Battery negative electrode active material based on quinone structure and preparation method and application thereof

Abstract

The invention discloses a battery negative electrode active material based on a quinone structure, and a preparation method and an application of the battery negative electrode active material. The battery negative electrode active material comprises a quinone compound taking the quinone structure as an electrochemical oxidation-reduction reaction site, wherein the quinone compound comprises any one of a benzoquinone sodium salt derivate, an anthraquinone sodium salt derivate, or a naphthoquinone sodium salt derivate. The benzoquinone sodium salt derivate, the anthraquinone sodium salt derivate, or the naphthoquinone sodium salt derivate comprises at least one of the following groups of -ONa, -SO3Na, or -COONa.

Description

technical field [0001] The invention relates to the field of material technology, in particular to a battery negative electrode active material based on a quinone structure and a preparation method and application thereof. Background technique [0002] New energy sources such as solar energy and wind energy have the advantages of being renewable and environmentally friendly, but due to their instability, energy conversion and storage devices are required to improve reliability and utilization when they are connected to the grid. Chemical power sources are one of the most promising energy storage systems, among which lithium-ion batteries have been widely used in portable electronics and electric vehicles due to their high energy density and high voltage. However, the limited reserves of lithium resources and the high cost of purification limit its large-scale use. [0003] Sodium is in the same family as lithium, has similar chemical properties, is abundant in reserves, and...

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Problems solved by technology

[0004] Among carbon anode materials, hard carbon has the largest degree of disorder in the carbon layer, the best sodium storage effect, and a specific capacity of 200-300mAh / g (J Electrochem Soc, 2001, 148, A803), but due to its low sodium storage potential and high rate Poor performance, during fast charging or overcharging, sodium may deposit on the surface to form dendrites, causing safety hazards; alloy materials such as tin, phosphorus and lead, etc., although have high sodium storage capacity, but the first week efficiency is low , poor cycle performance (J Power Sources, 2013, 225, 316-322), which is mainly due to the large volume deformation of the alloy during the process of intercalation and deintercalation of sodium, which leads to structural damage and a rapid decline in sodium storage performance (Angew Chem, 2013, 125, 4731-4734); Na 2 Ti 3 o 7 Such oxide negative electrode materials have poor conductivity, low sodium storage potential, low coulombic efficiency in the first week, and cycle stability needs to be improved (Adv Energy Mater, 2013, 3, 1186-1194); while NaTi 2 (PO 4 ) 3 Although the representative phosphate negative electrode material has high cycle stability, its high sodium storage potential leads to a decrease in energy density (J Electrochem Soc, 2011, 158, A1067-1070); organic negative electrode materials, such as sodium terephthalate A typical representative (Adv Energy Mater, 2012, 2, 962-965), has the advantages of high specific capacity and high cycle stability, but due to the low sodium storage potential, the electrolyte solution is reduced and decomposed on the electrode surface, resulting in an efficiency of only 60 in the first week. % or so, difficult to practical application

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