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1.发明公开
公开(公告)号：EP4418364A1
公开(公告)日：2024-08-21
申请号：EP22880923.2
申请日：2022-10-06
发明人： NAKADA, Yoshinobu , RIKITA, Naoki , TANG, Jie , ZHANG, Kun
摘要： Performance is improved. There is provided a negative electrode material for a battery, in which the negative electrode material includes carbon, sodium tungstate, and silicon particles 33 including silicon, and in the silicon particle 33, a ratio of the amount of Si in Si2p derived from elemental silicon to the amount of Si in Si2p derived from SiO2 in a surface layer when measured by X-ray photoelectron spectroscopy is 3 or more on an atomic concentration basis.
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2.发明公开
公开(公告)号：EP4322251A1
公开(公告)日：2024-02-14
申请号：EP22784483.4
申请日：2022-03-18
发明人： NAKADA, Yoshinobu , RIKITA, Naoki , TANG, Jie , ZHANG, Kun
摘要： To improve performance. A negative electrode material is a negative electrode material for a battery, and includes carbon, tungsten trioxide, and silicon particles (33) including silicon, and in the silicon particles (33), a ratio of the amount of Si in Si2p derived from elemental silicon to the amount of Si in Si2p derived from SiO 2 in a surface layer is 3 or more, on an atomic concentration basis, as measured by X-ray photoelectron spectroscopy.
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3.发明公开
公开(公告)号：EP4418366A1
公开(公告)日：2024-08-21
申请号：EP22881058.6
申请日：2022-10-12
发明人： RIKITA, Naoki , NAKADA, Yoshinobu , TANG, Jie , ZHANG, Kun
摘要： Performance of a negative electrode material is improved. The negative electrode material is a negative electrode material for a battery that includes carbon, sodium tungstate provided on a surface of the carbon, and silicon provided on the surface of the carbon.
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4.发明公开
公开(公告)号：EP4135074A1
公开(公告)日：2023-02-15
申请号：EP21785409.0
申请日：2021-02-22
发明人： RIKITA, Naoki , NAKADA, Yoshinobu , TANG, Jie
摘要： A negative electrode material is a negative electrode material for a battery, and the material includes carbon, tungsten trioxide formed on the surface of the carbon, and silicon formed on the surface of the carbon.
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公开(公告)号：EP4074654A1
公开(公告)日：2022-10-19
申请号：EP20898140.7
申请日：2020-12-02
发明人： NAKADA, Yoshinobu , RIKITA, Naoki
摘要： The present invention provides a fine silicon powder and the like including fine silicon particles having a microscopically measured particle diameter of 1 µm or more and an average circularity determined in accordance with Formula (1) of 0.93 or more, in which an average particle diameter based on volume, which is measured by a laser diffraction scattering method, is in a range of 0.8 µm or more and 8.0 µm or less, an average particle diameter based on number, which is measured by the laser diffraction scattering method, is in a range of 0.100 µm or more and 0.150 µm or less, and a specific surface area, which is measured by a BET method, is in a range of 4.0 m 2 /g or more and 10 m 2 /g or less. Circularity = 4 × π × projected area of particle 1 / 2 / peripheral length of particle
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公开(公告)号：EP4418365A1
公开(公告)日：2024-08-21
申请号：EP22881057.8
申请日：2022-10-12
发明人： RIKITA, Naoki , NAKADA, Yoshinobu , TANG, Jie , ZHANG, Kun
摘要： A tungsten compound is appropriately disposed on a surface of carbon. The negative electrode material is a negative electrode material for a battery that includes amorphous carbon and sodium tungstate provided on a surface of the amorphous carbon.
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7.发明公开
公开(公告)号：EP4044280A1
公开(公告)日：2022-08-17
申请号：EP20873563.9
申请日：2020-10-06
发明人： RIKITA, Naoki , TANG, Jie
摘要： Tungsten trioxide is appropriately disposed on the surface of carbon. A negative-electrode material is a negative-electrode material for a battery and contains amorphous carbon and tungsten trioxide provided on the surface of the amorphous carbon.
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