Title:
METHOD FOR PRODUCING ELECTRODE MEMBER, SYSTEM FOR PRODUCING ELECTRODE MEMBER, METHOD FOR PRODUCING POSITIVE ELECTRODE ACTIVE MATERIAL, POSITIVE ELECTRODE ACTIVE MATERIAL, POSITIVE ELECTRODE MIXTURE AND SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2024/085192
Kind Code:
A1
Abstract:
The present invention provides a novel method for producing a positive electrode active material, the method using an ion species other than lithium. The present invention provides a method for producing an electrode member, the method using, as a starting material, a rubber material that contains sulfur, wherein the electrode member is a positive electrode active material. This method for producing an electrode member comprises a step for obtaining a positive electrode active material by: thermally decomposing the starting material into a solid and a dry-distilled gas; cooling and separating the dry-distilled gas into an oil component and a gas; separating the oil component by distillation into a heavy oil, a light oil and sulfur; kneading the thus-obtained heavy oil and sulfur with a carbide for positive electrode active materials and an ionic material containing at least one element that is selected from the group consisting of Na, K, Ca and Mg; and subjecting the kneaded material to a heat treatment in a non-oxidizing atmosphere. A material derived from waste (for example, fired plant ash and fired eggshell) can be used as the ionic material.
Inventors:
YAMASAKI SADAYOSHI (JP)
Application Number:
PCT/JP2023/037723
Publication Date:
April 25, 2024
Filing Date:
October 18, 2023
Export Citation:
Assignee:
RENAISIS CO LTD (JP)
International Classes:
H01M4/58; H01M4/36; H01M4/38
Domestic Patent References:
| WO2015093590A1 | 2015-06-25 |
Foreign References:
| JP2016009583A | 2016-01-18 | |||
| JP2011081926A | 2011-04-21 | |||
| JP2011091010A | 2011-05-06 | |||
| JP2023098554A | 2023-07-10 |
Attorney, Agent or Firm:
MORI Hiroshi et al. (JP)
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