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Lithium/thionyl chloride(Li/SOCl2) battery containing bromine chloride

A technology of thionyl chloride and bromine chloride, which is applied in the direction of organic electrolyte batteries, battery electrodes, secondary batteries, etc., can solve the problems of battery safety voltage lag, current output capability, voltage lag, etc., and achieve increased working voltage and discharge capacity. Improvement, deposition suppression effect

Inactive Publication Date: 2009-01-14
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conventional Li / SOCl 2 Batteries have safety issues, voltage hysteresis and current output capability issues. If you want to use Li / SOCl 2 The battery replaces the zinc-silver battery as the main power supply, and needs to be further improved or solved Li / SOCl 2 Battery voltage hysteresis and safety issues

Method used

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  • Lithium/thionyl chloride(Li/SOCl2) battery containing bromine chloride
  • Lithium/thionyl chloride(Li/SOCl2) battery containing bromine chloride
  • Lithium/thionyl chloride(Li/SOCl2) battery containing bromine chloride

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0014] With a carbon cathode containing 4% cobalt phthalocyanine as the positive electrode, 1M LiAlCl containing 2M BrCl 4 / SOCl 2 As the electrolyte, the lithium sheet is the negative electrode, and the diaphragm is assembled into an experimental battery with glass fiber.

[0015] Test equipment and conditions:

[0016] The measurement instruments of AC impedance spectrum and polarization curve are: PAPC M283 potentiostat, PARC 1025 spectrum analyzer, supporting software is PAPC M398, the test frequency range of AC impedance is 100.00kHz~50mHz, and the amplitude of AC excitation signal is 5mV; In the experiment, a classic three-electrode system was adopted, the working electrode was a carbon cathode, and the counter electrode and reference electrode were both lithium electrodes. AC impedance measurements are performed at the open circuit potential of the battery.

[0017] The battery discharge experiment was carried out on a blue electric charge and discharge tester.

[0...

example 2

[0020] With a carbon cathode containing 4% phthalocyanine cobalt as the positive electrode, 1M LiAlCl 4 / SOCl 2 +2MBrCl+0.1% cobalt phthalocyanine was used as the electrolyte, the lithium sheet was used as the negative electrode, and the diaphragm was assembled with glass fiber to form an experimental battery. The test equipment and conditions were the same as in Example 1.

[0021] Lithium / thionyl chloride (Li / SOCl 2 ) battery, the discharge capacity of the battery is increased by 22%, and the output voltage is increased by 0.16V.

example 3

[0023] With a carbon cathode containing 4% phthalocyanine cobalt as the positive electrode, 1M LiAlCl 4 / SOCl 2 +2MBrCl+0.3% cobalt phthalocyanine was used as the electrolyte, the lithium sheet was used as the negative electrode, and the diaphragm was assembled with glass fiber to form an experimental battery. The test equipment and conditions were the same as in Example 1.

[0024] Lithium / thionyl chloride (Li / SOCl 2 ) battery, the discharge capacity of the battery is increased by 25%, and the output voltage is increased by 0.16V.

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Abstract

The invention relates to a Li / SOCl2 battery containing BrCl, which adopts a carbon cathode containing cobalt phthalocyanine and uses nickel net as a cathode current collector; electrolyte is LiAlCl4 / SOCl2 solution which contains BrCl; furthermore, 0 to 0.5 percent of cobalt phthalocyanine is added into the electrolyte; lithium sheets with coarse surface are pressed on stainless steel surface and taken as anode. By adding the cobalt phthalocyanine with suitable quantity in the battery carbon cathode and electrolyte, the porosity of the carbon cathode is improved, thus having good restriction effect on the deposition of the LiCl on the surface of the cathode. The discharging capacity of the novel Li / SOCl2 battery containing BrCl is improved by more than 20 percent compared with the normal Li / SOCl2 battery containing BrCl, and the working voltage is improved by more than 0.15V.

Description

technical field [0001] The present invention relates to a kind of lithium / thionyl chloride (Li / SOCl 2 ) battery, particularly a lithium / thionyl chloride (Li / SOCl) containing bromine chloride with high discharge capacity 2 )Battery. Background technique [0002] Lithium / thionyl chloride (Li / SOCl 2 ) battery is currently the battery with the highest specific energy among chemical power sources. It has high working voltage, stable discharge voltage (comparable with zinc-silver battery), high specific energy (mass specific energy is about twice that of the same zinc-silver battery) ), wide operating temperature range (can work in the temperature range of -40°C to +55°C) and long storage life (5 to 10 years). For spacecraft such as satellites, too heavy a primary power supply has always been a constraint factor for reducing the launch weight of the spacecraft and increasing the payload of the satellite. Short-cycle spacecraft such as returnable satellites in my country use zin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M10/40H01M6/16
CPCY02E60/122
Inventor 郭永胜葛红花国瑞峰吴一平周国定
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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