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Low-cost and high-performance anode material for Ni/Co battery

A technology of battery negative electrode and negative electrode material, applied in the direction of alkaline battery electrode, battery electrode, battery recycling, etc., can solve the problems of high cost and poor rate discharge performance, and achieve the effect of low cost, good discharge performance and high discharge capacity

Inactive Publication Date: 2012-05-16
天津市钰源地紧固件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of battery has long life, high capacity, no pollution, and strong practicability. However, the current Co-containing anode materials still have problems such as poor rate discharge performance and high cost, and there is still a long way to go before industrialization.

Method used

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  • Low-cost and high-performance anode material for Ni/Co battery
  • Low-cost and high-performance anode material for Ni/Co battery
  • Low-cost and high-performance anode material for Ni/Co battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0009] The present invention will be further described below in conjunction with the accompanying drawings.

[0010] The waste lithium-ion battery (manufactured by Tianjin Lishen Battery Co., Ltd.) was disassembled, the positive electrode was put into lye to corrode the aluminum foil and binder, and the sample material was obtained by filtering and drying. XRD shows that the main component of the sample is LiCoO 2 ( figure 1 ), also contains 3wt.% acetylene black (measured by ICP). Mix 0.2g sample with 0.02g S powder, add conductive agent and binder smear to make electrode for testing. according to figure 2 , the maximum discharge capacity reaches 472.6mhA / g at a low current of 100mA / g. according to image 3 , under the high discharge current of 500mA / g, the discharge capacity was 465.9mhA / g in the 10th week, 401.4mhA / g in the 300th week, and the capacity retention rate reached 86.16%. The estimated cost is only equivalent to AB on the market 5 50% of the type hydrogen...

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Abstract

The invention discloses a low-cost and high-performance anode material for a Ni / Co battery, which is realized through the following technical scheme that: the anode material is obtained through the following steps of: dismantling a wasted lithium ion battery, putting an anode into alkali liquor so as to eat off aluminium foil and bonder, filtering and drying; and the material contains 93 percent to 95 percent of LiCoO2, 3 percent to 5 percent of acetylene black, and the balance of impurities. Since the low-cost and high-performance anode material for the Ni / Co battery, disclosed by the invention, is used as an electrode material, the discharge capacity is high, the cycle life is good, the high-rate discharge performance is good, and the cost is low.

Description

technical field [0001] The invention relates to the field of nickel-cobalt (Ni / Co) battery negative electrode materials, more specifically, relates to a low-cost and high-performance Ni / Co battery negative electrode material. Background technique [0002] So far, only Ni / Cd batteries and Ni / MH batteries have been industrialized among alkaline secondary batteries. Ni / Cd batteries have the advantage of being resistant to charging, but they have low capacity, short life, memory effect, and high environmental pollution, and are currently on the verge of being eliminated. The commercial production of Ni / MH batteries has a history of more than ten years since the 1990s, and large-scale production has already occurred in my country. Ni / MH batteries have the advantages of high specific capacity, large discharge depth, resistance to overcharge and overdischarge, short charging time, and no memory effect. Ni-MH batteries have higher capacity than Ni / Cd batteries and have no memory e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/24H01M4/525H01M10/54
CPCY02E60/124Y02E60/122Y02E60/10Y02W30/84
Inventor 宋大卫苏振馨蔡洪元李丽
Owner 天津市钰源地紧固件有限公司