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Lithium air battery of micro-nano spherical structure

A lithium-air battery, micro-nano-level technology, applied in the direction of battery electrodes, structural parts, circuits, etc., can solve the problems of blocking air electrode pores, discharge termination, etc., and achieve the effect of extending the continuous discharge time

Active Publication Date: 2014-08-06
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to provide a lithium-air battery with a micro-nano spherical structure, which overcomes the problem of discharge termination due to the deposition of lithium oxide or lithium peroxide, the discharge product, on the air electrode to block the pores of the air electrode during the continuous operation of the lithium-air battery. question

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  • Lithium air battery of micro-nano spherical structure

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0013] Such as figure 1 As shown, the lithium-air battery with micro-nano spherical structure in this embodiment is composed of lithium metal ball 1, hydrophobic colloidal electrolyte 2, carbon cloth 3 loaded with catalyst, and wire 4; the surface of lithium metal ball 1 is coated with hydrophobic glue state electrolyte 2, the surface of the hydrophobic colloidal electrolyte 2 is coated with a catalyst-loaded carbon cloth 3, and there are wires 4 leading out to collect current at the lithium metal ball 1 and the catalyst-loaded carbon cloth 3 respectively. The lithium metal ball 1 is a lithium or lithium alloy sphere with a radius less than 100um. The hydrophobic colloidal electrolyte 2 is a non-volatile hydrophobic ionic liquid colloidal electrolyte with a thickness between 300-900um. The catalysts in the carbon cloth 3 loaded with catalysts...

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Abstract

The invention discloses a lithium air battery of a micro-nano spherical structure in the technical field of lithium air batteries. The lithium air battery comprises a lithium metallic sphere, a hydrophobic colloidal electrolyte, a carbon cloth with a catalyst and guide lines, wherein the hydrophobic colloidal electrolyte is coated on a surface of the lithium metallic sphere; the carbon cloth with the catalyst is coated on a surface of the hydrophobic colloidal electrolyte; and the guide lines are led out at the lithium metallic sphere and the carbon cloth with the catalyst. The surface area of an anode of the lithium air battery is dozens of times that of a cathode of the lithium air battery; and the lithium air battery solves the problem that the discharge is ended because apertures on the carbon cloth are blocked by discharging products in the long-term discharge process, thus prolonging the continuous discharge time of the lithium air battery.

Description

technical field [0001] The invention belongs to the technical field of lithium-air batteries, and in particular relates to a lithium-air battery with a micro-nano spherical structure. Background technique [0002] Lithium-air batteries have become an energy conversion system that has attracted much attention due to their high theoretical specific capacity, specific energy, and environmental friendliness. A lithium-air battery is a battery that uses lithium metal as the negative electrode and oxygen in the air as the positive electrode reactant. Discharge process: Lithium at the anode releases electrons and becomes lithium cations. Lithium ions pass through the electrolyte material, combine with oxygen and electrons flowing from the external circuit at the cathode to form lithium oxide or lithium peroxide, and stay at the cathode. Lithium-air batteries have a higher energy density than lithium-ion batteries because their cathodes (based on porous carbon) are lightweight and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M12/06H01M4/86H01M4/92
CPCY02E60/50
Inventor 蒲薇华蔡克迪王诚任建国高勇邓长生
Owner TSINGHUA UNIV
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