专利摘要显示，本公开涉及一种磷酸铁锂材料及其制备方法、锂离子电池，分别采用羟基磷酸铁和含有 金属掺杂元素的羟基磷酸铁作为磷铁源制备前驱体，基于四级粒度级配设计有效提升磷酸铁锂材料压实 密度，同时确保容量高效发挥。将该磷酸铁锂材料用于制备锂离子电池，可显著提升电池的能量密度、 倍率性能和循环寿命，契合电动汽车长续航、储能系统高效率等高端应用市场的发展需求，具有良好的 产业化应用前景。 人民财讯12月29日电，企查查APP显示，近日，小米汽车科技有限公司申请的"磷酸铁锂材料及其制备 方法、锂离子电池"专利获授权。 ...

Core Insights - Xiaomi Automotive Technology Co., Ltd. has recently published a patent for "lithium iron phosphate materials and their preparation methods, lithium-ion batteries" which aims to enhance the electronic conductivity and lithium-ion transport efficiency of lithium iron phosphate materials [1] Group 1: Patent Details - The patent utilizes metal-doped hydroxyl iron phosphate and metal-doped iron phosphate as iron sources to improve the performance of lithium iron phosphate materials [1] - A quaternary grading system is constructed by matching particles of different sizes, which increases the compact density of lithium iron phosphate materials while ensuring effective capacity utilization [1] Group 2: Market Potential - The lithium iron phosphate material developed can be used to manufacture lithium-ion battery products with higher volumetric energy density, better rate performance, and longer cycle life [1] - This innovation is aimed at meeting the stringent demands of high-end applications in electric vehicles and energy storage systems, indicating significant market potential and application value [1]