Preparation method of dendrite-free zinc anode

Abstract

The invention discloses a preparation method of a dendrite-free zinc anode, which comprises the following steps of: flatly placing pure zinc foil on the surface of bacterial cellulose suspension to induce complete self-assembly of nano bacterial cellulose, and then drying the treated zinc foil in air for 12 hours to obtain the dendrite-free zinc anode; and enabling the nano bacterial cellulose to form a three-dimensional interlaced ion sieve coating on the surface of the zinc foil so as to obtain the dendrite-free zinc anode. Firstly, an IS coating which is extremely low in price is prepared on the surface of the zinc foil through a simple in-situ polymerization method, expensive raw materials and complex preparation processes are not involved in the process, and therefore the method can be matched with an existing battery production technology, and the production cost is greatly saved; and secondly, by introducing the IS coating, the hydrogen precipitation capacity of the zinc foil in the charging and discharging process can be obviously reduced, so that corrosion and passivation of the zinc sheet are inhibited, the energy conversion efficiency of the zinc sheet is enhanced, the relatively limited zinc sheet can continuously work for a longer time in the actual application process, and the economic benefit is obvious.

Description

technical field [0001] The invention relates to the technical field of zinc ion battery energy storage, in particular to a preparation method of a dendrite-free zinc anode. Background technique [0002] In recent years, human society has entered a period of rapid development. Correspondingly, various electronic industry technologies have also ushered in vigorous development, and the speed of their replacement has reached an unprecedented level. However, the development of the current energy storage field is still stagnant and has not kept pace with the development of the times. Although the application of lithium-ion batteries in daily electric products has become the mainstream, its high cost and potentially dangerous flammable and explosive properties are still a shadow in people's minds. Therefore, there is an urgent need to develop a low-cost, high-safety battery to meet the application requirements of increasingly growing electronic products. Among various metal anode...

AI Technical Summary

Problems solved by technology

However, the high cost and environmental pollution problems caused by the application of high-concentration salt have exceeded its actual production benefits and are not adopted by people.

Furthermore, the positive effects brought about by well-designed electrode structures and cell configurations usually involve complex fabrication methods or reconfiguration of other cell components, which inevitably lead to low cost-effectiveness, poor scalability, and limitations on existing cell production processes. Poor adaptability

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