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Cathode material of seawater battery, preparation method thereof, and seawater battery

A positive electrode material, seawater battery technology, applied in the direction of battery electrodes, positive electrodes, submerged batteries, etc., to achieve the effect of cheap materials, low cost, and uniform addition

Active Publication Date: 2018-06-29
CENT SOUTH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conductive polyaniline has been studied as an electrode material for primary dry batteries, secondary batteries, solar cells, fuel cells, etc., but so far there has been no report on its successful use in seawater batteries

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Preparation of conductive polyaniline composite: the concentration of sulfuric acid in the electrolyte is 1 mol / L, the concentration of aniline is 1 mol / L, and the amount of manganese dioxide (nano-scale) added is 12 g / L; the anode and cathode are stainless steel plates to maintain the electrolyte. The temperature is 25°C, and the electrochemical polymerization is used for compounding, and the current density is 20mA / cm 2 , and the deposition time was 30 min.

[0043] The prepared and dried sulfuric acid-doped conductive polyaniline powder was ground for half an hour, and then other additives were added, wherein polyaniline:manganese dioxide (nanoscale):carbon nanotube:polytetrafluoroethylene=8:0.8:0.4: After mixing at a mass ratio of 0.8, it was mixed and ground for 1 hour, and then pressed into a sheet electrode (2cm×2cm) using a press at a pressure of 15MPa, and a stainless steel mesh was used as the current collector to wrap and press it into an integrated electrode...

Embodiment 2

[0045] Preparation of conductive polyaniline composite: the concentration of sulfuric acid in the electrolyte is 1mol / L, the concentration of sodium dodecylbenzenesulfonate is 30g / L, the concentration of aniline is 1mol / L, and the amount of manganese dioxide (nanoscale) added is 12g / L; both the anode and the cathode are stainless steel plates, the temperature of the electrolyte is maintained at 25°C, and electrochemical polymerization is used for compounding, where the current density is 20mA / cm 2 , and the deposition time was 30 min.

[0046] The prepared and dried sulfuric acid / sodium dodecylbenzenesulfonate-doped conductive polyaniline composite powder was ground for half an hour, and the polyaniline composite: manganese dioxide (nanoscale): acetylene black: polyvinyl alcohol = After mixing in a mass ratio of 7:1.5:0.5:1, grind it for 1 hour and press it into a sheet electrode (2cm×2cm) using a press at a pressure of 15MPa, wrap it with a copper mesh as a current collector,...

Embodiment 3

[0048] Preparation of conductive polyaniline composite: the concentration of hydrochloric acid in the electrolyte is 1.5mol / L, the concentration of sulfosalicylic acid is 20g / L, the concentration of aniline is 1.2mol / L, and the addition amount of manganese dioxide (micron level) is 15g / L; both the anode and the cathode are stainless steel plates, the temperature of the electrolyte is maintained at 30 °C, and electrochemical polymerization is used for compounding, where the current density is 10 mA / cm 2 , the deposition time is 20min;

[0049] The prepared and dried hydrochloric acid / sulfosalicylic acid doped conductive polyaniline composite powder was ground for half an hour, and then other additives were added, wherein polyaniline composite: manganese dioxide (micron scale): carbon nanotube: carboxyl Sodium methyl cellulose = 6.8:2:0.4:0.8 mass ratio after mixing, and then mixing and grinding for 1 hour, using a press to press it into a sheet electrode (2cm×2cm) with a force...

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Abstract

The invention discloses a cathode material of a seawater battery, a preparation method thereof, and a seawater battery. The cathode material is composed of conductive polyaniline, a stabilizer, a conductive agent, and a binder. The seawater battery comprises an anode, a cathode, and seawater electrolyte. The anode is composed of the cathode material and a current collector. The cathode is made ofa magnesium alloy. The seawater battery has characteristics of lightness, cheap price, good stability, and environmental friendliness and electrochemical advantages of short activation time, high discharge voltage, large capacity, and great specific energy.

Description

technical field [0001] The present invention relates to a seawater battery positive electrode material and its preparation method and seawater battery, in particular to a positive electrode material with conductive polyaniline as the main active material, and a positive electrode material containing conductive polyaniline active material positive electrode material and a magnesium alloy A seawater battery composed of a negative electrode belongs to the technical field of seawater battery preparation. Background technique [0002] Seawater battery is a kind of activated reserve battery, originally developed in the 1940s, as a power source in applications such as life-saving equipment, marine signs and emergency lights, seawater activated battery has received more and more attention in development and research. Generally speaking, a seawater activated battery consists of three parts, that is, the active metal is the anode (magnesium, aluminum or zinc alloy), the metal chloride...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/60H01M4/62H01M6/34
CPCH01M4/606H01M4/628H01M6/34H01M2004/028
Inventor 邓姝皓袁莉君俆杨明王亚琴刘芬
Owner CENT SOUTH UNIV
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