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Transition metal phthalocyanine coated phthalocyanine blue/pitch coke activated carbon composite material lithium-thionyl chloride battery positive electrode catalyst and preparation method thereof

A technology for coating phthalocyanine blue and thionyl chloride batteries with phthalocyanine, which can be applied to battery electrodes, circuits, electrical components, etc.

Pending Publication Date: 2022-02-18
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Synthesis of MPc / C (M=Mn 2+ , Fe 2+ ,Co 2+ , Ni 2+ , Cu 2+ ) The method of composite materials is mainly a one-step synthesis method of solid phase or liquid phase, which has the characteristics of short synthesis cycle and simple process, but because the yields of different metal phthalocyanines are quite different, synthesizing multi-component phthalocyanine composite materials It is difficult to accurately control the ratio of each component, so there is an urgent need for a precise synthesis of multi-component MPc (CuPc / C) (M=Mn 2+ , Fe 2+ ,Co 2+ and Ni 2+ ) composite method

Method used

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  • Transition metal phthalocyanine coated phthalocyanine blue/pitch coke activated carbon composite material lithium-thionyl chloride battery positive electrode catalyst and preparation method thereof
  • Transition metal phthalocyanine coated phthalocyanine blue/pitch coke activated carbon composite material lithium-thionyl chloride battery positive electrode catalyst and preparation method thereof
  • Transition metal phthalocyanine coated phthalocyanine blue/pitch coke activated carbon composite material lithium-thionyl chloride battery positive electrode catalyst and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Taking the synthesis of CoPc (CuPc / AC) as an example, the following steps are included:

[0034] Step 1: Take 0.41g of phthalic anhydride and 0.05g of specific surface area of ​​1400m 2 g -1 The pitch coke activated carbon is ground evenly in an agate mortar;

[0035] Step 2: Take 0.60g of urea, 0.06g of ammonium molybdate, and 0.25g of copper chloride dihydrate, add them to the agate mortar in step 1, grind them evenly, and transfer them to the corundum porcelain boat;

[0036] Step 3: Transfer the corundum porcelain boat from step 2 into the muffle furnace, -1 The heating rate is increased from room temperature to 140°C and kept for 1.0h; then at 10°C·min -1 The heating rate was increased to 270°C, kept for 2 hours, and then naturally cooled to room temperature to obtain the initial product;

[0037] Step 4: Rinse the initial product of step 3 with deionized water for 10 hours, pour off the impurities in the upper layer, repeat 5 times, and then filter with ethano...

Embodiment 2

[0042] Taking the synthesis of CoPc (CuPc / AC) as an example, the following steps are included:

[0043] Step 1: Take 1.60g of phthalic anhydride and 0.20g of specific surface area of ​​2400m 2 g -1 The pitch coke activated carbon is ground evenly in an agate mortar;

[0044] Step 2: Take 2.20g of urea, 0.05g of ammonium molybdate, and 1.00g of copper chloride dihydrate, add them to the agate mortar in step 1, grind them evenly, and transfer them to the corundum porcelain boat;

[0045] Step 3: Transfer the corundum porcelain boat from step 2 into the muffle furnace, -1 The heating rate is increased from room temperature to 130°C and kept for 1.5h; then at 10°C·min -1 The heating rate was increased to 250°C, kept for 2 hours, and then naturally cooled to room temperature to obtain the initial product;

[0046] Step 4: Rinse the initial product of step 3 with deionized water for 24 hours, pour off the impurities in the upper layer, repeat 3 times, and then filter with ethano...

Embodiment 3

[0051] Taking the synthesis of CoPc (CuPc / AC) as an example, the following steps are included:

[0052] Step 1: Take 0.82g of phthalic anhydride and 0.10g of specific surface area of ​​2000m 2 g -1 The pitch coke activated carbon is ground evenly in an agate mortar;

[0053] Step 2: Take 1.20g of urea, 0.24g of ammonium molybdate, and 0.42g of copper chloride dihydrate, add them to the agate mortar in step 1, grind them evenly, and transfer them to the corundum porcelain boat;

[0054] Step 3: Transfer the corundum porcelain boat from step 2 into the muffle furnace, -1 The heating rate is increased from room temperature to 100°C and kept for 1.0h; then at 8°C·min -1 The heating rate was raised to 200°C, kept for 1.5h, and then naturally cooled to room temperature to obtain the initial product;

[0055] Step 4: Rinse the initial product of step 3 with deionized water for 10 hours, pour off the impurities in the upper layer, repeat 5 times, and then filter with ethanol 3 tim...

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Abstract

The invention discloses a transition metal phthalocyanine coated phthalocyanine blue / pitch coke activated carbon composite material lithium-thionyl chloride battery positive electrode catalyst and a preparation method. The method takes phthalic anhydride, hydrated salt of transition metal M, pitch coke activated carbon and urea as raw materials and ammonium molybdate as a catalyst, and the lithium-thionyl chloride battery positive electrode catalyst is prepared through a two-step method. In the first step, CuPc / AC is prepared by an in-situ solid-phase method so that the production cost is reduced, and the proportion of each component can be accurately controlled in the next-step synthesis process; the surface of pitch coke activated carbon contains rich functional groups and a large number of micropores, CuPc is connected with AC through covalent bonds and rivet effects, agglomeration of CuPc is reduced, and dispersity is improved; and in the second step, the CuPc / AC is coated with MPc prepared by heating in a protective atmosphere by taking the CuPc / AC as a substrate in a manner of pi-pi accumulation and covalent bonds. The method is simple in process, environment-friendly and short in synthesis period. The prepared catalytic material has excellent electrochemical performance.

Description

technical field [0001] The invention belongs to the technical field of batteries, and in particular relates to a transition metal phthalocyanine-coated phthalocyanine blue / pitch coke activated carbon composite material lithium-thionyl chloride battery cathode catalyst and a preparation method. Background technique [0002] Lithium-thionyl chloride battery (Li / SOCl 2 ) belongs to the cathode liquid battery, and the battery uses metallic lithium as the negative electrode; the strong oxidant liquid thionyl chloride is used as the positive electrode active material and the electrolyte solution; the added high-purity lithium tetrachloroaluminate is used as the electrolyte salt to improve the conductivity and Li + Transmission efficiency; a mixture of conductive carbon black and polytetrafluoroethylene is used as the positive electrode. Since the lithium-thionyl chloride battery was invented in 1969, it has been widely used in military and commercial fields because of its high sp...

Claims

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Application Information

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IPC IPC(8): H01M4/90H01M4/88
CPCH01M4/9008H01M4/90H01M4/88Y02E60/50
Inventor 许占位严皓沈学涛李嘉胤王盈张姿纬赵亚泽黄剑锋
Owner SHAANXI UNIV OF SCI & TECH
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