基本信息:
- 专利标题： AQUEOUS SECONDARY BATTERY
- 申请号：EP24165312.0 申请日：2024-03-21
- 公开(公告)号：EP4443559A1 公开(公告)日：2024-10-09
- 发明人： SUYAMA, Hiroshi , SATO, Shigeki , TANAKA, Bunta
- 申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA
- 申请人地址： JP Aichi-ken 471-8571 1, Toyota-cho Toyota-shi
- 专利权人： TOYOTA JIDOSHA KABUSHIKI KAISHA
- 当前专利权人： TOYOTA JIDOSHA KABUSHIKI KAISHA
- 当前专利权人地址： JP Aichi-ken 471-8571 1, Toyota-cho Toyota-shi
- 代理机构： D Young & Co LLP
- 优先权： JP 23046682 2023.03.23
- 主分类号： H01M4/50
- IPC分类号： H01M4/50 ; H01M10/22 ; H01M10/36
摘要：
The aqueous secondary battery of the present disclosure comprises:
a positive electrode active material layer, an aqueous electrolyte, and a negative electrode active material layer, wherein
the aqueous electrolyte contains an aqueous solvent and potassium polyphosphate which has two or more elemental phosphorus, and any one of potassium ion, proton, hydroxide ion, and polyphosphoric anion is a carrier ion,
a positive electrode active material contained in the positive electrode active material layer has a monoclinic crystal structure represented by space group C2/m, is represented by composition formula MnO2·AxBy(H2O)z, and the A, B, and H2O are present in a space interposed between layers composed of Mn-O octahedrons,
A is an alkali metal or alkali rare earth metal,
B is an anion, 0
a positive electrode active material layer, an aqueous electrolyte, and a negative electrode active material layer, wherein
the aqueous electrolyte contains an aqueous solvent and potassium polyphosphate which has two or more elemental phosphorus, and any one of potassium ion, proton, hydroxide ion, and polyphosphoric anion is a carrier ion,
a positive electrode active material contained in the positive electrode active material layer has a monoclinic crystal structure represented by space group C2/m, is represented by composition formula MnO2·AxBy(H2O)z, and the A, B, and H2O are present in a space interposed between layers composed of Mn-O octahedrons,
A is an alkali metal or alkali rare earth metal,
B is an anion, 0