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High-capacity iron electrode material

An iron electrode, high-capacity technology, applied in battery electrodes, alkaline storage battery electrodes, circuits, etc., can solve the problem of low utilization of iron electrode active materials and achieve high capacity

Active Publication Date: 2010-02-10
宝生集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of low utilization rate of iron electrode active materials, and provide a high-capacity iron electrode material with a capacity of more than 400mAh / g, without adding precious metals, and without heavy metal pollution

Method used

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  • High-capacity iron electrode material

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Embodiment

[0008] Embodiment: the chemical composition of high-capacity iron electrode material of the present invention is:

[0009] Fe prepared as above 3 o 4 The content is 88-92%, the content of yttrium oxide is 3-5%, the content of saturated nickel sulfate solution is 1-3%, and the content of graphite powder is 2-5%.

[0010] The preparation method of iron electrode is: (1) take a certain amount of Fe 3 o 4 , by Fe 3 o 4 The amount of 3-5% yttrium oxide is added. (2) Add 1-3% nickel sulfate saturated solution and 2-5% graphite powder into the dry powder. (3) adding a certain amount of concentration is 5-10% PVA binder, after stirring evenly, the slurry is coated on the negative electrode current collector (the current collector is foamed nickel, foamed iron or nickel-plated perforated steel strip A sort of). (4) After the electrode is dried, the electrode is pressed into shape with a pressure of 24 MPa on a hydraulic press.

[0011] Charge-discharge test of the iron electro...

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Abstract

The invention provides a high-capacity iron electrode material, which is characterized by consisting of an active matter and an additive. The active matter is iron or a compound of iron and comprisesone or more of Fe3O4, Fe(OH)2, Fe(OH)3, Fe2O3, reduced iron powder, and carbonyl iron powder; and the additive comprises 1) 1 to 10 percent of rare earth oxides and 2) 1 to 3 percent of nickel hydroxide or saturated nickel sulfate solution, wherein the rare earth oxides comprise one or more of La2O3, CeO2, Nd2O3, Pr2O3, Y2O3, Gd2O3, Sm2O3 and the like. The iron electrode material has the advantages that: 1) poisonous heavy metals (such as Hg, Cd, Pb and the like) are not added, so that the iron electrode material is an environmental protection type electrode material; 2) precious metals (suchas In, Ga and the like) are not added, so the cost of the iron electrode material is extremely low; and 3) the capacity of the active matter of the electrode exceeds 400mAh / g. The material is used formanufacturing high-energy environment-protecting iron-nickel batteries.

Description

technical field [0001] The invention relates to an iron electrode material, in particular to a high-capacity iron electrode material, which is used to manufacture high-energy and environment-friendly iron-nickel batteries. Background technique [0002] The iron-nickel battery was invented by Edison in 1900. Between 1910 and 1960, iron-nickel batteries were widely used in traction locomotives as power sources. However, after 1960, people's research on iron-nickel batteries has decreased, mainly because nickel-cadmium batteries have better performance than nickel-iron batteries. With the continuous progress of society, people's requirements for environmental protection are getting higher and higher. The original heavy metal-polluted nickel-cadmium batteries and lead-acid batteries will be replaced by environmentally friendly batteries. Iron-nickel batteries just meet this requirement. . [0003] The iron-nickel battery is a green and environmentally friendly secondary batte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/62H01M4/24H01M4/36H01M10/26
CPCY02E60/12H01M4/624H01M4/38H01M4/48Y02E60/10
Inventor 陶明大何秀能潘唯
Owner 宝生集团有限公司
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