Lithium-containing hydrogen-storing alloy electrode material and its prepn

A hydrogen storage alloy and electrode material technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of increasing processes and equipment, making it difficult to realize industrialization, and increasing product costs, so as to achieve less energy consumption and easy industrialization And promotion, the effect of long cycle life

Inactive Publication Date: 2003-05-14
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The diffusion method solves the difficult problem that the smelting method Li is extremely volatile and cannot be operated, but the diffusion meth

Method used

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  • Lithium-containing hydrogen-storing alloy electrode material and its prepn
  • Lithium-containing hydrogen-storing alloy electrode material and its prepn
  • Lithium-containing hydrogen-storing alloy electrode material and its prepn

Examples

Experimental program
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Effect test

Embodiment 1

[0017] the element

[0018] discharge cycle

Embodiment 2

[0020] the element

Embodiment 3

[0022] cycle

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Abstract

In the present invention, during the ball milling of AB5 type hydrogen-storing alloy is a special high-energy ball mill, LiH or Li is made to form alloy mechanically with AB5 type hydrogen-storing alloy to prepare composite hydrogne-storing alloy electrode material with Li content of 0.1-2.0 wt%. The present invention is also suitable for preparing composite lithium-containing hydrogen-storing alloy electrode material with AB, A2B and AB2 type hydrogen-storing alloy. The present invention utilizes the leaching of Li in alkali solution of make hydrogen-storing alloy form pores and to raise theelectric catalytic activity of Ni/MH cell negative pole. In addition, Li dissolved in the alkali solutio to form LiOH can protect the positive pole of the cell, and raise the circulation life and discharge capacity of cell.

Description

technical field [0001] The invention relates to a lithium-containing composite hydrogen storage alloy electrode material and a preparation method thereof, belonging to the hydrogen storage alloy electrode material and preparation technology. Background technique [0002] Nickel-metal hydride batteries (Ni / MH batteries) have been rapidly developed due to their advantages of high energy density, long cycle life, no memory effect and no environmental pollution. Small cylindrical Ni-MH batteries have been industrialized and commercialized; large-capacity power Ni / MH batteries have been selected as power batteries for electric vehicles due to environmental pollution caused by fuel motorcycles and automobile emissions, and research and development are being stepped up. At present, the negative electrode hydrogen storage material of Ni / MH battery is basically multi-component AB 5 Hydrogen storage alloys, where Mm(Ni-Co-Mn-Al) 5 (J6 2020-25-A, CA107:99728f) is widely used. Hydrog...

Claims

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Application Information

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IPC IPC(8): H01M4/38H01M4/40
CPCY02E60/12Y02E60/10
Inventor 吴锋高学平曲金秋金季荪李玉刚牛广良袁华堂宋德瑛
Owner NANKAI UNIV
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