Fabrication method of dual-polarity solid-state lithium secondary battery

A secondary battery and bipolar electrode technology, applied in secondary batteries, battery electrodes, electrode carriers/collectors, etc., can solve problems such as limiting battery applications, achieve high safety, controllable voltage, and easy large-scale The effect of production
CN109768334AInactive Publication Date: 2019-05-17CHINA ELECTRONIC TECH GRP CORP NO 18 RES INST
14 Cites 16 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA ELECTRONIC TECH GRP CORP NO 18 RES INST
Publication Date
2019-05-17
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
Patent Text Reader

Abstract

The invention discloses a fabrication method of a dual-polarity solid-state lithium secondary battery, and belongs to the technical field of a chemical power supply. The used bipolarity current collector is a bipolarity aluminum-plated copper current collector obtained by a physical or chemical deposition method, the thickness and the weight of the bipolarity current collector are controllable; and the used solid-state electrolyte is a high-ion conductivity solid-state electrolyte, and room-temperature or low-temperature working can be achieved. A solid-state electrolyte system is used in thebipolarity structure battery, the problem of internal short circuit brought by a liquid-state electrolyte is effectively prevented, the bipolarity solid-state lithium secondary battery fabricated according to the method proposed by the invention has the remarkably advantages of voltage controllability and high safety, and large-scale production is easy.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of chemical power sources, and in particular relates to a preparation method of a bipolar solid lithium secondary battery. Background technique

[0002] The bipolar structure electrode is composed of a conductive matrix in the middle, a positive active material on one side and a negative active material on the other side. Based on this, the battery can be connected in series internally to adjust the voltage as needed. Although the concept of bipolar electrodes has a long history, it has not been widely used in lithium-ion batteries, mainly due to the limitation of the electrolyte system. Since the internal monomer units of the bipolar battery are connected in series, the strong fluid electrolyte and the traditional gel electrolyte that contains a lot of liquid and has poor liquid retention can easily form an electronic conduction path inside the battery, resulting in an internal short circuit. .

[0003] T...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More