Cathode of sodium-sulfur cell

A sodium-sulfur battery and negative electrode technology, applied in the field of chemical energy storage, can solve the problems of easy damage, time-consuming and laborious, etc., and achieve the effect of prolonging the service life, ensuring safe operation, and reducing verticality and bottom roundness

Active Publication Date: 2014-01-22
上海电气企业发展有限公司
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  • Application Information

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Problems solved by technology

The negative electrode of the sodium-sulfur battery designed in this way has high requirements for the verticality of the electrolyte ceramic tube 4 and the roundness of the bottom of the

Method used

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  • Cathode of sodium-sulfur cell
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Embodiment Construction

[0017] see figure 2 In order to better understand the technical solution of the present invention, the inventors of the present invention will describe in detail below through specific embodiments in conjunction with the accompanying drawings:

[0018] see figure 2 , a negative electrode of a sodium-sulfur battery of the present invention includes an electrolyte ceramic tube 4 , and a negative electrode chamber 400 is formed in the electrolyte ceramic tube 4 .

[0019] A safety tube 8 and a sodium storage tube 9 are arranged in the negative electrode chamber 400 . The top of the sodium storage tube 9 is welded with the negative electrode sealing cover 11, thereby the sodium storage tube 9 is closed. Safety pipe 8 is sleeved on the outside of sodium storage pipe 9.

[0020] A radially outwardly protruding ceramic insulating ring 3 is fixed on the top surface of the electrolyte ceramic tube 4 , and a negative electrode sealing ring 7 is provided between the negative electro...

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Abstract

The invention discloses a cathode of a sodium-sulfur cell in the field of chemical energy storage. The cathode of the sodium-sulfur cell comprises an electrolyte ceramic tube, wherein a cathode room is formed at the radial inner side of the electrolyte ceramic tube; a ceramic insulated ring which protrudes outwards in a radial manner is arranged at the top surface of the electrolyte ceramic tube; a sodium storage tube and a safety tube sleeved at the outer side of the sodium storage tube are arranged inside the cathode room; the top of the sodium storage tube is sealed through a cathode sealing cover; a cathode sealing ring is arranged between the ceramic insulated ring and the cathode sealing cover to seal the cathode room; a buffer layer which is insulated and does not infiltrate into liquid sodium is arranged between the bottom of the outer wall of the safety tube and the bottom of the inner wall of the electrolyte ceramic tube; a bottom protecting layer which is insulated and does not infiltrate into sulfur and sodium polysulfide is arranged at the bottom of the outer wall of the electrolyte ceramic tube. The cathode of the sodium-sulfur cell has the technical effects that the demands on the verticality and the bottom roundness of the electrolyte ceramic tube are reduced when the bottom of the electrolyte ceramic tube is prevented from participating into reaction.

Description

technical field [0001] The invention relates to a sodium-sulfur battery negative electrode in the field of chemical energy storage. Background technique [0002] Such as figure 1 As shown, the negative electrode of the sodium-sulfur battery includes an electrolyte ceramic tube 4 , and a negative electrode chamber 400 is formed in the electrolyte ceramic tube 4 . The negative electrode chamber 400 is provided with a safety tube 8 and a sodium storage tube 9 , and the safety tube 8 is sleeved on the outside of the sodium storage tube 9 . The bottom of the sodium storage tube 9 is provided with a through hole 91 , and the top of the sodium storage tube 9 and the negative electrode chamber 400 are closed by the negative electrode sealing cover 11 . A ceramic insulating ring 3 protruding radially outward is provided on the top surface of the electrolyte ceramic tube 4 . [0003] The core component of the sodium-sulfur battery is the electrolyte ceramic tube 4, which is made of...

Claims

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Application Information

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IPC IPC(8): H01M10/39H01M4/62
CPCH01M4/02H01M10/3909H01M50/138Y02E60/10
Inventor 龚明光刘宇周日生潘红涛鲍剑明
Owner 上海电气企业发展有限公司
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