Anode material for alkaline zinc-manganese dry battery and alkaline zinc-manganese dry battery

A zinc-manganese dry battery and positive electrode material technology, which is applied to the electrodes of primary batteries, battery electrodes, electrode carriers/collectors, etc., can solve problems such as personal injury and property, failure to open normally, battery explosion, etc. The effect of reducing the boundary resistance and reducing the contact resistance

Active Publication Date: 2021-01-26
SICHUAN CHANGHONG NEWENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But when the temperature of the battery is too high, the nylon material used in the sealing ring 3 will soften and deform, and the safety valve 9 will be tightly attached to the negative terminal 2 due to softening and deformation. If it cannot be opened normally, it will cause the battery to explode easily, causing personal injury and property damage

Method used

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  • Anode material for alkaline zinc-manganese dry battery and alkaline zinc-manganese dry battery
  • Anode material for alkaline zinc-manganese dry battery and alkaline zinc-manganese dry battery
  • Anode material for alkaline zinc-manganese dry battery and alkaline zinc-manganese dry battery

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preparation example Construction

[0038]Therefore, preferably, the method for preparing the positive electrode material of the alkaline zinc-manganese dry battery includes the following steps:

[0039]Mix the electrolytic manganese dioxide and barium titanate uniformly. After ball milling in a ball mill, they are then mixed with the positive electrode conductive material, binder, and potassium hydroxide aqueous solution. After uniform mixing, they are pressed, granulated and sieved in sequence. Immediately.

[0040]In order to facilitate the mutual embedding of manganese dioxide crystals and barium titanate crystals, the present invention controls the ball-to-material ratio of ball milling to be 5-25:1, the rotating speed is 120-200rpm, and the ball-to-material ratio is 0.5-2.5h; It is the ratio of the mass of the grinding body and the material in the ball mill.

[0041]Using the positive electrode material of the alkaline zinc-manganese dry battery provided by the invention to prepare the alkaline zinc-manganese dry battery...

Embodiment 1

[0060]The preparation of the alkaline zinc-manganese dry battery in this embodiment includes the following steps:

[0061]A. After fully mixing 160 parts by mass of the positive electrode active material electrolytic manganese dioxide and 0.02 parts by mass of barium titanate, add them to the ball mill for ball milling, and control the ball-to-battery ratio of the ball mill to 15:1 and the speed to be 180rpm. The ball milling time is 1h; the ball milled mixture is taken out and mixed with 10 parts by mass of positive electrode conductive material graphite, 0.9 parts by mass of adhesive (HA1681), 4 parts by mass of potassium hydroxide aqueous solution (mass concentration of 40%) Fully mix in the mixer, and after uniform mixing, press tablets, granulate and sieving in sequence to prepare the positive electrode material of the alkaline zinc manganese dry battery, and press the positive electrode material into the positive electrode ring 7;

[0062]B. Insert the positive electrode ring 7 into...

Embodiment 2

[0065]The alkaline zinc-manganese dry battery of this embodiment, except in step A, the positive electrode active material electrolytic manganese dioxide, the positive electrode conductive material graphite, the binder (HA1681), the potassium hydroxide aqueous solution (the mass concentration is 40%), and the barium titanate by mass The ratio was 160:10:0.9:4:0.18, and it was prepared by the same method as in Example 1.

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Abstract

The invention discloses a cathode material of alkaline zinc-manganese dioxide dry cells and alkaline zinc-manganese dioxide dry cells, and belongs to the field of chemical power supplies. The invention aims at solving a technical problem that is providing the cathode material of novel alkaline zinc-manganese dioxide dry cells and alkaline zinc-manganese dioxide dry cells containing the cathode material. The cathode material of alkaline zinc-manganese dioxide dry cells comprises the following components in parts by mass: 120-180 parts of electrolytic manganese dioxide, 8-14 parts of a cathode conductive material, 0.5-1.2 parts of a bonding agent, 3.5-6 parts of an aqueous solution of potassium hydroxide, and 0.02-9 parts of barium titanate. The alkaline zinc-manganese dioxide dry cells employ the cathode material of the alkaline zinc-manganese dioxide dry cells to prepare battery cathodes. Barium titanate is added into the cathode manufacture process of the alkaline zinc-manganese dioxide dry cells, continuous rise of cell short circuit temperature is blocked, and at the same time, addition of barium titanate does not induce reduction of discharge performance of cells; the alkalinezinc-manganese dioxide dry cells have the characteristics of high efficiency, high safety, and high stability.

Description

Technical field[0001]The invention relates to the field of chemical power sources, in particular to a positive electrode material of an alkaline zinc-manganese dry battery and an alkaline zinc-manganese dry battery.Background technique[0002]Alkaline zinc-manganese dry battery has the advantages of high specific energy, moderate price, environmental protection, etc., and is one of the most widely used battery types, especially in the field of civilian batteries. It has a very high market share. With the rapid development of portable electrical appliances and social economy, people have put forward higher requirements for the safety of primary batteries for portable electrical appliances.[0003]With the intensified competition in the alkaline manganese battery market, the discharge performance of alkaline zinc manganese dry batteries of various brands in the market has been rapidly improved, especially in terms of high power and large current discharge performance. However, the improve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/505H01M4/485H01M4/66H01M4/62H01M4/06H01M4/04
CPCH01M4/04H01M4/06H01M4/485H01M4/505H01M4/62H01M4/66
Inventor 袁胜平左晓伟王胜兵王琦
Owner SICHUAN CHANGHONG NEWENERGY TECH
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