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Flexible magnesium water battery

A magnesium water battery and flexible technology, applied in the field of electrochemistry, can solve the problems of increasing the design and application of marine instruments and equipment, difficult to meet the power supply requirements of marine equipment, reducing the specific energy of the battery volume, etc., and achieve easy structural design, simple structure, and guaranteed The effect of mass specific capacity

Active Publication Date: 2017-06-27
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Abstract
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  • Claims
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Problems solved by technology

When the concentration of dissolved oxygen in seawater decreases, the performance of the battery drops rapidly, making it difficult to meet the normal power supply requirements of marine equipment
On the other hand, traditional magnesium seawater batteries need a relatively fixed and transparent structure in order to meet the structural strength and the continuous renewal of seawater, which increases the battery volume and reduces the volume specific energy of the battery. The design and application of equipment increases the difficulty

Method used

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Embodiment

[0024] A flexible magnesium-water battery, including an anode, a diaphragm, a cathode and a fixed heat-shrinkable tube capsule; the anode is a magnesium amalgam, wherein the mass content of magnesium accounts for 94% of the alloy mass; the battery structure is a "sandwich" shape: The diaphragm wraps the anode piece, the thickness of the magnesium amalgam of the anode piece is between 0.05mm-1.5mm, the two cathodes clamp the anode up and down, and then wrap the cathode with a heat shrinkable tube with certain holes; the diaphragm is a polymer non-woven porous The membrane has a pore size of 0.1um, and the batteries are connected in parallel; the cathode is nickel foam loaded with a nickel sulfide catalyst, and the catalyst is deposited on the nickel foam by chemical deposition or electrodeposition. When installing the battery, in order to ensure the normal operation of the battery, first slowly curl the battery along the long axis direction, and curl the battery several times, t...

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Abstract

The invention relates to a magnesium water battery, particularly a magnesium water semi-fuel cell which is used in seawater and has a certain flexibility. The battery comprises an anode, a diaphragm, a cathode and an elastic saccular tube of a stationary battery. The single battery structure is in a sandwich form: a diaphragm is wrapped outside the anode strip, the anode is sandwiched by two cathodes and wrapped by the saccular tube with certain holes; the batteries are connected in parallel or in series or in a series-parallel connection mode; the anode is a magnesium-mercury alloy with a certain flexibility; the cathode is a catalyst-carried foam material; the diaphragm is a polymer non-woven porous membrane material; and the electrolyte is seawater which flows into the battery from the outside when the battery operates. The operating principle of the battery is as follows: the anode magnesium loses electrons to form magnesium ions which are diffused into the electrolyte, and the electrons are transferred to the cathode through a wire and react with water to generate hydrogen. The magnesium water battery is simple in structure. The battery has a certain flexibility, and thus, has the advantages of wider applicability and greater application convenience.

Description

technical field [0001] The invention belongs to the technical field of electrochemistry, and specifically relates to a flexible magnesium-water battery using metal magnesium or a magnesium alloy as an anode, a carrier loaded with a hydrogen evolution catalyst as a cathode, and water as a cathode reactant. Background technique [0002] Ocean development and utilization are of great strategic significance to my country's national sovereignty, economic construction and national security. With the continuous advancement of science and technology, our country's understanding of the ocean has been greatly improved. The all-round exploration of the deep sea and the open sea puts forward higher requirements on the existing marine instruments and equipment, such as increasing the working depth of diving and prolonging the working time. The power supply is an important part of meeting the above requirements of marine instrumentation equipment. However, due to the limitation of actua...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/46H01M4/06H01M6/34
CPCH01M4/06H01M4/46H01M4/466H01M6/34
Inventor 孙公权刘乾锋王二东
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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