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Spirally wound lithium-air solid state battery with replaceable electrodes

A solid-state battery, wound-type technology, applied in the direction of electrical components, battery electrodes, fuel cell half-cells and secondary battery-type half-cells, etc., can solve the problem that the positive and negative electrodes of lithium-air batteries cannot be fully utilized, To achieve the effect of convenient and quick replacement operation, avoid waste, and tight connection

Active Publication Date: 2013-04-24
严格集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims to solve the problem that the lithium-air battery exists in the continuous working process, because the discharge product lithium oxide or lithium peroxide is deposited on the air electrode, which blocks the pores of the air electrode and causes discharge termination; the positive and negative electrodes of the lithium-air battery cannot be fully utilized; Due to the negative air pressure problem of the positive electrode of the air battery due to the consumption of metal lithium, a wound-type lithium-air solid-state battery with replaceable electrodes is provided

Method used

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  • Spirally wound lithium-air solid state battery with replaceable electrodes
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  • Spirally wound lithium-air solid state battery with replaceable electrodes

Examples

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specific Embodiment approach 1

[0018] Embodiment 1: In this embodiment, a wound-type lithium-air solid-state battery with replaceable electrodes consists of a conductive rod 1-1, a conductive sheet 1-2, a negative electrode sheet 1-3, a gel electrolyte-air positive electrode combination 2, and a positive electrode A current collector 3, a positive electrode lead connector 4, a negative electrode gas seal head 5, a positive electrode gas seal head 6, an airtight diaphragm 7 and a ventilating casing 8; wherein, the upper end of the conductive rod 1-1 is a negative electrode connector, and the negative electrode connector has an external thread. The conductive rod 1-1 is the central axis, the conductive rod 1-1 is welded to one end of the conductive sheet 1-2, the other end of the conductive sheet 1-2 is hooked to the negative electrode sheet 1-3, and the conductive sheet 1-2 is connected to the negative electrode sheet 1-2. 3 The whole is tightly wound on the surface of the conductive rod 1-1, and the surface ...

specific Embodiment approach 2

[0021] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the positive current collector 3 is made of stainless steel, copper alloy, aluminum alloy, magnesium alloy, nickel alloy, titanium alloy, polyacetylene or linear polyphenylene. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0022] Specific embodiment 3: The difference between this embodiment and specific embodiment 1 or 2 is that the material of the negative gas sealing head 5 is polytetrafluoroethylene, polyvinylidene fluoride, polystyrene, polypropylene, polyimide, phenolic Resin, polyvinyl chloride, polychlorotrifluoroethylene or polyethylene, and the material of the positive gas sealing head 6 is polytetrafluoroethylene, polyvinylidene fluoride, polystyrene, polypropylene, polyimide, phenolic resin, polychlorinated Ethylene, polychlorotrifluoroethylene or polyethylene. Others are the same as in the first or second embodiment.

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Abstract

The invention relates to a battery, and particularly relates to a spirally wound lithium-air solid state battery with replaceable electrodes, which aims at solving the problems that the plugging of air electrode holes caused by the deposition of discharge products on air electrodes results in discharge termination during the working of the primary lithium air battery; and the positive and negative electrodes of the lithium air battery can not be fully utilized, and the suction of oxygen caused by that the consumption of the metal lithium the corrosion produces negative pressure results in the corrosion of the negative plate. The spirally wound lithium-air solid state battery with the replaceable electrodes comprises a conductive rod, a conducting strip, a negative plate, a gel electrolyte air positive electrode combination body, a positive electrode current collector, a positive electrode lead connector, a negative electrode airtight head, a positive electrode airtight head, an airtight diaphragm and an air transmission casing. The battery has long continuous discharge time under same conditions, and the positive and the negative electrodes are fully utilized as the inner stresses of the conducting strip and a negative plate combination body are automatically tightly connected after the electrodes are replaced; and due to the technology of the invention, the spirally wound lithium-air solid state battery with replaceable electrodes is produced.

Description

technical field [0001] The present invention relates to batteries. Background technique [0002] The lithium-air battery uses metal lithium as the negative electrode and oxygen as the positive electrode, and its energy density can reach more than 15 times that of lithium-ion batteries. Theoretically, since oxygen is not restricted as a positive electrode reactant, the capacity of this battery depends only on the lithium electrode, with a specific energy of 5.21 kWh / kg (including oxygen) or 11.14 kWh / kg (excluding oxygen). Compared with other metal-air batteries, lithium-air batteries have higher specific energy and less pollution. [0003] Oxygen generates O on the surface of porous air electrodes during long-term discharge of lithium-air batteries 2- or O 2 2- , followed by Li in the electrolyte + Combined to form the product Li 2 o 2 or Li 2 O, which is not dissolved in the organic electrolyte, so the discharge product can only be produced in the presence of O 2- ...

Claims

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Application Information

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IPC IPC(8): H01M12/08H01M4/86
CPCY02E60/50Y02E60/128Y02E60/10
Inventor 张锦秋李达安茂忠杨培霞
Owner 严格集团股份有限公司
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