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An emergency metal seawater battery for the sea surface

A seawater battery and metal technology, applied in the field of electrochemical power supply, can solve the problems that the cathode of metal/air battery cannot be completely immersed in seawater, it is difficult to ensure that the battery is not submerged by seawater, and it is difficult to meet the requirements of hydrogen evolution, so as to improve the electrode Performance, low cost, high specific energy effect

Active Publication Date: 2021-08-31
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Magnesium or aluminum / air batteries can directly use seawater as the electrolyte, that is, seawater is activated, and the storage life of the non-activated state is as long as more than 20 years, and the battery has good safety, high specific energy and low cost, but the metal / air battery cathode cannot Completely submerged in seawater, otherwise the battery will not work properly
The sea surface environment is complex, it is difficult to ensure that the battery will not be submerged in seawater, which reduces the stability of the battery and limits the use of the battery
The magnesium / water battery directly uses seawater as the cathode fuel. When the battery cathode is submerged by seawater, the magnesium / water battery discharges normally, which can effectively solve the problem of the battery being completely flooded; however, the traditional metal / air battery cathode is difficult to meet the requirements of hydrogen evolution.

Method used

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  • An emergency metal seawater battery for the sea surface
  • An emergency metal seawater battery for the sea surface
  • An emergency metal seawater battery for the sea surface

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Embodiment Construction

[0021] specific implementation plan

[0022] The battery structure of this embodiment is as figure 1 As shown, the battery includes a hollow casing, two cathodes, an anode, and the cathode and anode are separated by a separator. The cathode of the battery is nickel foam or cobalt oxide loaded with 50μg cm -2 Pt bifunctional electrode; battery anode is magnesium alloy; battery separator is PP and PE blend film; battery shell is polymer material ABS. The preparation method of the bifunctional electrode: the nickel foam substrate is placed in the cobalt chloride solution containing 0.1mol / L and the ammonium chloride solution containing 1mol / L, and the current density is 100mA / cm 2 Electrochemical deposition, to obtain particles with a diameter of 0.2-3 μm on the surface of the substrate; take it out and wash it, and perform electrochemical oxidation in a KOH solution with a concentration of 1mol / L. The oxidation method is cyclic voltammetry; the oxidized electrode is placed in ...

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Abstract

The invention is an emergency power supply, specifically, a metal / seawater battery. The battery has the characteristics of both metal / water battery and metal / air battery. The battery mainly includes a dual-function cathode, an alloy anode, a diaphragm and a battery case. The battery structure is a "sandwich" configuration, with two cathodes sandwiching an anode, the electrodes are separated by a separator, and the battery case is a hollow structure. The invention effectively combines the advantages of the metal / water battery and the metal / air battery. When the battery is floating on the sea surface, the metal / air battery and the metal / water battery are used for dual-mode discharge, and when the battery is full of seawater, the metal / water battery mode is used. Discharge, the dual-mode battery can effectively cope with the complex working environment on the sea. The battery has long storage life, good stability, high mass specific energy and simple structure, and is an ideal sea surface emergency power supply.

Description

technical field [0001] The invention belongs to the technical field of electrochemical power sources, and in particular relates to a magnesium alloy or aluminum alloy anode, a cathode with an oxygen reduction active transition metal oxide or a noble metal catalyst loaded on a nickel foam substrate with hydrogen evolution catalytic activity, and An emergency metal / seawater battery with seawater or oxygen in air as the cathode fuel. Background technique [0002] The marine emergency device is the guarantee for the safety of personnel at sea. The positioning and rescue system can effectively reduce the time and difficulty of search and rescue, and improve the success rate of search and rescue. The power supply of the positioning and emergency system is the guarantee of its normal operation. The power supply with long storage life, good stability, high safety, high specific energy and low cost is one of the core components of the system. [0003] Metal / air batteries, especially...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M6/34
Inventor 王二东刘乾锋孙公权
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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