A composite positive electrode for rapidly activating thermal battery and its preparation method

A composite positive electrode and thermal battery technology, applied in the electrodes, battery electrodes, circuits of primary batteries, etc., can solve the problem of increasing activation time, and achieve the effect of reducing activation time, good conductivity, and reducing internal resistance
CN106207213BActive Publication Date: 2018-09-07GUIZHOU MEILING POWER SUPPLY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
GUIZHOU MEILING POWER SUPPLY CO LTD
Publication Date
2018-09-07

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Abstract

The invention relates a composite positive electrode of a rapidly-activated thermal battery and an electrode manufacturing method. The composite positive electrode is mainly manufactured from thermal battery positive electrode powder, heating powder and a wire mesh by physical compression molding, wherein the positive electrode powder is coated with a molten salt electrolyte; the heating powder is 5-60 percent of the positive electrode powder; the wire mesh in an electrode assembly is embedded into a positive electrode layer; and the diameter of the wire mesh is 60-90 percent of a flake diameter. In a process of activating the thermal battery, the heating powder in the composite positive electrode burns, so that a positive electrode coating layer can be activated rapidly; heat transfer intermediate processes can be reduced; and the electrolyte in a diaphragm is directly heated. Moreover, the conductivity of the electrode can be improved through excessive iron in the wire mesh and the heating powder, and rapid voltage buildup is facilitated. The positive electrode has a high molding property and high heat transfer efficiency, and is suitable for a short-time rapidly-activated thermal battery design; and the activation time can be shortened greatly.
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Description

technical field

[0001] The invention relates to the technical field of batteries. The invention relates to a composite positive electrode of a high-activity thermal battery and a preparation method thereof. The technology is mainly applied to rapidly activating a thermal battery in a short time. Background technique

[0002] The thermal battery is a heat-activated reserve battery. It uses molten salt as an electrolyte and uses a heat source to melt and activate a disposable reserve battery. When the thermal battery is working, the internal temperature is 450°C-550°C. It has large output power and short activation time. , long storage life, strong environmental adaptability and so on. Rapid response thermal batteries have shown great advantages in many fields such as deep space exploration, emergency rescue, and system equipment design.

[0003] Throughout the development of thermal battery technology, there are few reports on rapid response thermal battery technology. The ...

Claims

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