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A solar-assisted seawater battery and its preparation method

A technology of seawater battery and sunlight, applied in aqueous electrolyte battery, photovoltaic power generation, circuit, etc., to achieve the effect of being environmentally friendly, feasible and practical, and simple in scientific principle

Active Publication Date: 2020-08-04
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to optimize the problem of continuous energy supply in the marine environment. The present invention proposes a solar-assisted seawater battery and its preparation method

Method used

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  • A solar-assisted seawater battery and its preparation method
  • A solar-assisted seawater battery and its preparation method
  • A solar-assisted seawater battery and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Coating + substrate growth

[0054] The cathode material selected in this embodiment is a Prussian blue coordination crystal, and its molecular formula is Fe 4 [Fe(CN) 6 ] 3 ; The photoanode material is titanium dioxide N-type semiconductor, and its molecular formula is TiO 2 ; The electrolyte is natural seawater.

[0055] Step 1: Preparation of Prussian Blue Coordination Crystals

[0056] 500 mg ferrous chloride hydrate (FeCl 2 ·6H 2 O) and 800 mg sodium citrate dihydrate (HOC(COOH)(CH 2 COONa) 2 1.5H 2 O) was dissolved in 200 ml deionized water to form a transparent and clear solution A; 580 mg sodium ferrocyanide (Na 4 [Fe(CN) 6 ]) was dissolved in 200 ml deionized water to form a transparent and clear solution B. Mix solution A and solution B uniformly at room temperature to obtain an off-white turbid liquid. React at room temperature (25°C) for 24 hours to obtain a dark blue Prussian blue coordination crystal solution, the obtained Prussian blue coordina...

Embodiment 2

[0068] coating + coating

[0069] The cathode material selected in this embodiment is a Prussian blue coordination crystal, and its molecular formula is Fe 4 [Fe(CN) 6 ] 3 ; The photoanode material is titanium dioxide N-type semiconductor, and its molecular formula is TiO 2 ; The electrolyte is natural seawater.

[0070] Step 1: Preparation of Prussian Blue Coordination Crystals

[0071] 500 mg ferrous chloride hydrate (FeCl 2 ·6H 2 O) and 800 mg sodium citrate dihydrate (HOC(COOH)(CH 2 COONa) 2 1.5H 2 O) was dissolved in 200 ml deionized water to form a transparent and clear solution A; 580 mg sodium ferrocyanide (Na 4 [Fe(CN) 6 ]) 3 Dissolve in 200 ml deionized water to form a transparent and clear solution B. Mix solution A and solution B uniformly at room temperature to obtain a gray-white turbid liquid. React at room temperature (25°C) for 24 hours to obtain a dark blue Prussian blue coordination crystal solution. Centrifuge the obtained Prussian blue coordina...

Embodiment 3

[0083] Plating + Coating

[0084] The cathode material selected in this embodiment is a Prussian blue coordination crystal, and its molecular formula is Fe 4 [Fe(CN) 6 ] 3 ; The photoanode material is titanium dioxide N-type semiconductor, and its molecular formula is TiO 2 ; The electrolyte is natural seawater.

[0085] Step 1: Preparation of Prussian blue coordination crystal film and seawater battery cathode

[0086] Dissolve 745mg of potassium chloride, 82.31mg of potassium ferricyanide, 67.57mg of ferric chloride, and 0.836ml of concentrated hydrochloric acid in 100ml of deionized water to form a mixed solution. With 2 cm × 1 cm × 0.1 cm ITO conductive glass as the working electrode, 1 cm × 1 cm × 0.1 cm platinum electrode as the counter electrode, silver / silver chloride electrode as the reference electrode, connected to the electrochemical workstation, using cyclic voltammetry Sweep mode in the voltage range of 0V ~ 0.9V at 50 m Vs -1 The speed was continuously sca...

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Abstract

The invention discloses a solar-assisted seawater cell and a preparation method thereof, and belongs to the field of photovoltaic conversion and energy. The method comprises the steps of 1) providinga negative electrode material for storing sites for metal ions in seawater by taking a coordination crystal as a main, and showing reversible charge-discharge characteristic of a secondary battery; 2)employing an N-type semiconductor which can be used for generating electron-hole pairs under solar simulation as a photo-anode material for providing electrons; and 3) taking a seawater solution withdissolved oxygen larger than or equal to 1ppm and sodium chloride larger than or equal to 0.35% as an electrolyte used for balancing polarization of ion concentration in an electrode brought by the power generation process and stabilizing an environment of the power generation device. When illumination is withdrawn, the ions stored in the sites are released by reaction of the dissolved oxygen andthe coordination crystal in the seawater, so that the recycling of the coordination crystal is achieved; and the solar-assisted seawater cell takes sunlight as an energy unique input source, is simple in scientific principle and low in construction cost, is safe and stable, is friendly to the environment and easy to promote and has practicality.

Description

technical field [0001] The invention relates to the field of photoelectric conversion and energy, in particular to a solar-assisted seawater battery and a preparation method. Background technique [0002] With the increasing human demand for fossil energy, the crisis of terrestrial fossil energy has become a global problem that needs to be resolved urgently. Therefore, the research on renewable energy has made great progress in recent years. Among them, the ocean, as the most abundant resource on the earth, has attracted the attention of researchers. Since Volt discovered in 1977 that zinc plates and silver plates were immersed in salt water and connected with wires to generate current, the prototype of seawater batteries came into being. Existing seawater batteries mainly adopt the working principle of primary batteries. The anode is active wave metal; the cathode is an electrode of silver chloride, cuprous chloride, or lead chloride. This type of seawater battery is char...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M6/04
CPCH01G9/2004H01G9/2027Y02E10/542
Inventor 胡鸣党琪张伟李昱岑
Owner EAST CHINA NORMAL UNIV
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