectively, and using a diaphragm to separate the electrode materials from direct contact. In order to facilitate subsequent processing, the electrode sheet should then be cut into pieces of 1 cm to 5 cm square.

[0022] 2. Separation of electrolyte from other solid contents

[0023] The electrolyte contained in ...

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PUM

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Abstract

A method for resource-separating and circulating-producing the waste and old nickel-hydrogen battery component relates to a method for physically separating various components comprising casing, electrolyte, positive electrode material, negative electrode material, adhesive and negative electrode collector perforated steel ribbon in the waste and old nickel-hydrogen battery, and a plan for separating the obtained pure electrode material for recycling, and the invention provides a low-cost route for the resource and circulating production of the waste and old nickel-hydrogen battery. The physical separating route is defined in the chart. The positive plate obtained by separation can be converted to the positive electrode material which can be used for the production of the new battery witha chemical method; the negative electrode material which can be used for the production of the new battery is obtained by washing, adjusting the metal proportion, smelting, grinding and filtering to the hydrogen storage alloy thereby completing the circulating production of the nickel-hydrogen battery.

Description

technical field [0001] The present invention relates to a physical separation method for various components in waste nickel-metal hydride batteries, including shells, electrolytes, positive electrode materials, hydrogen storage alloys, and perforated steel strips for current collectors, as well as the positive electrode materials and storage materials obtained by the separation. The reuse scheme of hydrogen alloy provides a low-cost route for the recycling of waste nickel-hydrogen batteries and the recycling production of nickel-hydrogen batteries. Background technique [0002] Nickel-metal hydride (NiMH) battery is a kind of green energy, which has the characteristics of high energy density, high output power, and no pollution. It has been used in wireless communication, electric tools, and hybrid vehicles. In recent years, Li-ion batteries have replaced Ni-MH batteries in high-end applications due to their higher energy density. Nevertheless, NiMH batteries still occupy a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/54B09B3/00
CPCY02W30/84
Inventor 雷立旭余小文
Owner SOUTHEAST UNIV
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