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1 为什么坐飞机不让托运充电宝(第1页)

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1 为什么坐飞机不让托运充电宝?

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为什么坐飞机的时候充电宝不让托运?这不是充电宝的责任,而是锂离子电池的责任,充电宝用的电池是锂离子电池,在挤压、高低温、遇水等极端情况下容易起火。

所以,不仅是充电宝,只要带有锂离子电池的电器用品都不能托运,例如笔记本电脑。

在飞机上,由于气压骤变、行李会因颠簸而相互挤压,这些因素都会使锂离子电池有着火的风险。

如果锂离子电池是在客舱着火,还能拿灭火器人工扑灭;但在飞机飞行过程中,锂离子电池在行李舱里起火的话,由于行李舱里没人,这就非常危险。

既然这样,为什么还要用锂做电池呢?因为锂充放电性能好,且储电量大,电动汽车之所以能够普及,就是因为锂离子电池的储电量大,使得电动车有足够的续航里程。

普通干电池靠化学反应放电,化学反应完了,电就用完了,很难通过充电让反应物回到反应前的状态。

而锂元素在元素周期表上排行第三,一个锂原子里有三个电子,它的电子结构导致最外层的一个电子很容易被拔出来,相应地也容易被装回去,因为这个特性,锂的化合物成了优质充、放电材料。

除此之外,锂是最轻的金属,同样质量的不同金属,锂的原子数最多,因此,同样质量的金属,锂原子可用的电子也是最多的。

理论上,其他材料都不如锂的储电量更大。

因为充、放电容易和储电量大的特点,所以锂离子电池被广泛应用于电子产品中。

不过锂元素易于充、放电的特性是把“双刃剑”

,它的化学性质极其活跃,容易发生置换反应,比如把锂放在水里,锂会轻易地把水里的氢元素给置换出来,从而生成氢氧化锂和氢气。

由于氢气有易燃易爆的特性,所以锂有一定的危险性,这也是充电宝在坐飞机时不让托运的根本原因。

其实很多技术都具有两面性,它们一方面可以满足我们的性能需求,另一方面也可能对其他方面产生隐患。

例如,核能虽然产生能量的效率高,但是核电站的爆炸事故对环境的影响是灾难性的。

技术的进步往往是举步维艰的,它们对我们并非永远有益。

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