Foamed iron electrode and preparation method thereof

An iron electrode, foaming technology, applied in the field of iron electrodes, can solve the problems of large distance between active material and current collector steel strip, complicated preparation process of pocket iron electrode, low utilization rate of active material, etc., and achieve high current discharge capacity. The effect of strengthening, reducing the contact resistance, and improving the utilization rate of active materials

Active Publication Date: 2012-08-01
河南创力新能源科技股份有限公司
View PDF9 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the preparation process of this bag-type iron electrode is complicated, and the investment in equipment is large. Due to the large distance between the active material and t

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A foamed iron electrode, comprising a foamed nickel base and an active material coated in the foamed nickel base, the foamed nickel base is made of a foamed sponge that is electroplated with nickel and then burnt off the sponge. The described The active material is made of 90 grams of ferric oxide, 8 grams of additives, and 2 grams of binders; the additives are at least one of nickel sulfate, nickel hydroxide, and rare earth oxides, and the binders are HPMC, CMC, and PTFE at least one of emulsions.

[0021] A method for preparing the foamed iron electrode, the preparation method comprising the steps of:

[0022] Step 1: Evenly mix 90 grams of ferric oxide and 8 grams of additives, then add 40 grams of an aqueous binder solution with a mass concentration of 5% prepared by a binder with a weight of 2 grams, stir evenly, and prepare an active Material slurry;

[0023] Step 2: coating the active material slurry in step 1 on the foamed nickel substrate, and then drying the...

Embodiment 2

[0034] A foamed iron electrode, comprising a foamed nickel base and an active material coated in the foamed nickel base, the foamed nickel base is made of a foamed sponge that is electroplated with nickel and then burnt off the sponge. The described The active material is made of 95 grams of ferric oxide, 3 grams of additives, and 2 grams of binders; the additives are at least one of nickel sulfate, nickel hydroxide, and rare earth oxides, and the binders are HPMC, CMC, and PTFE at least one of emulsions.

[0035] A method for preparing the foamed iron electrode, the preparation method comprising the steps of:

[0036] Step 1: Mix 95 grams of ferric oxide and 3 grams of nickel hydroxide evenly, then add 40 grams of an aqueous binder solution with a mass concentration of 5% prepared by a binder with a weight of 2 grams, stir evenly, and prepare into active substance slurry;

[0037] Step 2: coating the active material slurry in step 1 on the foamed nickel substrate, and then ...

Embodiment 3

[0048] A foamed iron electrode, comprising a foamed nickel base and an active material coated in the foamed nickel base, the foamed nickel base is made of a foamed sponge that is electroplated with nickel and then burnt off the sponge. The described The active material is made of 93 grams of ferric oxide, 6 grams of additives, and 1 gram of binder; the additives are at least one of nickel sulfate, nickel hydroxide, and rare earth oxides, and the binders are HPMC, CMC, and PTFE at least one of emulsions.

[0049] A method for preparing the foamed iron electrode, the preparation method comprising the steps of:

[0050] Step 1: Evenly mix 93 grams of ferric oxide and 6 grams of additives, then add 20 grams of an aqueous binder solution with a mass concentration of 5% prepared by a binder with a weight of 1 gram, stir evenly, and prepare an active Material slurry;

[0051] Step 2: coating the active material slurry in step 1 on the foamed nickel substrate, and then drying the fo...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a foamed iron electrode and a preparation method thereof. The foamed iron electrode consists of a foamed nickel matrix which is formed by electroplating nickel on foamed sponge and burning and removing the sponge, and slurry coated in the foamed nickel matrix, wherein the slurry consists of the following components in percentage by weight: 90 to 95 percent of ferric oxide, 3 to 8 percent of additive and 1 to 2 percent of adhesive. The preparation method comprises the following steps of: uniformly mixing the components according to the ratio to prepare the slurry, coating the slurry into the foamed nickel matrix and drying the foamed nickel matrix until the weight is constant; placing the foamed nickel matrix into a high-temperature furnace with the temperature of 800 DEG C; feeding ammonia into the furnace to reduce the ferric oxide into ferroferric oxide; and pressing, stamping and spot-welding to form tabs, and thus obtaining a foamed iron electrode plate. The method is easy to operate and low in cost; and the prepared foamed iron electrode active substance is high in utilization rate, high in high-current discharging capacity and suitable for nickel-iron batteries capable of discharging at high rate.

Description

technical field [0001] The invention relates to the field of iron electrodes, in particular to a foamed iron electrode for high-rate discharge iron-nickel batteries and a preparation method thereof. Background technique [0002] At the end of the 19th century and the beginning of the 20th century, JUNJER in Europe and EDISON in the United States invented the iron-nickel battery, which is a battery with an iron electrode as the negative electrode and nickel oxyhydroxide as the positive electrode. Because the iron electrode can withstand overcharge and overdischarge, long-term discharge state shelving and other electrical performance abuse, and the iron electrode has a long service life, the cycle life can reach more than 2000 times, and the service life is more than 20 years, and because the iron electrode uses iron as the Active materials, compared with cadmium-nickel batteries, cadmium and lead materials used in the negative electrode of lead-acid batteries, do not constitu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H01M4/66H01M4/24H01M4/26
CPCY02E60/124Y02E60/10
Inventor 李永创李群杰杨玉锋李喜歌
Owner 河南创力新能源科技股份有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap