Solar-assisted rechargeable zinc-air battery with low charging potential

A zinc-air battery and solar energy technology, which is applied in the field of rechargeable zinc-air batteries, can solve the problems of limited solar energy utilization, achieve energy efficiency, realize charge and discharge, and reduce the effect of charging potential

Active Publication Date: 2020-01-24
重庆新申世纪新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the utilization of solar energy is limited, and there is no previous research on whether the principle of photoelectric catalysis to promote the OER reaction process is applicable to zinc-air batteries

Method used

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  • Solar-assisted rechargeable zinc-air battery with low charging potential
  • Solar-assisted rechargeable zinc-air battery with low charging potential
  • Solar-assisted rechargeable zinc-air battery with low charging potential

Examples

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Embodiment 1

[0055] This embodiment relates to a solar-assisted rechargeable zinc-air battery with low charging potential. By introducing a photoelectrode into the Zn-air battery and serving as an air cathode at the same time, a two-electrode light-assisted rechargeable Zn-air battery was designed to realize the use of solar energy to reduce the overpotential, achieve high energy efficiency, and convert and utilize solar energy. The schematic diagram of the battery is shown in figure 1 Shown, where the illuminated side is the air electrode.

[0056] The preparation method of the rechargeable zinc-air battery with low charging potential assisted by solar energy in this embodiment; specifically includes the following steps:

[0057] (1) Preparation of air electrode

[0058] Preparation of bismuth vanadate photoelectrode:

[0059] Firstly, the conductive base material used is porous FTO (F-doped conductive glass with a length of 3-4 cm and a width of 1-2 cm) prepared by micro-processing te...

Embodiment 2

[0066] This embodiment relates to a solar-assisted rechargeable zinc-air battery with low charging potential. By introducing a photoelectrode into the Zn-air battery and serving as an air cathode at the same time, a two-electrode light-assisted rechargeable Zn-air battery was designed to realize the use of solar energy to reduce the overpotential, achieve high energy efficiency, and convert and utilize solar energy. The schematic diagram of the battery is shown in figure 1 Shown, where the illuminated side is the air electrode.

[0067] The preparation method of the rechargeable zinc-air battery with low charging potential assisted by solar energy in this embodiment; specifically includes the following steps:

[0068] (1) Preparation of air electrode

[0069] Preparation of iron oxide photoelectrode:

[0070] The conductive substrate material used, i.e. porous FTO (F-doped conductive glass with a length of 3-4 cm and a width of 1-2 cm) prepared by micro-processing technolog...

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Abstract

The invention discloses a solar-assisted rechargeable zinc-air battery with a low charging potential. The air cathode of the zinc-air battery is an iron oxide photoelectrode with a porous FTO substrate or a bismuth vanadate photoelectrode with a porous FTO substrate. According to the battery of the invention, the semiconductor material is used as the air cathode and the photoelectrode at the sametime, so that the charging voltage of the zinc-air battery is reduced by utilizing solar energy; and the utilization of the solar energy is realized under medium- and small-current charging and discharging, so that a low charging voltage is obtained, and therefore, the energy efficiency of the zinc-air battery is improved.

Description

technical field [0001] The invention belongs to the field of batteries, and more specifically relates to a rechargeable zinc-air battery with low charging potential assisted by solar energy. Background technique [0002] Among many energy storage devices, metal-air batteries have high energy density because they use oxygen in the air to participate in the reaction. Among them, the zinc-air battery has a high energy density (1086Wh·kg –1 ), and its low cost and environmental friendliness have attracted widespread attention. At present, primary zinc-air batteries have been commercially applied in hearing aids, traffic lights, etc. However, the development of rechargeable Zn-air batteries still faces challenges. Rechargeable zinc-air batteries are mainly composed of zinc anode, electrolyte, and air cathode. The air cathode consists of a porous current collector and a catalyst. The reaction formula of zinc-air battery is: [0003] Zinc electrode: [0004] [0005] Ai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M12/08H01M4/86H01M4/88H01M4/90
CPCH01M12/08H01M4/8605H01M4/8853H01M4/885H01M4/9016Y02E60/10
Inventor 钟澄刘晓瑞刘杰丁佳邓意达韩晓鹏胡文彬
Owner 重庆新申世纪新材料科技有限公司
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