金融界2025年6月7日消息,国家知识产权局信息显示,小米汽车科技有限公司申请一项名为“一种电极极片及其制备方法和二次电池”的专利,公开号CN120109155A,申请日期为2023年12月。专利摘要显示,本发明属于储能技术领域。本发明公开了一种电极极片,包括集流体和依次设置在集流体一侧表面上的至少三层电极材料层;所述各层电极材料层的孔隙率沿垂直集流体表面且背离集流体的方向呈梯度递增;其中,所述...
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