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Positive electrode material of alkali dry battery and preparation method thereof and alkali dry battery

A positive electrode material and dry battery technology, applied in the direction of battery electrodes, primary battery electrodes, circuits, etc., can solve the problems that cannot meet the requirements of digital cameras well, and the performance of high-current and high-power pulses is not satisfactory, and achieve a large improvement. Current constant power discharge performance, improved high power discharge performance, and broad application prospects

Active Publication Date: 2010-06-02
SICHUAN CHANGHONG NEWENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, its high-current and high-power pulse performance is still not satisfactory, and it cannot meet the requirements of digital camera electrical products.

Method used

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  • Positive electrode material of alkali dry battery and preparation method thereof and alkali dry battery
  • Positive electrode material of alkali dry battery and preparation method thereof and alkali dry battery
  • Positive electrode material of alkali dry battery and preparation method thereof and alkali dry battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Preparation and discharge performance test of embodiment 1 common alkaline dry battery

[0026] Fully mix the active ingredient manganese dioxide and conductive graphite at a weight ratio of 120:4~8, then add 3.5% alkaline electrolyte (KOH or NaOH), stir evenly and use 140~280kgf / cm 2 Tablets are pressed under a certain pressure, and then granulated and sieved to form positive electrode particles with a certain particle size distribution. Then, 0.1-0.3% of stearic acid additive is added to the positive electrode particles, and the positive electrode ring is formed by molding. ; First mix sodium polyacrylate and indium compound at a ratio of 40-60:1, and then add it to the alkaline electrolyte (in which the concentration of KOH is 32-42%, and the content of zinc oxide in the negative electrode is 1-5%) to obtain the condensate Colloidal electrolyte solution, then vacuumize and stir zinc powder and gel electrolyte solution at a ratio of 300:130-180, and the obtained collo...

Embodiment 2

[0030] Embodiment 2 Preparation and discharge performance test of alkaline dry battery of the present invention

[0031] A two-component mixed substance composed of barium manganate and manganese dioxide is used to replace the manganese dioxide in Example 1 as the positive electrode active component of the alkaline dry battery, wherein the barium manganate addition is 0.1% of the positive electrode active component, according to the embodiment The method of 1 is used to make the positive electrode ring, and the negative electrode zinc paste to form the alkaline dry battery 2#.

[0032] Perform constant power discharge on 2# alkaline dry battery, and discharge items shall be carried out according to 7.1.5 of the IEC60086-2-2006 standard.

[0033] In a constant temperature environment of 20°C±2°C, take 9 2# batteries and perform 10 cycles of pulse discharge every 1 hour until the closed-circuit voltage drops to 1.05V; the pulse discharge is repeated at a constant power of 1500mW...

Embodiment 3

[0034] Embodiment 3 Preparation and discharge performance test of alkaline dry battery of the present invention

[0035] A two-component mixed substance composed of barium manganate and manganese dioxide is used to replace the manganese dioxide in Example 1 as the positive electrode active component of the alkaline dry battery, wherein the barium manganate addition is 0.5% of the positive electrode active component, according to the embodiment 1 method to make positive ring, and negative zinc paste to form alkaline dry battery 3#.

[0036] Perform constant power discharge on the 3# alkaline dry battery, and the discharge items shall be carried out in accordance with the provisions of 7.1.5 in the IEC60086-2-2006 standard.

[0037] In a constant temperature environment of 20°C±2°C, take 9 3# batteries and perform 10 cycles of pulse discharge every 1 hour until the closed circuit voltage drops to 1.05V; the pulse discharge is repeated at a constant power of 1500mW A cycle of di...

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PUM

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Abstract

The invention relates to a positive electrode material of the alkali dry battery and a preparation method thereof and an alkali dry battery, belonging to the battery field. The technical problem to be solved by the invention is to provide a positive electrode material with low cost of the alkali dry battery and an alkali dry battery. The positive electrode material of the alkali dry battery comprises a positive electrode active ingredient, wherein the positive electrode active ingredient is a mixture of manganese dioxide and a compound with barium or calcium, and the content of the compound with barium or calcium is 0.1-5wt% of the positive electrode active ingredient. The positive electrode material of the invention can increase the high power discharge performance of the alkali dry battery, have low cost and easy promotion and application, provide a new choice for the field and have wide application prospects.

Description

technical field [0001] The invention relates to an alkaline dry battery cathode material, a preparation method thereof and an alkaline dry battery, belonging to the field of batteries. Background technique [0002] With the development of science and technology, the market for digital products such as digital cameras, handheld computers, MDs, and CDs has grown rapidly. Higher requirements are put forward for the high-power discharge performance of batteries. Primary batteries (also known as primary batteries and dry batteries) can meet the needs of portable electrical appliances because of their advantages of convenience, quickness, ready-to-use, and independence from power grids. In response to the requirement of sufficient portability, it has been widely used. [0003] In order to meet the power supply requirements of digital portable devices such as digital cameras, on the one hand, it is actively seeking a new type of primary battery product with excellent high-power ou...

Claims

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Application Information

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IPC IPC(8): H01M4/48H01M4/50H01M4/06
CPCY02E60/12
Inventor 袁胜平王胜兵郭龙雷声钟永泽
Owner SICHUAN CHANGHONG NEWENERGY TECH
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