Thermal battery cell based on embedded current collector plate composited FexNi<1-x>S2 cathode

Abstract

The invention relates to a thermal battery cell based on an embedded current collector plate composited FexNi<1-x>S2 cathode. An inert current-limiting ring is placed between an anode current collector plate and an embedded current collector plate composited FexNi<1-x>S2 cathode layer and covers a diaphragm layer and an anode layer, wherein the embedded current collector plate composited FexNi<1-x>S2 cathode layer is prepared by pressing an embedded current collector plate and cathode powder FexNi<1-x>S2 through a pressing machine. In the thermal battery cell, by using the inert current-limiting ring outside the diaphragm layer and the anode layer, ignition of the anode of the battery cell during activation of the thermal battery can be prevented and overflowing of the electrolyte and LiBalloy on the anode during operation of the thermal battery is avoided; therefore, the problem of local short-circuit or overall failure of the thermal battery during operation in a severe condition are solved; furthermore, the specific discharge capacity of the cathode is increased.

Description

technical field [0001] The invention belongs to the technical field of thermal battery manufacturing, in particular to a composite Fe battery based on embedded current collectors. x Ni 1-x S 2 Positive thermal battery cell. Background technique [0002] Thermal battery is a heat-activated reserve battery, which can be widely used in weapons due to its advantages of short activation time, high specific energy, high specific power, small self-discharge, long storage time, wide operating temperature range, and resistance to harsh environmental mechanical environments. system. [0003] FeS is the most commonly used cathode material in thermal batteries. 2 , the material has stable electrical properties and is cheap, but has poor thermal stability, and is often used in short-life thermal batteries. CoS 2 Although the thermal stability is better and the conductivity is lower, the stability in the air is poor and the price is higher; NiS 2 Both thermal stability and electric...

AI Technical Summary

Problems solved by technology

However, there is no protection for the electrolyte layer of this single battery, which will cause short circuit of the battery due to electrolyte overflow to the hot battery with long working hours and hot battery with harsh environmental conditions, which has potential safety hazards.

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