CN101986454B

CN101986454B - Zinc high-iron alkaline battery

Info

Publication number: CN101986454B
Application number: CN201010500516.4A
Authority: CN
Inventors: 张雅静
Original assignee: Individual
Current assignee: Tongxiang Levi New Materials Co Ltd
Priority date: 2010-10-06
Filing date: 2010-10-06
Publication date: 2015-12-02
Anticipated expiration: 2030-10-06
Also published as: CN101986454A; CN105070909A; CN105070909B

Abstract

The zinc high-iron alkaline battery is provided according to the characteristic that the aqueous solution system of the chemical power supply of the anode material of the high-iron battery can only be concentrated strong alkaline aqueous solution; the lithium ion battery comprises a shell, a positive electrode, a negative electrode, alkaline electrolyte and a diaphragm arranged between the positive electrode and the negative electrode; the cathode material is a zinc cathode, the anode material is ferrate, the electrolyte is NaOH or KOH aqueous solution, and the cathode material and the electrolyte consist of: 10-15% of NaOH or KOH aqueous solution electrolyte and 85-90% of positive electrode material consisting of ferrate and magnesium diboride or derivative compounds thereof; the open circuit voltage of the battery is 1.6V-1.65V, the working voltage is 1.2V-1.5V, which is 0.1-0.15V higher than that of the primary battery in the prior art, and the battery has stable discharge, no pollution, safety and excellent performance, and more than 85 percent of discharge time is 1.2-1.5V.

Description

Zinc high-iron alkaline battery

Technical Field

The invention belongs to a battery, in particular to a high-iron alkaline battery.

Background

When the high-iron is used as the anode material of the battery, the electrode reaction is a three-electron reaction, and the potential and the energy of the battery are higher than those of the traditional zinc-manganese battery. Moreover, the material is cheap and has no pollution to the environment, so the material is widely noticed by the electrochemical field.

Ferrate species can yield 3 electrons in the battery reaction and therefore have a relatively high capacity. The theoretical capacity of the lithium ferrate is up to 601Ah/kg. The theoretical capacity of barium ferrate is also 313Ah/kg. The MnO2 capacity was 308Ah/kg. The ferrate is used as a positive electrode material to replace MnO2 in a commercial zinc-manganese battery, so that the high-iron primary battery can be formed. The battery reaction is as follows:

MFeO4+3/2Zn→1/2Fe2O3+1/2ZnO+MznO2

in the ferroelectric battery, the material which can be used as the negative electrode of the battery is also many, including zinc, aluminum, iron, cadmium, magnesium and the like.

At present, the iron batteries researched at home and abroad comprise high iron and lithium iron, and the high iron batteries are synthesized into stable ferrate (K2 FeO4, baFeO4 and the like) and can be used as the anode material of the high iron batteries to manufacture the high iron batteries with large energy density, small volume, light weight, long service life, greenness and no pollution. The product of ferrate after discharge is FeOOH or Fe2O3-H2O, which is non-toxic, pollution-free and environment-friendly. No recycling is required. Because of the characteristic of ferrate conductivity, the prior art of the high iron battery has the defect of being not mature enough and has not been widely produced and applied.

Disclosure of Invention

The invention aims to: aiming at the defects of the prior art and the poor solubility of ferrate in the anode material of a ferroelectric battery, the aqueous solution system of the chemical power supply with ferrate as the anode material can only be characterized by concentrated strong alkali aqueous solution; a zinc ferric alkaline cell is provided.

The invention relates to a zinc high-iron alkaline battery, which comprises a shell, a positive electrode material, a negative electrode material, an alkaline electrolyte and a diaphragm arranged between the positive electrode and the negative electrode; the cathode material is a zinc cathode, the electrolyte is 6-9mol/L NaOH or KOH aqueous solution, and the cathode material and the electrolyte consist of the following components in percentage by weight: electrolyte: 10-15% of 6-9mol/L NaOH or KOH aqueous solution, 85-90% of anode material and 0-3% of auxiliary material adhesive; the method is characterized in that: the positive electrode material comprises, by weight, 95-99.5% of ferrate and 0.5-5% of magnesium diboride. The ferrate can be one of ferrate mixture of conventional K2FeO4, conventional BaFeO4, conventional K2FeO4 and conventional BaFeO4, and ferrate mixture of conventional ferrate and nano ferrate; the conventional ferrate and the nano ferrate are mixed, wherein the nano ferrate is one of nano materials of BaFeO4 or K2FeO4 or a mixture of BaFeO4 and K2FeO 4. The magnesium diboride is preferably made of nano-grade materials. The magnesium diboride is a superconductor nano-scale material.

