A multi-response smart zinc-air battery and its preparation method

Abstract

The invention discloses a multi-response intelligent zinc-air battery and a preparation method thereof. In the present invention, carbon nanotubes or graphenes are mixed with polymer PEDOT-b-PEO and then ultrasonically dispersed to prepare a catalyst for preparing a multi-response foam positive electrode. And further, the dispersion liquid of this catalyst was repeatedly soaked in elastic foam to prepare a multi-response foam positive electrode for smart zinc-air battery. The multiple-response foam cathode can respond multiplely to pressure, ultraviolet light, and sunlight, and can be combined with metal zinc anode and alkaline polymer gel electrolyte to form a smart zinc-air battery. The solution is simple in process, low in production cost and low in environmental pollution, and is an important innovation in the field of energy devices. Therefore, the multi-response foam cathode has broad application value and prospects in the preparation of intelligent metal-air batteries with multiple responses to pressure, ultraviolet light and sunlight, as well as other responsive devices or smart energy management devices to external stimuli.

Description

technical field [0001] The invention belongs to the technical field of energy storage batteries. More specifically, it relates to an intelligent zinc-air battery with multiple responses to pressure, ultraviolet light and sunlight and a preparation method thereof. Background technique [0002] With the vigorous development of portable and smart electronic devices, people's lives have been greatly facilitated. In order to further enhance "human-computer interaction" and meet people's other special needs, it is very important to design energy storage devices with new functions. In addition, systems that can respond to various external environmental stimuli, such as light, heat, magnetism, pH, and force, have received extensive attention. The stimuli-responsive system can have good application prospects in sensors, biomimetic devices and biomedicine. Therefore, combining traditional energy storage devices with special response properties will endow traditional energy storage d...

AI Technical Summary

Problems solved by technology

However, most of the traditional primary zinc-air batteries cannot be recharged, and the zinc-air batteries currently on the market claim to be rechargeable (for example, in 1997, the Slovenian inventor Miro Zoric developed the first rechargeable zinc-air battery and applied it to Small and medium-sized buses), which need to use expensive metal catalysts such as "platinum" and "iridium oxide" to promote the reduction and generation of oxygen during the charging and discharging process, and are also limited by the high cost of recharging

Recently, the team of Professor Lei Yongpeng from Central South University has developed a graphene airgel electrocatalyst that can be used in rechargeable zinc-air batteries. The cost is only one-twentieth of platinum, iridium and other noble metal catalysts, but the performance Comparable to it; but it is a nitrogen-doped catalyst, the oxygen evolution (OER) reaction activity is generally poor, requires high temperature heat treatment, and the preparation is complicated

Moreover, there is no responsiveness to external stimuli, and the inability to respond to external environmental stimuli is another major reason why zinc-air batteries cannot meet the intelligent needs of batteries.

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