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Aluminum-based metal-air batteries

An air electrode and battery technology, applied in the direction of organic electrolyte batteries, hybrid batteries, battery electrodes, etc., can solve problems such as complex battery structures

Active Publication Date: 2014-11-26
亚利桑那董事会
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, all of these approaches will result in complex battery structures that will eliminate most of the energy density offered by aluminum

Method used

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  • Aluminum-based metal-air batteries
  • Aluminum-based metal-air batteries
  • Aluminum-based metal-air batteries

Examples

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Embodiment Construction

[0041] One embodiment provides an electrochemical cell comprising: (i) a plurality of electrodes including a fuel electrode comprising aluminum and an air electrode absorbing gaseous oxygen, the electrodes operable in a discharge mode, wherein the aluminum is oxidized at the fuel electrode and oxygen is reduced at the air electrode, and (ii) an ionically conductive medium comprising an organic solvent; wherein during non-use of the cell, the organic solvent will promote said A protective interface is formed between the aluminum and the ionically conductive medium, and wherein at least some of the protective interface will be removed from the aluminum at the start of the discharge mode to thereafter allow oxidation of the aluminum during discharge.

[0042] electrode

[0043] The electrochemical cells described herein can be any type of battery. For example, it may be a primary battery, a secondary battery or a combination thereof. A "primary" cell may refer to a cell in wh...

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Abstract

Provided in one embodiment is an electrochemical cell, comprising: (i) a plurality of electrodes, comprising a fuel electrode that comprises aluminum and an air electrode that absorbs gaseous oxygen, the electrodes being operable in a discharge mode wherein the aluminum is oxidized at the fuel electrode and oxygen is reduced at the air electrode, and (ii) an ionically conductive medium, comprising an organic solvent; wherein during non-use of the cell, the organic solvent promotes formation of a protective interface between the aluminum of the fuel electrode and the ionically conductive medium, and wherein at an onset of the discharge mode, at least some of the protective interface is removed from the aluminum to thereafter permit oxidation of the aluminum during the discharge mode.

Description

[0001] References to related applications [0002] This application claims priority to US Provisional Application Serial No: 61 / 577,490, filed December 19, 2011, which is incorporated herein by reference in its entirety. [0003] Statement of Government Funding [0004] All publications, patents, and patent applications mentioned in this specification are hereby incorporated by reference in their entirety. This invention was made with United States Government support under Contract No. DE-AR-00000038 awarded by the United States Department of Energy. The government has certain rights in this invention. Background technique [0005] Metal-air batteries are well known and include metal fuel electrodes and air electrodes. During discharge, metal fuel is oxidized at the metal fuel electrode and oxygen is reduced at the air electrode. In metal-air cells of the rechargeable (aka "secondary") type, the metal fuel can be reduced at the fuel electrode and oxygen can be evolved by o...

Claims

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Application Information

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IPC IPC(8): H01M12/06H01M12/00H01M10/056H01M6/16
CPCH01M2300/0002H01M12/08H01M2300/0028Y10T29/49108Y02E60/10H01M4/38H01M12/02H01M12/06
Inventor C·A·弗里森J·A·B·马丁内斯
Owner 亚利桑那董事会
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