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Positive electrode of Zn-Mn cell

A zinc-manganese battery and positive electrode technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of poor discharge voltage stability, low battery capacity and high current output capability, and insufficient flat discharge curve, etc., to achieve stable discharge voltage, The effect of capacity increase and discharge curve flattening

Inactive Publication Date: 2005-01-12
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the battery capacity and high current output capability are low, the discharge curve is not flat enough, and the discharge voltage stability is poor

Method used

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  • Positive electrode of Zn-Mn cell
  • Positive electrode of Zn-Mn cell
  • Positive electrode of Zn-Mn cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～4

[0013] figure 1 The discharge curves of the batteries assembled from the positive electrode materials containing different types of fluorinated graphite (with different fluorine content) and the existing positive electrode materials in the present invention are given when the load is 75Ω. Among them, curve A is the existing positive electrode material, and curves A(I), A(III), A(IV), and A(V) respectively represent fluorinated graphite with fluorine content of 15%, 43%, 58%, and 63%. positive electrode material. Obviously, the capacity of the battery adopting the present invention is greatly improved.

Embodiment 5～8

[0015] figure 2 The discharge curves of the batteries assembled from the positive electrode materials containing different types of fluorinated graphite (with different fluorine content) and the existing positive electrode materials in the present invention are given when the load (Load) is 2.8Ω. Among them, curve A is the existing positive electrode material, and curves A(I), A(III), A(IV), and A(V) respectively represent fluorinated graphite with fluorine content of 15%, 43%, 58%, and 63%. positive electrode material. Apparently, the large current output capability of the battery adopting the present invention is obviously increased.

[0016] image 3 Given that the fluorine content of graphite fluoride is 27%, the positive electrode materials with different ratios of manganese dioxide, graphite fluoride, and graphite are assembled into the discharge curve of the battery at 75Ω.

Embodiment 9

[0018] Mix manganese dioxide, graphite fluoride and graphite in a powder mixer at a ratio of manganese dioxide: graphite fluoride: graphite = 1: 0.143: 0.286 to prepare a positive electrode mixture, and make the positive electrode after pressing the ring, using zinc paste Negative electrode, 30% KOH solution as electrolyte solution, cup-shaped alkali-resistant tissue paper as diaphragm, assembled into AAA battery. Discharge curve such as image 3 Middle curve 1.

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Abstract

The present invention relates to a positive electrode of Zn-Mn call and is the composition of the positive electrode of Zn-Mn cell. The positive electrode of Zn-Mn cell consists of MnO2, graphite andcarbon monofluoride in the weight ratio of 1 to 0.0211-0.286 to 0.0316-0.143. The said cell with the positive electrode has great capacity, powerful great current output capacity, flat discharge curve and stable discharge voltage.

Description

(1) Technical field [0001] The invention relates to a positive electrode of a zinc-manganese battery, in particular to the composition and content of the positive electrode material of the zinc-manganese battery. (2) Background technology [0002] The positive electrode material of existing alkaline zinc-manganese battery is made up of manganese dioxide and graphite (see K.V.Kordesch chief editor, " battery pack ", the first volume manganese dioxide, Xia Xi, Yuan Guangyu translates, Light Industry Press, 1981.), According to the mass ratio, its content is manganese dioxide:graphite=1:(0.111~0.0526). The disadvantages are that the battery capacity and high current output capability are low, the discharge curve is not flat enough, and the discharge voltage stability is poor. (3) Contents of the invention [0003] The invention aims to provide a zinc-manganese battery positive electrode with high battery capacity and large current output capability, flat discharge curve and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/50H01M4/58
CPCY02E60/12Y02E60/10
Inventor 董全峰林祖赓尤金跨
Owner XIAMEN UNIV