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High-performance low-cost hydrogen storage alloy powder for nickel-hydrogen power battery and preparation method thereof

A technology of hydrogen storage alloy powder and power battery, which is applied in the direction of nickel storage battery, battery electrode, alkaline storage battery, etc., can solve the problem of high cost, achieve low cost, improve market competitiveness and high performance

Active Publication Date: 2019-09-20
LANZHOU JINCHUAN KELIYUAN BATTERY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, most of the existing hydrogen storage alloy powders contain praseodymium and neodymium, and their cost is relatively high

Method used

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  • High-performance low-cost hydrogen storage alloy powder for nickel-hydrogen power battery and preparation method thereof
  • High-performance low-cost hydrogen storage alloy powder for nickel-hydrogen power battery and preparation method thereof
  • High-performance low-cost hydrogen storage alloy powder for nickel-hydrogen power battery and preparation method thereof

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the examples, but the present invention is not limited to the expressions of the examples.

[0020] Table 1 shows the mass content of each metal element in the high-performance and low-cost hydrogen storage alloy powder for nickel-hydrogen power batteries in Examples 1-15.

[0021] Table 1

[0022]

[0023] The high-performance and low-cost hydrogen storage alloy powders for nickel-hydrogen power batteries in Examples 1-15 are specifically prepared according to the following steps:

[0024] (1) Take each metal raw material according to the mass ratio of each metal element in the composition in each embodiment in Table 1 respectively, and the raw materials weighed are nickel metal for the bottom layer, cobalt and manganese metal for the middle and lower layers, and cobalt and manganese metal for the middle and upper layers. Latium, cerium and yttrium metals are put into the crucible of the cast...

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Abstract

The invention provides a high-performance low-cost hydrogen storage alloy powder for a nickel-hydrogen power battery. The powder comprises, by mass, 25% to 27%of La, 4.5% to 6.5% of Ce, 0.1% to 1% of Y, 58% to 60% of Ni, 2% to 3% of Co, 4% to 6% of Mn and 1.5% to 2%of Al. The invention also provides a preparation method for the high-performance low-cost hydrogen storage alloy powder used for the nickel-hydrogen power battery. The high-performance low-cost hydrogen storage alloy powder for the nickel-hydrogen power battery of the invention does not contain elemental Pr and elemental Nd and has low Co content; the preparation method is excellent and feasible; and the nickel-hydrogen power battery produced by using the method is reduced in cost while meeting the demands for high-power large-current discharge and long service life, so the market competitiveness of nickel-hydrogen power battery is improved.

Description

technical field [0001] The invention relates to a high-performance and low-cost hydrogen storage alloy powder for nickel-hydrogen power batteries and a preparation method thereof. Background technique [0002] Nickel-hydrogen batteries are widely used in mobile phones, notebook computers, electric vehicles and other fields due to their high specific capacity, fast charging, overcharge resistance, long cycle life without pollution, etc. In particular, the use of power batteries has been widely used in hybrid vehicles of companies such as Toyota in Japan and Geely in China. As the price of rare earth continues to rise, especially the substantial increase of praseodymium and neodymium metals, the production cost of nickel-metal hydride power batteries has brought great pressure. At present, most of the existing hydrogen storage alloy powders contain praseodymium and neodymium, and their cost is relatively high. Therefore, it is one of the current research directions to study ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/38H01M10/30
CPCH01M4/383H01M4/385H01M10/30Y02E60/10
Inventor 杨利芝王成均朱再立徐国伟
Owner LANZHOU JINCHUAN KELIYUAN BATTERY
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