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美国新能源材料公司Paraclete Energy推出高硅含量负极材料,实现电池续航超1000公里

新闻正文:
随着电动汽车市场的迅猛发展和可再生能源需求的不断攀升,高能量密度的锂离子电池技术成为行业发展的焦点。近日,美国密歇根州的新能源材料公司Paraclete Energy推出了一种名为SILO Silicon™的硅负极新材料,该材料硅含量高达83%,能让电池组的续航里程超过1000公里,这一突破性技术或将为电动汽车行业带来革命性的变革。

目前,商用锂电池普遍采用石墨作为负极材料,正极则主要由磷酸铁锂或锂镍锰钴氧化物等多元锂盐构成。然而,这类电池的实际比能量大约为250Wh kg^-1,难以满足市场对更高能量密度电池的需求。电动汽车市场亟需比能量超过400Wh kg^-1的锂电池,以实现超过500公里的行驶里程。

硅基材料因其理论容量是石墨的近10倍,在过去十多年里一直是研究的重点。但是,硅基材料在锂电池应用中面临低电导率、体积膨胀引发的安全隐患以及循环性能差等问题。为解决这些问题,Paraclete Energy采用了聚合物基质复合材料,不仅提高了负极复合材料中的硅含量,而且使其能量密度比传统石墨负极高出300%。

Paraclete Energy的SILO Silicon™负极材料通过创新技术实现了更高的能量密度和成本效益,有望使电动汽车的续航里程更长、充电速度更快、成本更低。该公司计划于2024年第四季度开始交付SILO Silicon™负极材料,预计将比竞争对手的项目提前数年。

这一创新技术的推出,对美国专注于磷酸铁锂电池的电池制造商而言,无疑是一次重大的技术进步。它不仅将推动电动汽车行业的发展,也将对全球能源结构产生深远影响。

图片说明:
图1:锂离子电池发展历程(来源:Nature Communications)
图2:SILO Silicon™负极材料(来源:Paraclete Energy)


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