Solar-assisted energy-saving charging type organic lithium-sulfur battery

A technology of organic lithium and sulfur batteries, applied in lithium batteries, non-aqueous electrolyte batteries, circuits, etc., can solve the problems of high cost, safety hazards, and consumption of metal lithium, and achieve the effect of saving charging points

Active Publication Date: 2020-01-10
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the battery is charged with light, the photogenerated electrons are not transferred to the negative electrode to reduce lithium ions to metal lithium, but to reduce protons to hydrogen gas to realize the conversion and storage of solar energy into chemical energy, resulting in the continuous consumption of metal lithium while storing solar energy.
In addition, the two-liquid system requires Li 1.35 Ti 1.75 Al 0.25 P 2.7 Si 0.3 o 12 (LATP) ceramic diaphragm isolates the water-based positive electrode and the organic-based negative electrode, which has high cost and safety hazards

Method used

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  • Solar-assisted energy-saving charging type organic lithium-sulfur battery
  • Solar-assisted energy-saving charging type organic lithium-sulfur battery
  • Solar-assisted energy-saving charging type organic lithium-sulfur battery

Examples

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Embodiment 1

[0033]In this embodiment, first, zinc nitrate and thiourea were dissolved in deionized water respectively to prepare 35ml, 0.03mol / L zinc nitrate solution and 35ml, 0.03mol / L thiourea solution, and the thiourea solution was added to the zinc nitrate solution, stirred for 30 minutes until clear. Then the mixed solution was transferred to the lining of the hydrothermal reaction kettle, heated to 140°C and reacted at this temperature for 8 hours. After the reaction was completed, it was naturally cooled to room temperature, then taken out, and then centrifugally washed with deionized water and absolute ethanol. Finally put it into an oven at 60° C. and dry for 4 hours to obtain spherical ZnS particles with a size of 200-300 nanometers.

[0034] Such as figure 1 As shown, the light-assisted charging lithium-sulfur battery structure includes a lithium sheet, a diaphragm, a sulfur composite electrode, and a semiconductor photoelectrode material that are vertically arranged in paral...

Embodiment 2

[0039] In this example, TiO 2 Preparation of SrTiO as a precursor 3 Photoelectrode, the specific process is as follows:

[0040] 1. Preparation of TiO with different morphologies 2 Precursor:

[0041] (1) Growth of TiO on carbon paper 2 Nanosheets: Add 30 μl of diethylenetriamine (DETA) to 42ml of isopropanol, stir for 5 minutes, add 1.5ml of titanium isopropoxide, stir for 10 minutes, and transfer the mixed solution to the lining of the hydrothermal reaction kettle. Put carbon paper in the inner lining of the reaction kettle, raise the temperature to 200°C and keep it at this temperature for 24 hours, take out the carbon paper after the reaction is finished and cool it down to room temperature naturally, add absolute ethanol to carry out centrifugal washing; finally, the carbon The paper was dried in an oven at 60°C for 12 hours, and the uniform growth on the carbon paper was white in color and about 20 nanometers in thickness. 2 Nanosheets.

[0042] (2) Growth of TiO o...

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Abstract

The invention relates to the field of conversion and storage from solar energy to electric energy, and especially relates to a solar-assisted energy-saving charging type organic lithium-sulfur battery. The solar-assisted charging organic lithium-sulfur battery comprises solid sulfur or a polysulfide ion solution anode, a lithium cathode and a semiconductor photoelectrode. During illumination charging, the semiconductor photoelectrode is excited by light to generate photo-induced electrons and holes, the holes in a valence band oxidize polysulfide ions, the photo-induced electrons reduce metallithium through an external circuit, a photovoltage generated by the photoelectrode partially compensates a charging voltage, the charging voltage is reduced, a purpose of saving electric energy is achieved, and meanwhile conversion and storage from solar energy to electric energy are achieved. The invention provides an efficient and stable solar rechargeable lithium-sulfur battery. A manufacturing method is simple, a process condition is mild and cost is low, and an industrial production requirement is satisfied.

Description

technical field [0001] The invention relates to the field of conversion and storage of solar energy to electric energy, in particular to a solar energy-assisted energy-saving charging type organic lithium-sulfur battery. Background technique [0002] The efficient storage and utilization of solar energy is one of the effective ways to alleviate the current energy crisis and environmental pollution problems facing the world. Constructing efficient solar rechargeable batteries is a new trend in the field of energy storage. Solar rechargeable lithium-ion batteries are divided into two types according to the construction mode: 1) Photovoltaic cell-integrated batteries, which integrate photovoltaic cells (including dye-sensitized solar cells or perovskite solar cells) into traditional lithium-ion batteries or capacitors. During illumination, photovoltaic cells convert solar energy into electricity to charge batteries or capacitors. The discharge capacity of such devices reporte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/053H01M10/052
CPCH01M10/052H01M2004/028H01L31/053Y02E10/50Y02E60/10
Inventor 李娜王艳君王悦岚孙旭东
Owner NORTHEASTERN UNIV
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