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Metal-air battery based on silver-copper catalysis and preparation method thereof

A metal-air battery and air electrode technology, which is applied to battery electrodes, fuel cell half-cells, primary battery-type half-cells, circuits, etc., can solve problems such as seawater corrosion, poor adaptability of battery types, carbon dioxide poisoning, etc., to achieve Corrosion resistance, good resistance to carbon dioxide and seawater corrosion, effect of promoting reduction reaction

Active Publication Date: 2015-04-22
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0035] In order to solve the problems of poor battery type adaptability, carbon dioxide poisoning and seawater corrosion in the existing air electrode technology, the present invention proposes a metal-air battery based on silver-copper catalysis and its preparation method

Method used

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  • Metal-air battery based on silver-copper catalysis and preparation method thereof
  • Metal-air battery based on silver-copper catalysis and preparation method thereof
  • Metal-air battery based on silver-copper catalysis and preparation method thereof

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Embodiment 1

[0056] This embodiment is a zinc-air primary battery based on silver copper catalysis and a preparation method thereof. The metal-air battery includes a metal anode, an air electrode, an electrolyte, a glass fiber separator and a battery case, and is assembled according to a conventional method. The feature of this embodiment is that the catalyst layer of the metal-air battery is composed of carbon-free and adhesive-free Ag-Cu nano-alloy, and the catalyst layer is directly electrodeposited with a layer of Ag-Cu alloy on the foamed nickel. The microscopic morphology of the Ag-Cu alloy is spherical nanoparticles. The diameter of the spherical nanoparticles is 200-600 nanometers, and the small particles are evenly distributed on the spherical surface. The atomic ratio of the Ag-Cu alloy is Ag:Cu=75:25. The constituent elements of the Ag-Cu alloy are zero-valent Ag and Cu. The Ag-Cu alloy is a solid solution phase.

[0057] The manufacturing process of the metal-air battery is:

[...

Embodiment 2

[0065] This embodiment is a zinc-air primary battery based on silver copper catalysis and a preparation method thereof. The metal-air battery includes a metal anode, an air electrode, an electrolyte, a glass fiber separator and a battery case, and is assembled according to a conventional method. The feature of this embodiment is that the catalyst layer of the metal-air battery is composed of a carbon-free and adhesive-free Ag-Cu nano-alloy, and the catalyst layer is characterized in that a layer of Ag-Cu is directly electrodeposited on the foamed nickel. Alloy, the microscopic morphology of Ag-Cu alloy is spherical nano-particles, the diameter of spherical nano-particles is 200-600 nanometers, and small particles are evenly distributed on the spherical surface. The atomic ratio of the Ag-Cu alloy is Ag:Cu=50:50. The constituent elements of the Ag-Cu alloy are zero-valent Ag and Cu. The Ag-Cu alloy is a solid solution phase.

[0066] The preparation process of the metal-air bat...

Embodiment 3

[0074] This embodiment is a zinc-air primary battery based on silver copper catalysis and a preparation method thereof. The metal-air battery includes a metal anode, an air electrode, an electrolyte, a glass fiber separator and a battery case, and is assembled according to a conventional method. The feature of this embodiment is that the catalyst layer of the metal-air battery is composed of a carbon-free and adhesive-free Ag-Cu nano-alloy, and the catalyst layer is characterized in that a layer of Ag-Cu is directly electrodeposited on the foamed nickel. Alloy, the microscopic morphology of Ag-Cu alloy is spherical nano-particles, the diameter of the spherical nano-particles is 200-600 nanometers, and the small particles are evenly distributed on the spherical surface. The atomic ratio of the Ag-Cu alloy is Ag:Cu=25:75. The constituent elements of the Ag-Cu alloy are zero-valent Ag and Cu. The Ag-Cu alloy is a solid solution phase. The anode of the metal-air battery is Mg-9L...

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Abstract

The invention discloses a metal-air battery based on silver-copper catalysis and a preparation method thereof. The metal-air battery comprises a metal anode, an air electrode, electrolyte, a glass fiber diaphragm and a battery shell and is assembled according to a conventional method. The catalyst layer in the air electrode consists of a carbon-free adhesive-free Ag-Cu nano-alloy; the catalyst layer is formed by directly performing electro-deposition of an Ag-Cu alloy layer on foamed nickel; the microstructure of the Ag-Cu alloy refers to spherical nanoparticles; the diameter of the spherical nanoparticles is 200-600 nanometers; small particles which are uniformly distributed are attached to the spherical surface; the atomic ratio of Ag to Cu in the Ag-Cu alloy is (25-75):(75-25); the constituent elements of the Ag-Cu alloy refer to zero-valent Ag and Cu; and the Ag-Cu alloy is a solid solution phase or an L12 phase. The metal-air battery disclosed by the invention can achieve high discharge voltage, good carbon dioxide and seawater corrosion resistance and excellent charge and discharge reciprocating circulation efficiency.

Description

Technical field [0001] The invention relates to the field of metal-air batteries and fuel cells, in particular to a metal-air battery based on a silver-copper dual-function electrocatalyst and a preparation method thereof. Background technique [0002] In recent decades, due to energy and environmental issues, people have paid more and more attention to metal-air batteries with high energy density, such as zinc-air batteries, magnesium-air batteries, aluminum-air batteries, and lithium-air batteries. A metal-air battery generally includes three parts: a metal anode, an electrolyte, and an air electrode. [0003] The zinc-air battery consists of a zinc anode, an alkaline electrolyte and an air electrode. The theoretical specific energy of the zinc-air battery is 1352Wh / Kg. Zinc is one of the cheapest metals, has no pollution to the environment, and the discharge products can be recycled, so zinc-air batteries are an ideal green energy source for replacing fossil fuels. [0004] The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M12/06H01M4/86H01M4/88
CPCH01M4/88H01M4/9041H01M12/06
Inventor 陈福义靳亚超
Owner NORTHWESTERN POLYTECHNICAL UNIV
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