Photo-assisted chargeable lithium ion secondary battery

Abstract

The invention relates to a photo-assisted chargeable lithium ion secondary battery, belonging to a cross domain of a photo-electro-chemical solar battery and a lithium ion secondary battery. The battery consists of an anode, a diaphragm, a cathode, an electrolyte solution and a lead wire. The diaphragm is located between the anode and the cathode; an external circuit between the anode and the cathode is communicated by using the lead wire; and an internal circuit is communicated by using the electrolyte solution to form a closing loop; the anode is a photo-permeability anode used by the photo-electro-chemical solar battery; the cathode is a cathode used by the lithium ion secondary battery; the diaphragm is an oxidation-resistant diaphragm capable of transmitting lithium ions and iodide ions and not transmitting iodide molecules, and the diaphragm is used by the lithium ion secondary battery; and the electrolyte solution is an organic electrolyte solution used by a lithium ion secondary battery containing Lil and / or LiBr. The battery has great stored energy capacity and solves a self-discharging phenomenon. The stored chemical energy can stably exit. Meanwhile, the charging electric energy consumption can be saved by using low voltage to charge under illumination. The photo-assisted chargeable lithium ion secondary battery provided by the invention has the advantages of low cost, simple equipment and good repeatability.

Description

technical field [0001] The present invention relates to a light-assisted rechargeable lithium-ion secondary battery, in particular to a novel light-assisted rechargeable lithium-ion secondary battery formed by combining photoelectric conversion and secondary battery materials, belonging to photoelectrochemical solar cells and The cross field of lithium ion secondary battery. Background technique [0002] Photoelectrochemical solar cells and lithium-ion secondary batteries have been in large-scale commercial applications for a long time, and the development and research of existing materials are becoming more and more mature. Today, no matter where you are, you cannot do without the application of batteries; in the future when natural reserves such as coal and oil are depleted, electric energy will become the largest source of energy supply. Since the first batch of commercially applicable batteries appeared in research laboratories in the early eighteenth century, the perfo...

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Problems solved by technology

[0006] Aiming at the defects in the prior art that the light-assisted charging lithium-ion secondary battery has limited storage energy and the stored chemical energy cannot exist stably for a long time; the purpose of the present invention is to provide a light-assisted charging lithium-ion secondary battery. The photoelectric conversion semiconductor positive electrode material of the photoelectrochemical solar cell and the negative electrode lithium storage material of the lithium ion secondary battery are combined to form, which can increase the stored energy of the battery, solve the self-discharge phenomenon, and make the stored chemical energy exist stably. Under the light, it can be charged with a lower voltage to save charging power consumption, low cost, simple equipment and good repeatability

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