Thinned energy storing device and manufacture process thereof

Abstract

The invention relates to a thinned energy storing device and a manufacture process thereof. The thinned energy storing device sequentially comprises a lower encapsulating layer, a collector layer, a positive layer, an isolation layer, a negative layer and an upper encapsulating layer from bottom to top, wherein the lower encapsulating layer and the upper encapsulating layer are made of barrier thin-film materials; the collector layer is made of a conducting material; the positive layer is prepared from inorganic active slurry with oxidizability; the isolation layer is made of specialty paper or a plastic film with electrical insulation property; the negative layer is made of a metal film material with reduction property. Compared with the prior art, the thinned energy storing device has the advantages that the process is more simplified, the manufactured thinned energy storing device has no internal pressure and high negative material activity, the electric capacity and the unit area capacity of the thinned energy storing device are improved, and besides, the electrodes and the isolation layer are positioned at the same axis, so that the connection with an energy dissipation device is facilitated, and the energy conversion efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of energy storage equipment, in particular to a thin energy storage device and a manufacturing process. Background technique [0002] Electrochemical energy storage devices are currently the most common energy storage devices. Columnar and button-shaped electrochemical energy storage devices are currently widely used electrochemical energy storage devices, and their use corresponds to traditional three-dimensional electronics. With the emergence of new flexible printed electronic products with two-dimensional thin-film sheets such as radio frequency identification tags (RFID), flexible displays, printed transistors, flexible circuits, and cosmetic masks and medical patches that require thin-film flexible power sources, traditional columnar and buckle Shaped electrochemical energy storage devices cannot be adapted to the connection of new flexible printed electronic products because their shape and structure...

AI Technical Summary

Problems solved by technology

With the emergence of new flexible printed electronic products with two-dimensional thin-film sheets such as radio frequency identification tags (RFID), flexible displays, printed transistors, flexible circuits, and cosmetic masks and medical patches that require thin-film flexible power sources, traditional columnar and buckle Shaped electrochemical energy storage devices cannot be adapted to the connection and use of new flexible printed electronic products because their shape and structure cannot be changed.

[0003] CN103227048A discloses a solid-state energy storage device, which is a capacitive energy storage device, which is not flexible and thin, and is difficult to integrate with flexible printed electronic products

CN102054981A discloses a method for modifying the negative electrode of a lithium battery, which is mainly used in fields such as electric vehicles and spacecraft, and is not related to flexible printed electronic products

[0004] The negative electrode materials of existing electrochemical energy storage devices usually use a mixture of active metals and their compounds and other conductive materials, or dope and modify active metals and their compounds to increase the activity and conversion rate of negative electrode materials. However, the existing negative electrode production methods all have the defects of complex production process, such as the need for multiple steps such as batching, compound doping and modification, and the completion of these processes requires a lot of manpower and material resources

[0005] Finnish patent FI20070584 discloses a thin battery (thin battery). The negative electrode of the battery is a mixture of metal powder, carbon powder, graphene and some adhesives. The negative electrode finally exists in the form of dry ink. Therefore, the production of the negative electrode requires ingredients, stirring, Printing and drying, the process is complicated, and the conversion rate of active metal in the negative electrode is not high

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