Methods and systems for salt rinsed surface doping of electrode materials

• Main Authors: KIM BITNA-RI, LIU LEI, HARRISON CHRISTOPHER, KIM KIHONG, PALMER ALAN, WANG LIXIN, LEE EUN-SEUNG, YU TAE HWAN, MIELONEN ANTTI, D. JOHANSSON
• Format: Patent
• Language: Chinese; English
• Published: 16.05.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

Methods and systems are provided for salt rinsed surface doping of electrode materials for lithium ion batteries. In one example, a method may include dissolving a doped salt in a solvent to form a doped salt rinse solution; rinsing the electrode active material with the doped salt rinsing solution to form a coated electrode active material; and heating the coated electrode active material to form a doped electrode active material. In some examples, a surface region of the doped electrode active material may include a uniformly distributed dopant from the doping salt rinse solution. As such, the electrode active material may be rinsed and doped via a doping salt rinse solution during a single stage. 提供对用于锂离子蓄电池的电极材料进行盐冲洗表面掺杂的方法和系统。在一个示例中，一种方法可包括将掺杂盐溶解在溶剂中以形成掺杂盐冲洗溶液；用所述掺杂盐冲洗溶液冲洗电极活性材料以形成经过涂布的电极活性材料；以及加热所述经过涂布的电极活性材料以形成经过掺杂的电极活性材料。在一些示例中，所述经过掺杂的电极活性材料的表面区域可包含来自所述掺杂盐冲洗溶液的均匀分布的掺杂剂。如此一来，可在单阶段过程中经由掺杂盐冲洗溶液对所述电极活性材料进行冲洗和掺杂。