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Electrolytic manganese dioxide for doped modified lithium manganese dioxide buttery

A technology of electrolytic manganese dioxide and lithium manganese dioxide, applied in battery electrodes, lithium storage batteries, secondary batteries, etc. Effects of chemical polarization, enhanced electrochemical activity, improved discharge capacity and large load capacity

Inactive Publication Date: 2005-05-25
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the main performance of the battery is somewhat different from that of similar foreign products, and other technological levels are not much different. The lithium manganese dioxide electrochemical system battery in the prior art is easy to polarize, and the electrochemical activity of a single manganese dioxide is not high.

Method used

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  • Electrolytic manganese dioxide for doped modified lithium manganese dioxide buttery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A doped modified lithium manganese dioxide battery electrolytic manganese dioxide, which consists of γ-MnO 2 , V 2 o 5 , SiO 2 and Bi 2 o 3 Composition, for the γ-MnO 2 Powder mixed with non-metallic oxide V 2 o 5 , SiO 2 and Bi 2 o 3 , the weight percent of each component is V 2 o 5 1.25%, SiO 2 5%, Bi 2 o 3 3%, γ-MnO 2 90.75%; after mixing, use a 500°C forced air drying oven to process at 375°C for 24 hours to obtain the product.

[0023] The electrolytic manganese dioxide used for the doped modified lithium manganese dioxide battery was assembled into a CR123A experimental battery according to the production process requirements of the prior art CR123A battery, and a blank comparison was made to the production of normal modified electrolytic manganese dioxide, as shown in Table 1.

[0024] Part of the production process of the existing CR123A battery is as follows:

[0025] 1. Process flow, such as figure 1 shown.

[0026] 2. Manganese dioxide heat...

Embodiment 2

[0039] A doped modified lithium manganese dioxide battery electrolytic manganese dioxide, which consists of γ-MnO 2 , V 2 o 5 , SiO 2 and Bi 2 o 3 Composition, for the γ-MnO 2 Powder mixed with non-metallic oxide V 2 o 5 , SiO 2 and Bi 2 o 3 , the weight percent of each component is V 2 o 5 2.5%, SiO 2 0.12%, Bi 2o 3 5.7%, γ-MnO 2 91.68%; after mixing, process it in a 500°C blast drying oven at 375°C for 24 hours to obtain a product—doped modified lithium manganese dioxide electrolytic manganese dioxide for batteries.

[0040] The product was assembled into CR123A experimental battery according to the production process requirements of the prior art CR123A battery, and the testing conditions of the battery are shown in Table 2.

[0041] Doped modified lithium manganese dioxide battery for electrolytic dioxygen

Embodiment 3

[0043] A doped modified lithium manganese dioxide battery electrolytic manganese dioxide, which consists of γ-MnO 2 , V 2 o 5 , SiO 2 and Bi 2 o 3 Composition, for the γ-MnO 2 Powder mixed with non-metallic oxide V 2 o 5 , SiO 2 and Bi 2 o 3 , the weight percent of each component is V 2 o 5 12.5%, SiO 2 0.3%, Bi 2 o 3 0.03%, γ-MnO 2 97.17%; after mixing, use a blast oven at 500°C at 375°C for 24 hours to obtain a product—doped modified lithium manganese dioxide electrolytic manganese dioxide for batteries.

[0044] The product was assembled into CR123A experimental battery according to the production process requirements of the prior art CR123A battery, and the testing conditions of the battery are shown in Table 3.

[0045] Doped modified lithium manganese dioxide battery for electrolytic dioxygen

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Abstract

This invention refers to cell industrial material, a doping modified electrolytic manganese dioxide containing gamma-MnO2 for lithium manganese dioxide cell, which is doped with any kind or more than any two kinds among 0.3-12.5 % of V2O5, 0.12-10.0 % of SiO2 and 0.01-6.0 % of Bi2O3 through mixing calcinations to obtain said material which can raise manganese dioxide electrochemistry activity, reduce electrochemical polarization and raise discharge capacity of cell.

Description

technical field [0001] The invention relates to a battery industrial material, in particular to a doped modified lithium manganese dioxide electrolytic manganese dioxide battery. Background technique [0002] The electrical performance of the lithium manganese dioxide electrochemical system battery mainly depends on the cathode material manganese dioxide, especially the large load discharge performance and discharge capacity of the battery. In the existing technology, manganese dioxide after direct electrolysis is modified by high-temperature calcination and then put into production. [0003] At present, the main performance of the battery is somewhat different from that of similar foreign products, and other technological levels are not much different. The lithium manganese dioxide electrochemical system battery in the prior art is easy to polarize, and the electrochemical activity of a single manganese dioxide is not high. Contents of the invention [0004] The technica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/50H01M10/36
CPCH01M4/36H01M4/505H01M10/052Y02E60/10
Inventor 王圣平代江华杨问华
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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