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Corrosion-inhibiting zinc powder used for alkaline manganese battery and preparation process for corrosion-inhibiting zinc powder

A technology of alkaline manganese battery and zinc powder, which is applied in the direction of battery electrodes, aqueous electrolyte batteries, metal material coating technology, etc., can solve the problems of low adhesion, waste of rare metals, and limited function of rare metals, and achieve surface quality Improve, slow down self-melting, good battery performance

Inactive Publication Date: 2019-05-10
ZHENGJIANG MUSTANG BATTERY CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, rare metals are added in the form of negative electrode zinc paste additives, such as patent CN106159276A, but adding rare metals in this way, because the amount of rare metals attached to the zinc powder is too low, the role of rare metals is limited, and the same effect requires A large amount also causes a waste of rare metals

Method used

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  • Corrosion-inhibiting zinc powder used for alkaline manganese battery and preparation process for corrosion-inhibiting zinc powder
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  • Corrosion-inhibiting zinc powder used for alkaline manganese battery and preparation process for corrosion-inhibiting zinc powder

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Embodiment 1

[0029] The zinc powder used in this embodiment is commercially available, and the particle size can be between 50 mesh and 400 mesh. The sample particle size used in this embodiment is 100 mesh. The applicant of the present invention has found that the lower the mesh number of the zinc powder particle size, the larger the particle size of the zinc powder particle will affect the performance of the zinc powder. The corrosive rare metal film will further reduce the discharge voltage; the higher the mesh number, the smaller the zinc powder particles can be, and more rare metals need to be plated on the zinc powder particles, so that the zinc powder has corresponding corrosion inhibition, thus Longer magnetron sputtering coating time is required, and more rare metal targets are consumed. From the comprehensive consideration of performance and cost, the particle size of zinc powder is preferably 50 mesh to 400 mesh.

[0030] The target material is self-made, and the target material...

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Abstract

The invention discloses corrosion-inhibiting zinc powder used for an alkaline manganese battery and a preparation process for corrosion-inhibiting zinc powder, and the zinc powder contains 0.001-0.2wt% of rare metal, wherein the rare metal is coated onto zinc powder through a magnetron sputtering coating method, the rare metal defines a net-shaped rare metal film on the surfaces of particles of zinc powder; and the rare metal comprises indium (In). rare metal which is harmless on environment is coated through the magnetron sputtering coating method to replace existing common mercury and cadmium, so that corrosion-inhibiting zinc powder, which meets environment-friendly requirements, is free of mercury and cadmium, and is good in battery performance, used for the alkaline manganese batteryis formed.

Description

technical field [0001] The invention relates to the field of battery materials, in particular to a corrosion-inhibiting zinc powder for alkaline-manganese batteries and a preparation process thereof. The corrosion-inhibiting zinc powder can replace mercury and cadmium used in existing battery production. Background technique [0002] Alkaline-manganese batteries are easy to use, safe, and cheap, and are loved by consumers. They are still the most widely used and the largest output of batteries. However, mercury, cadmium and other toxic substances in zinc-manganese battery materials are harmful to human living environment and ecological The environment will cause long-term pollution and harm. [0003] With the increasing awareness of environmental protection, the battery industry has been forced to move towards the direction of green industrialization. China has officially stipulated that the production of batteries with a mercury content higher than 0.0001% of the battery m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/35C23C14/16B22F1/02H01M4/36H01M4/42H01M4/62H01M6/04
Inventor 陈水标孙刚余希
Owner ZHENGJIANG MUSTANG BATTERY CO LTD
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