The zinc cathode is a zinc cathode formula and a material of an alkaline battery in the prior art.

Compared with the prior art, the invention has the beneficial effects that:

the zinc high-iron alkaline battery has the open circuit voltage of 1.6-1.65V, the working voltage of 1.2-1.5V, 0.1-0.15V higher than that of the primary battery in the prior art, stable discharge, no pollution, safety and excellent performance, and more than 85 percent of discharge time is 1.2-1.5V.

Drawings

The present invention will be further described with reference to the accompanying drawings, but the embodiments of the present invention are not limited thereto.

FIG. 1 is a schematic view of a battery structure

FIG. 2-Battery manufacturing Process flow diagram

In the figure: the device comprises a metal top cap (1), a plastic sleeve (2), a negative electrode (3), a steel shell (4), a metal outer sleeve (5), an isolation layer (6), a positive electrode material ring (7), a negative electrode current collecting column (8), a plastic bottom (9) and a metal bottom cover insulating washer (10).

Detailed Description

The zinc high-iron alkaline battery can be manufactured by adopting the raw materials and products in the prior art.

The zinc high-iron alkaline battery with the aqueous solution system has the same battery structure as the prior art, and is composed of a metal top cap (1), a plastic sleeve (2), a negative electrode (3), a steel shell (4), a metal outer sleeve (5), an isolating layer (6), a positive electrode material ring (7), a negative electrode current collecting column (8), a plastic bottom (9) and a metal bottom cover insulating washer (10) in a combined mode as shown in figure 1.

The process flow of the manufacturing process of the zinc high-iron alkaline battery of the invention is the same as that of the prior art, and is shown in figure 2 (process flow diagram).

In the process flow, the amount of NaOH or KOH aqueous solution for mixing the anode material can be carried out according to the general proportion regulation of the prior art without special control, and can be added by 10-25 percent of the total amount of NaOH or KOH aqueous solution in the formula; the amount of the NaOH or KOH aqueous solution used for mixing the cathode material can be regulated according to the general proportion in the prior art without special control, and can be 5 to 20 percent of the total amount of the NaOH or KOH aqueous solution in the formula. The remaining aqueous NaOH or KOH solution was added for assembly. The auxiliary material adhesive can be common starch, CMC, polyvinyl alcohol and the like in the prior art, and can be controlled within 0-3 percent as required.

The zinc cathode adopts the formula and the material of the alkaline battery zinc cathode in the prior art.

The positive electrode material is prepared by mixing 95-99.5 percent of ferrate and 0.5-5 percent of magnesium diboride by weight percent through ball milling. (the ferrate can be one of ferrate mixture of conventional K2FeO4, conventional BaFeO4, conventional K2FeO4 and conventional BaFeO4, and ferrate mixture of conventional ferrate and nano ferrate, wherein the nano ferrate is nano material of BaFeO4 or K2FeO4 or one of BaFeO4 and K2FeO4, and the magnesium diboride is preferably nano material.

The zinc high-iron alkaline battery is subjected to a discharge test according to the method in the prior art, and the discharge result shows that the open circuit voltage is 1.6V-1.65V, the working voltage is 1.2V-1.5V, the discharge is flat, and more than 85 percent of discharge time is 1.2-1.5V.

Claims

1. A zinc high-iron alkaline battery comprises a shell, a positive electrode material, a negative electrode material, an alkaline electrolyte and a diaphragm arranged between the positive electrode and the negative electrode; the cathode material is a zinc cathode, the electrolyte is 6-9mol/L NaOH or KOH aqueous solution, and the cathode material and the electrolyte consist of the following components in percentage by weight: electrolyte solution: 10-15% of 6-9mol/L NaOH or KOH aqueous solution, 85-90% of anode material and 0-3% of auxiliary material adhesive; the method is characterized in that: the positive electrode material comprises, by weight, 95-99.5% of ferrate and 0.5-5% of magnesium diboride.

2. The zinc ferric alkaline cell of claim 1, wherein: the magnesium diboride is a nano-grade material.