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干电池庞大的市场需求

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发表于 2019-10-28 16:13:33 | 显示全部楼层 |阅读模式
1. 庞大的市场需求  
我国一年消耗干电池30亿节,而其中50%左右是5号电池,大概15亿颗。这是一个极其庞大的耗材市场,消耗电池的设备诸如摄影器材、体重秤、儿童玩具、剃须刀、钟表、遥控器、无线键盘鼠标等,这些耗电设备更换周期极长,因此这种持续的消耗会长期存在,市场在未来的3-5年不会有较为明显的变化。
2. 钛酸锂电池缺点:优点介绍
1.安全性好,电动车电池最重要的一点就是需要高安全性,钛酸锂由于其平衡电位高,不会在负极形成锂枝晶,而具有很好的安全性。
2.循环性能好,由于其是零应变材料,而不会在充放电过程中发生结构的变化,具有非常优越的循环性能。
3.可以快速充放电,锂离子在钛酸锂晶体中的扩散系数是2×10-8cm-2/s,比石墨负极多一个数量级,可以快速充放电,快速充电能力是考察电动车电池的一个重要指标。
4.工作温度范围宽-30℃-60℃,低温下锂的嵌入及脱出能力都会下降,尤其是嵌入能力,钛酸锂负极在-30℃下充电也不会出现导致短路或使负极恶化的锂枝晶出现,这是石墨负极无法做到的,在广泛的环境下能够快速充电和放电,适用于车载用途。
5.自放电小,在一个帖子提到我们的实验数据,正极采用我们常规型锰酸锂,负极用钛酸锂,60度存储28天容量剩余率88%,容量恢复率95%以上。

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