Emergency metal seawater battery applied to sea surface

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

Active Publication Date: 2019-06-18
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Description
  • Claims
  • Application Information

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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

Method used

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  • Emergency metal seawater battery applied to sea surface
  • Emergency metal seawater battery applied to sea surface
  • Emergency metal seawater battery applied to 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 relates to an emergency power supply, in particular to a metal/seawater battery. The battery has the characteristics of a metal/water battery and a metal/air battery at the same time; and the battery mainly comprises double-function cathodes, an alloy anode, diaphragms and a battery shell. The battery structure is of a sandwich configuration, wherein one anode is clamped by two cathodes, electrodes are separated by the diaphragms, and the battery shell is of a hollow structure. According to the battery, the advantages of the metal/water battery and the metal/air battery are combined effectively; when the battery floats on the sea surface, the dual-mode discharging of the metal/air battery and the metal/water battery is adopted; when the battery is fully immersed with seawater, the metal/water battery mode is adopted for discharging; by virtue of the dual-mode battery, a complex working environment of the sea surface can be handled. The battery is long in storage life, high in stability, high in mass specific energy and simple in 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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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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