Preparation method of silicon-based ester compound, silicon-based ester compound, electrolyte containing silicon-based ester compound and secondary battery

Abstract

The invention relates to a preparation method of a silicon-based ester compound, the silicon-based ester compound, an electrolyte containing the silicon-based ester compound and a secondary battery. The preparation method of the silicon-based ester compound comprises the following steps: adding organic alkali and organic acid into a solvent and carrying out reacting to obtain an intermediate, andthen, adding halogenated silane to react with the intermediate to obtain the silicon-based ester compound, wherein the intermediate is ionic liquid. The preparation method provided by the invention can relieve the problems of long reaction time, difficult treatment of byproducts, complex operation caused by step-by-step reaction, high cost, difficult industrial scale-up production and the like inthe existing synthesis method.

Description

technical field [0001] The invention relates to a preparation method of a silicon-based ester compound, a silicon-based ester compound, an electrolyte containing the silicon-based ester compound, and a secondary battery. Background technique [0002] Silicon-based ester compounds have potential application prospects in lithium-ion batteries. In 1967, Von G. Schott and G.Henneberg studied the preparation method and thermal stability of bis(triarylsilyl) oxalate (Liber dieStabilitat von Bis(triorgano-silyl)-oxalaten, Zeitschrift fur anorganische undallgemeine Chemie, 1967, 352, 45-52). In 1980, Hergott et al. reported the synthesis of trialkylsilyl oxalate (Synthesis, 1980, 8, 626–627), which prepared trialkylsilyl oxalate through the reaction of trimethylchlorosilane and oxalic acid, but the The reaction time is as long as 64 hours, and the by-product is HCl; in addition, because the by-product produced by the reaction is HCl, which is difficult to process and purify, it is ...

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Problems solved by technology

In 1980, Hergott et al. reported the synthesis of trialkylsilyl oxalate (Synthesis, 1980, 8, 626–627), which prepared trialkylsilyl oxalate through the reaction of trimethylchlorosilane and oxalic acid, but the The reaction time is as long as 64 hours, and the by-product is HCl; in addition, because the by-product of the reaction is HCl, which is not easy to process and purify, it is easy to corrode metal utensils or equipment, and will also cause pollution to the environment

In 1981, C.Palomo proposed an improved two-step synthesis method (Synthesis, 1981, 10, 809–811). First, it is necessary to synthesize an intermediate through the reaction of trimethylchlorosilane and oxazolidinone, and then use the intermediate and Oxalic acid is reacted; the reaction is divided into two steps, the operation process is complicated, and the cost is also greatly increased

[0003] The above-mentioned preparation method has problems such as long reaction time, difficult to handle by-products or complicated operation and high cost caused by step-by-step reaction.

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