Water-based ion battery negative electrode material, aqueous ion battery negative electrode and preparation method thereof, and aqueous ion battery

Abstract

The invention discloses a negative electrode material of a water-based ion battery. The negative electrode material of the water-based ion battery comprises a negative electrode active material, a conductive agent and a binder, wherein the negative electrode active material comprises polyimide. The binder contains sodium carboxymethyl cellulose and butadiene styrene rubber. According to the water-based ion battery negative electrode material, an electrode material is prepared from a binder system of sodium carboxymethyl cellulose (CMC) and styrene butadiene rubber (SBR) according to a certainratio in a water-based battery taking a naphthalene ring-containing polyimide material as a negative electrode for the first time, and matches a lithium manganate positive electrode, so that excellentwater-based lithium ion battery performance is obtained.

Description

technical field

[0001] The present application relates to a negative electrode of an aqueous ion battery, which belongs to the field of lithium ion battery energy storage. Background technique

[0002] Due to the advantages of high voltage and high energy density, lithium-ion batteries have been widely recognized since they were launched in the 1990s, and now they have occupied a dominant position in the consumer electronics market and the new energy vehicle power battery industry. Traditional lithium-ion batteries mainly use organic carbonate electrolytes because they are well compatible with lithium cobalt oxide or ternary positive electrodes and graphite negative electrode materials, and can withstand the high voltage of lithium cobalt oxide / graphite system lithium-ion batteries. In recent years, with the improvement of people's requirements for battery safety, environmental protection and cost, aqueous electrolytes have begun to receive people's attention. Compared with...

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