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Novel large-volume primary lithium liquid flow storage battery

A storage battery, high-capacity technology, applied in the field of new large-capacity primary lithium liquid flow storage batteries, can solve problems such as poor safety performance and low power density

Inactive Publication Date: 2013-03-06
INST OF PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to address the shortcomings of the above-mentioned battery system, such as low power density and poor safety performance, and propose a new type of large-capacity primary lithium flow storage battery that allows the active material to flow and circulate in a liquid nature.

Method used

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  • Novel large-volume primary lithium liquid flow storage battery

Examples

Experimental program
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Effect test

Embodiment 1

[0040] A new type of large-capacity primary lithium flow storage battery Li-SOCl 2 (Thionyl chloride) system batteries, such as Figure 1a As shown, there is a liquid storage part 1, a reaction part 2 and a fluid drive part 3, and the liquid storage part 1 contains a fluid mixed solution composed of positive electrode active material and electrolyte; the reaction part 2 has a positive electrode 21 and a negative electrode 22, The positive electrode 21 is a composite carbon material positive electrode carrier 24 formed on the current collector 23, the negative electrode 22 is made of an alkali metal and its alloy 25 and a current collector 26, and a channel 27 through which fluid can flow is formed between the positive electrode 21 and the negative electrode 22; The driving part 3 drives the mixed solution to flow through the channel 27 of the reaction part 2 , and electrochemically reacts with the positive electrode 21 and the negative electrode 22 in the channel 25 , and the r...

Embodiment 2

[0048] A new type of large-capacity primary lithium flow storage battery Li-SOCl 2 (Thionyl chloride) system batteries, such as Figure 1b As shown, the difference from Embodiment 1 is that a diaphragm 28 is installed in the channel 25, and the rest of the structure is the same as Embodiment 1.

[0049] In this embodiment, the diaphragm 28 is a non-woven glass fiber diaphragm.

[0050] The discharge test curve diagram of this embodiment is the same as that of Embodiment 1.

Embodiment 3

[0052] A new type of large-capacity primary lithium flow storage battery Li-SO 2 The system simulates the battery, such as Figure 1a As shown, the structure of the device is the same as that of Embodiment 1, and the electrolyte solution of the positive electrode 21, the negative electrode 22 and the liquid storage part 3 used are as follows:

[0053] Negative electrode 22: made by pressing lithium foil on a 50-mesh nickel mesh in a glove box protected by an argon atmosphere.

[0054] Positive electrode 21: Graphite and polytetrafluoroethylene (PTFE) are weighed according to the weight percentage of 8:2, and absolute ethanol is used as a dispersant, and they are stirred and mixed evenly. The mixed slurry is rolled and formed by a rolling machine, and the thickness of the pole piece is 100um. A 50-mesh nickel mesh was used as the current collector 23 and pressed together with the obtained pole piece to form a positive electrode carrier.

[0055] Electrolyte in the storage tan...

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Abstract

The invention relates to a novel large-volume primary lithium liquid flow storage battery. The novel large-volume primary lithium liquid flow storage battery comprises a liquid storage part, a reaction part, and a fluid driving part, wherein the liquid storage part contains a mixed solution, and the mixed solution has liquidity and is constituted by positive active materials and an electrolyte; the reaction part comprises a positive pole and a negative pole, the positive pole is a complex carbon material cathode carrier formed on a current collector, the negative pole is alkali metal or alloy of the alkali metal, and a channel through which fluid can flow is formed between the positive pole and the negative pole; the fluid driving part drives the mixed solution to flow through the channel of the reaction part and generate electrochemical reaction with the positive pole and the negative pole in the channel. The novel large-volume primary lithium liquid flow storage battery is good in high-rate output performance, can be adaptable to large-current-density charging, and is wider in use temperature range. Besides, due to the uninterrupted circulation of the liquid, the radiation effect of the battery is greatly improved, so that the safety performance is guaranteed.

Description

technical field [0001] The invention belongs to the field of battery technology. In particular, it relates to a novel high-capacity primary lithium flow reserve battery. Background technique [0002] With non-aqueous inorganic solvents such as SOCl 2 (thionyl chloride), SO 2 Cl 2 (sulfuryl chloride), POCl 3 (phosphoryl chloride), POFCl 2 (Phosphorus oxychloride) and inorganic electrolyte batteries composed of certain inorganic salts are new high-energy chemical power sources developed in recent years. [0003] In nonaqueous inorganic electrolyte batteries, Li-SOCl 2 (thionyl chloride) battery performance is the best. In 1971, the American GTE company began to develop Li-SOCl 2 (thionyl chloride) batteries. At present, more and more countries are beginning to use this system of batteries. D-type high-rate battery, the discharge current is up to 3A, the voltage is 3.2V, the capacity is 12Ah, and the specific energy is 396Wh / Kg. Li-SOCl 2 (Thionyl chloride) battery ...

Claims

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Application Information

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IPC IPC(8): H01M8/18H01M4/02
CPCY02E60/12Y02E60/528Y02E60/10Y02E60/50
Inventor 胡勇胜索鎏敏李泓陈立泉
Owner INST OF PHYSICS - CHINESE ACAD OF SCI
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