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Cathode of all-solid state lithium-sulfur secondary battery using graphene oxide and method for manufacturing the same

A lithium-sulfur secondary battery, all-solid-state technology, applied in the direction of secondary batteries, battery electrodes, lithium batteries, etc., can solve the problems that the capacity cannot be fully improved, electrons are not easy to transfer, etc., and the service life characteristics and capacity are improved. , The effect of improving the service life characteristics

Inactive Publication Date: 2016-10-26
HYUNDAI MOTOR CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when a conductive material of a porous material (hereinafter referred to as "porous conductive material") is used, sulfur can be injected into the pores of the porous conductive material to form a beam-like structure, and electrons are not easily transported between the composites.
Accordingly, the capacity cannot be increased sufficiently

Method used

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  • Cathode of all-solid state lithium-sulfur secondary battery using graphene oxide and method for manufacturing the same
  • Cathode of all-solid state lithium-sulfur secondary battery using graphene oxide and method for manufacturing the same
  • Cathode of all-solid state lithium-sulfur secondary battery using graphene oxide and method for manufacturing the same

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Embodiment

[0080] The following examples illustrate the invention without intending to limit it.

[0081] Hereinafter, the present invention will be described in more detail by way of examples. However, the embodiment was shown to describe the present invention, but the scope of the present invention is not limited thereto.

[0082] Example

[0083] (1) Manufacture of cathode

[0084] 1) A cathode active material, mesoporous carbon as a porous carbon material, and graphene oxide were pulverized, and then heat-treated at a temperature of 160° C. for 10 hours.

[0085] 2) A solid electrolyte was added to the heat-treated resulting material, followed by milling for 10 hours.

[0086] 3) A binder and a solvent were added to the milled resulting material, milled for 3 hours, and mixed to make a cathode slurry.

[0087] 4) Coating the cathode slurry on the aluminum substrate with a thickness of 100-500 μm by doctor blade method.

[0088] 5) The coated slurry was dried at room temperatur...

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Abstract

Disclosed is a cathode of an all-solid state lithium-sulfur secondary battery, and a method for manufacturing the same. In particular, the cathode of the all-solid state lithium-sulfur secondary battery may comprise a graphene oxide connecting active material-carbon material complexes to improve electron transporting efficiency in the cathode, such that a battery capacity is improved.

Description

technical field [0001] The invention relates to a cathode of an all-solid-state lithium-sulfur secondary battery using graphene oxide and a method for manufacturing the cathode. The cathode of the all-solid-state lithium-sulfur secondary battery can include graphene oxide, which can connect the active material-carbon material composite, so that the electron transport efficiency in the cathode can be improved. Background technique [0002] Secondary batteries that can be charged and discharged have been widely used as large-capacity power storage batteries in electric vehicles, power storage systems, etc., or as small high-performance energy sources for mobile electronic devices such as mobile phones, camcorders, and portable computers. [0003] Lithium-ion batteries as secondary batteries offer advantages such as high energy density per unit area and high capacity over nickel-manganese batteries or nickel-cadmium batteries. [0004] However, lithium-ion batteries have vario...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/052H01M4/13H01M4/62H01M4/139B60L11/18
CPCB60L50/50H01M4/13H01M4/139H01M4/62H01M4/625H01M10/052H01M4/136H01M4/1397H01M4/38H01M4/382H01M4/5815H01M4/622H01M10/0562H01M2004/028H01M2220/20H01M2300/0068H01M2300/0071Y02E60/10Y02P70/50Y02T10/70H01M4/587
Inventor 金容九
Owner HYUNDAI MOTOR CO LTD
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