打開臉書見到動態上全是血氧機的廣告,再次慶幸年初早買好Apple Watch S6給老人家們,這時候不用煩心。

"電池在使用期間,內部的化學反應會產生電能,起初會有一層鋅圍繞著電池的黃酮芯,就像一個甜甜圈的形狀,而隨著電池持續放電,鋅甜甜圈會逐漸變成氧化鋅。當氧化鋅越來越多後,就會慢慢擴散到電池的整個鋅層,電池就會變得越來越有彈性,所以使用越久、電力越少的電池,落到桌面時就會更容易彈跳起來。"

blog.icook.tw/posts/206718

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"Today, CarbonScape takes leftovers from timber making, but Williams believes it could also make use of so-called slash, which is the waste branches and other unwanted wood left in forests during logging. The wood chips are heated using a process known as pyrolysis to create biochar, a carbon-rich material that is then milled and converted to a raw form of graphite. That is purified and coated to get the quality needed for battery anodes.

目前,CarbonScap使用木材加工過程中的邊角料,但威廉姆斯認為,還可以利用所謂的「採伐剩餘物」,也就是伐木時留在森林中的廢棄枝椏和其他沒用的木頭。碎木片通過一種被稱為「熱分解」的工藝加熱,生成生物炭,隨後,這種富碳材料經過研磨,轉化為粗加工石墨。經過提純和塗層處理,便可達到製造電池陽極所需的品質要求。"

cn.wsj.com/articles/%E7%A2%8E%

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