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Lithium ion polymer battery and method of producing same

A lithium ion and polymer technology, applied in the field of lithium ion polymer batteries and their manufacturing, can solve the problems of high conductivity and easy thin film formation of electrolyte membranes

Pending Publication Date: 2021-09-28
SUMITOMO METAL MINING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, in lithium-ion polymer batteries, the electrolyte membrane has high conductivity and is easy to thin

Method used

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  • Lithium ion polymer battery and method of producing same

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Embodiment

[0134] Hereinafter, the present invention will be described more specifically through examples, but the present invention is not limited to the following examples.

[0135] [Example]

[0136] "Synthesis of Cathode Materials"

[0137] In 2mol lithium phosphate (Li 3 PO 4 ) and 2mol of iron(II) sulfate (FeSO 4 ) was added to water and mixed so that the total amount became 4 L, thereby preparing a uniform slurry-like mixture.

[0138] Next, the mixture was stored in a pressure-resistant airtight container with a capacity of 8 L, and hydrothermal synthesis was performed at 150° C. for 24 hours to form a precipitate of a positive electrode active material.

[0139] Next, the precipitate was washed with water to obtain a cake-shaped positive electrode active material.

[0140] Then, 200 g of water, 10 g of polyethylene glycol and 8 g of sucrose as an organic compound were added to 150 g of the positive electrode active material (in terms of solid content), and zirconia beads wi...

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Abstract

The object of the invention is to provide a lithium ion polymer battery that can be produced without using metallic lithium and of which substantially all the production steps can be performed in air, and a method of producing the same. The lithium ion polymer battery includes: a positive electrode that includes at least a positive electrode material which is capable of desorbing lithium ions when the battery is charged; and a negative electrode which includes an ionic conductive polymer layer which is provided on the current collector.

Description

technical field [0001] The invention relates to a lithium ion polymer battery and a manufacturing method thereof. Background technique [0002] In recent years, non-aqueous electrolyte solution secondary batteries such as lithium ion secondary batteries have been proposed and put into practical use as batteries for which miniaturization, weight reduction, and high capacity are desired. A lithium ion secondary battery includes a positive electrode, a negative electrode, and a non-aqueous electrolyte having properties capable of reversibly deintercalating lithium ions. [0003] As the negative electrode active material of the negative electrode material of the lithium ion secondary battery, generally, a carbon-based material or a Li-containing metal oxide having a property of reversibly deintercalating lithium ions is used. As the metal oxide containing Li, for example, lithium titanate (Li 4 Ti 5 o 12 ). [0004] On the other hand, a positive electrode of a lithium ion s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/58H01M4/62H01M10/0525H01M10/0565H01M10/058
CPCH01M4/5825H01M4/625H01M10/0565H01M10/058H01M10/0525H01M4/13H01M4/622H01M2004/027H01M4/366H01M4/62Y02P70/50Y02E60/10H01M4/136H01M4/667H01M2300/0082
Inventor 大野宏次
Owner SUMITOMO METAL MINING CO LTD