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公开(公告)号：US10026520B2
公开(公告)日：2018-07-17
申请号：US14904237
申请日：2013-08-16
发明人： Jeong Soo Kim , Young Shol Kim , Je Hyun Chae , Hee Young Sun , Kyu Tae Lee , Seung Hee Woo , Kwang Ho Ha
IPC分类号： H01B1/06 , C01B25/42 , H01M4/58 , H01M10/054
摘要： Provided is a cathode active material for a secondary battery, specifically, a cathode active material for a secondary battery including sodium transition metal pyrophosphate satisfying Na3.12−x2Acx1M1ay1M2by2 (P2O7)z, which has an advantage of structural stability due to a strong P—O bond of sodium transition metal phosphate having an olivine structure, and also performs proper intercalation and deintercalation of Na ions having a large ion radius, thereby significantly improving reversibility during charging and discharging, and a charge and discharge rate.
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公开(公告)号：US20160164095A1
公开(公告)日：2016-06-09
申请号：US14904237
申请日：2013-08-16
发明人： Jeong Soo Kim , Young Shol Kim , Je Hyun Chae , Hee Young Sun , Kyu Tae Lee , Seung Hee Woo , Kwang Ho Ha
IPC分类号： H01M4/58 , H01M10/054
CPC分类号： H01B1/06 , C01B25/42 , H01M4/5825 , H01M10/054
摘要： Provided is a cathode active material for a secondary battery, specifically, a cathode active material for a secondary battery including sodium transition metal pyrophosphate satisfying Na3.12−x2Acx1M1ay1M2by2 (P2O7) z, which has an advantage of structural stability due to a strong P—O bond of sodium transition metal phosphate having an olivine structure, and also performs proper intercalation and deintercalation of Na ions having a large ion radius, thereby significantly improving reversibility during charging and discharging, and a charge and discharge rate.
摘要翻译： 本发明提供一种二次电池用正极活性物质，具体地说，涉及一种包含钠过渡金属焦磷酸钠，满足Na3.12-x2Acx1M1ay1M2by2（P2O7）z的二次电池用正极活性物质，其特征在于具有结构稳定性优良， 具有橄榄石结构的过渡金属磷酸钠的O键，并且还对离子半径大的Na离子进行适当的插入和脱嵌，从而显着提高充放电期间的可逆性以及充放电率。
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