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Ion photoelectric conversion and storage integrated device

A photoelectric conversion and ion-type technology, applied in the direction of electrochemical generators, capacitor parts, electrical components, etc., can solve problems such as difficult miniaturization, high cost, and complexity, and achieve simplification, high miniaturization, and improved energy The effect of conversion efficiency

Active Publication Date: 2014-07-16
INST OF PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such systems are generally more complex, costly, and difficult to miniaturize

Method used

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  • Ion photoelectric conversion and storage integrated device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1 Preparation of Li ion-type photoelectric conversion and storage integrated device 1 of the present invention

[0036] First, a 2 μm thick Li ion-type mixed conductor LiFePO was deposited on fluorine-doped tin oxide conductive glass (FTO) using the magnetron sputtering method. 4 The thin film acts as a photoanode. The counter electrode material is 2um thick Li deposited on FTO by magnetron sputtering. 4 Ti 5 o 12 film. The electrolyte is polymethyl methacrylate (PMMA) based propylene carbonate (PC) + LiClO 4 Thin films prepared from gel electrolytes. The photoanode, electrolyte, and counter electrode are assembled into a battery, and the battery constitutes a Li ion-conducting photoelectric conversion and storage device. When the photoanode is irradiated with 248nm ultraviolet light, the open circuit voltage of the device rises from 10mV to 200mV when the light is not irradiated, and the photovoltage drops when the light is stopped, as shown in figure 1 ...

Embodiment 2

[0037] Example 2 Preparation of Li ion-type photoelectric conversion and storage integrated device 2 of the present invention

[0038] First, 2 μm thick LiCoPO was deposited on fluorine-doped tin oxide conductive glass (FTO) using the magnetron sputtering method. 4 The thin film acts as a photoanode. Fabrication of a layer of N-doped Li on the photoanode by magnetron sputtering 3 PO 4 (LiPON) as a solid electrolyte, a 2um thick layer of NiO is deposited on the electrolyte layer by magnetron sputtering as the counter electrode, and finally a 20nm thin layer of Au is deposited by thermal evaporation as the counter electrode current collector, that is, an all-solid-state Li-ion photoelectric conversion and storage integrated device. When the photoanode is irradiated with 248nm ultraviolet light, LiCoPO 4 Electron-hole pairs are generated in LiCoPO after exchange of Li ions with holes 4 out, NiO intercalated through the electrolyte, and Co in the photoanode 2+ Oxidized to Co...

Embodiment 3

[0039] Example 3 Preparation of Li ion-type photoelectric conversion and storage integrated device 3 of the present invention

[0040] First LiFePO 4 The powder was mixed with 5% polyvinylidene fluoride (PVDF) nitrogen methyl pyrrolidone solution at normal temperature and pressure to form a slurry (LiFePO 4 :PVDF=95:5), the slurry was dropped on a titanium sheet, and a photoanode was prepared by a spin coating method. The counter electrode is a graphite electrode. The electrolyte is 1molLiClO 4 Soluble in 1L PC solvent. Assembling the photoanode, electrolyte, and counter electrode into a battery constitutes a Li-ion photoelectric conversion and storage integrated device. When the photoanode is illuminated, LiFePO 4 Electron-hole pairs are generated in LiFePO after exchange of Li ions with holes 4 The electrons extracted from the photoanode and transported by the external circuit pass through the electrolyte and recombine on the surface of the graphite electrode. Fe in t...

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Abstract

The invention provides an ion photoelectric conversion and storage integrated device, which mainly comprises a light anode, electrolyte and counter electrode, wherein at least one light-absorbing material of the light anode generates electrons and hole pairs under the condition of light excitation; electrons are transferred to the counter electrode through an external circuit; the hole converts at least one matter in the light anode into a high oxygen state from a low oxygen state and a kind of ions in the light anode are transferred from the light anode to the electrolyte and then diffused to the counter electrode; and the kind of ions are stored on the surface of the counter electrode or into the counter electrode together with the electrons generated by the light anode and transferred from the external circuit. The ion type photoelectric energy conversion and storage device realizes the integration of conversion and storage of light energy and can be used as photochromic, electrochromic and photoelectric switches.

Description

technical field [0001] The invention relates to a photoelectric conversion and storage integrated device, in particular to an ion-type photoelectric conversion and storage integrated device. Background technique [0002] At present, due to the constraints of fossil resources and the environmental and energy problems caused by their massive consumption, such as global warming and environmental degradation, etc., which directly affect and threaten human survival and quality of life, human beings urgently need to develop green new energy and have Devices with high energy conversion efficiency. [0003] Making full use of solar energy is one of the effective ways to solve energy problems. The energy of sunlight is huge, and the solar energy reaching the earth's surface in one year is equivalent to more than 10,000 times the annual energy consumption of human beings. Solar energy utilization includes solar photovoltaic power generation, solar thermal power generation, and solar ...

Claims

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Application Information

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IPC IPC(8): H01M16/00H01G9/04H03K17/78
Inventor 禹习谦李泓黄学杰
Owner INST OF PHYSICS - CHINESE ACAD OF SCI
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