High-capacity metal-ion battery organic electrode material, preparation method and application thereof
A metal ion and organic electrode technology, applied in the field of high-capacity metal-ion battery organic electrode materials and their preparation, can solve the problems of low capacity of electrode materials and the like
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Embodiment 1
[0025] A high-capacity metal ion battery organic electrode material, which is an organic conjugated compound containing hexaazabenzene and quinoid functional groups, the organic conjugated compound contains multiple redox active sites, and has a high theoretical specific capacity (Theoretical capacity is greater than 500mAh g -1 ), thereby increasing the energy density of the electrode material.
[0026] The conjugated organic electrode material has multiple electrochemical redox active sites, which can perform multiple electron transfer and charge storage, which is beneficial to improve the specific capacity of the organic material; the π-conjugated structure of the molecule is conducive to the rapid transfer of electrons, improving the The rate performance of the material; thereby solving the technical problems of low capacity and poor rate performance of organic materials in the prior art as electrode materials for zinc ion batteries.
[0027] The above-mentioned organic c...
Embodiment 2
[0031] A method for preparing a high-capacity metal-ion battery organic electrode material as described in Embodiment 1, comprising:
[0032] S1, using cyclohexanone and 2,3-diamino-quinoid compound as raw materials, dehydration and condensation at high temperature in an acidic solvent to obtain an intermediate product;
[0033] S2, the intermediate product is oxidized at a high temperature in a nitric acid solution to obtain the desired organic electrode material for a metal ion battery.
[0034] The conjugated organic electrode material prepared by the method is simple and reliable, the synthetic raw materials are cheap, environmentally friendly, can be synthesized on a large scale, and has broad commercialization prospects.
[0035] Preferably, in the above S1, the 2,3-diamino-quinone compound is 2,3-diamino-1,4-naphthoquinone, 2,3-diaminobenzo[g]quinoxaline-5,10 -diketone or 2,3-diamino-1,4,5,8-naphthalenetetraone; the acidic solvent is a mixed solution of acetic acid and...
example 1
[0038] Example 1: Conjugated organic electrode material I, the synthesis of which is shown in the following routes 1) and 2):
[0039]
[0040] 10 g of 2,3-dichloro-1,4-naphthoquinone was dissolved in 200 mL of acetonitrile (ACN), and 16.5 g of potassium phthalimide was added. The reaction mixture was stirred and refluxed under a nitrogen atmosphere for 12 h, cooled to room temperature, and the obtained yellow solid was collected by suction filtration, washed with acetonitrile and deionized water for several times, and dried under vacuum. The above dry yellow solid was transferred to a round-bottomed flask, 50 mL of hydrazine hydrate was added to the flask, and the mixture was stirred at 60° C. for 6 h. After cooling to room temperature, the dark brown powder was obtained by filtration, which was further purified by ethanol recrystallization to obtain 2,3-diamino-1,4-naphthoquinone.
[0041] 0.4 g of cyclohexanone was dissolved in an acetic acid / ethanol (volume ratio of 1:...
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