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Free porphyrin, and preparation method and application thereof

A porphyrin, free technology, applied in the field of chemistry, can solve problems such as restricting the use of batteries, achieve good catalytic performance and improve battery performance

Inactive Publication Date: 2013-05-15
NORTHWEST UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

However, the more prominent problem in the discharge process of this type of battery is that the actual output specific energy is much smaller than the theoretical output specific energy due to electrode polarization, which seriously restricts the use of this type of battery.

Method used

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  • Free porphyrin, and preparation method and application thereof
  • Free porphyrin, and preparation method and application thereof
  • Free porphyrin, and preparation method and application thereof

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Embodiment Construction

[0028] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0029] The road map of the preparation method of free porphyrin is as figure 1 shown.

[0030] Structural Characterization of Synthesized Porphyrins and Intermediate Products

[0031] Elemental analyzer (Vario EL-III) (Germany) was used to test the content of C, H, and N elements in the complex, and an ultraviolet-visible spectrometer (UV1800, shimadzu) (Shimadzu International Trading (Shanghai) Co., Ltd.) was used to test the content of porphyrin. UV-Vis spectroscopy with WRS-1 A Digital melting point instrument (Shanghai Physical Optics Instrument Factory) was used to test its melting point, and infrared spectrometer (BEQ UZNDX550-FTIR, KBr tablet) Bruker, (Germany) was used to test the infrared spectrum of the complex. NMR characterization was performed with a superconducting NMR instrument (VARIAN INO...

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Abstract

The invention discloses free porphyrins, and a preparation method and application thereof. A method of modifying simple porphyrin is employed to synthesize three free porphyrins (3a, 3b, 3c), where 3b and 3c are new porphyrins; means of elemental analysis, infrared spectrum, UV-vis spectra and 1H NMR are adopted to characterize the prepared porphyrin compounds containing tailed imidazole. According to a test on catalytic performance of free porphyrins (3a-3b) on a Li / SOCl2 battery, the results show that compared with a bare battery, the above porphyrin compounds prolong discharge time of the Li / SOCl2 battery to different degrees, when the battery discharges to 2V, under conditions of room temperature of 25 DEG and resistance of 40 ohm; and capacity of the battery is increased substantially. Therefore, free porphyrins can affect electron transfer in the electronic Li / SOCl2 battery, so as to affect performance of the battery.

Description

technical field [0001] The invention belongs to the technical field of chemistry and relates to a free porphyrin and its preparation method and application. Background technique [0002] Lithium / thionyl chloride battery is a promising new high-energy chemical power source. The open circuit voltage of the battery can reach 3.65V, and the working voltage is generally around 3.3V, which is the highest among lithium batteries. At the same time, the battery also has many advantages such as high energy density (150w.h / kg), long storage life (~10years), wide operating temperature range (-55~85°C), and long discharge time. Lithium / thionyl chloride battery is currently the battery with the highest specific energy among practically used batteries in the world, so it has been widely researched and applied in oil exploration, marine ship heavy industry, military industry, and medical treatment. However, the more prominent problem in the discharge process of this type of battery is tha...

Claims

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Application Information

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IPC IPC(8): C07D487/22H01M4/60
CPCY02E60/12Y02E60/10
Inventor 李珺苏小琴孙万军姚桂平徐维霞张增奇罗云
Owner NORTHWEST UNIV
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