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国产卫星系统首次实现南北极低延时视频通话

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yun2025 发表于 前天 09:17 | 显示全部楼层 |阅读模式
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国产卫星系统首次实现南北极低延时视频通话

2026年10月,中国科学院金属研究所公布无钴高镍电池正极材料研究进展。团队不再单靠反复试配来挑选微量添加元素,而是把离子电荷密度、金属与氧的结合强度作为设计依据,让锂离子更容易移动,同时减少充放电对晶体骨架的损伤。按照这一思路,研究人员将镁、钙、钛、锆引入正极材料,兼顾快速充放电与结构耐久性。

实验中,该材料在25C倍率下的比容量达到每克130.9毫安时,在10C倍率下循环350次后仍保留82.4%的容量。低温测试也显示出潜力,相关软包电池在零下20摄氏度时实现每千克278.6瓦时的能量密度。研究说明,材料成分的精细设计能够同时改善传输速度和低温表现,为开发高功率、长寿命电池提供新的筛选方法。上述结果来自特定实验体系,后续仍需结合电芯结构、生产工艺和实际使用条件进行验证。

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卡雷 发表于 前天 09:29 | 显示全部楼层
路过,支持一下啦
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