科學家正研究鋰電池的極限以利於開發下一代高安全和長壽命鋰電池

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February 22, 2018：Researcher Rob Schmidt and his team are using neutrons at HFIR』s CG-1D imaging instrument to study the development of dendrites with hope of improving the design of next-generation lithium ion batteries. Dendrites are thin microscopic fibers that can carry electrical current inside lithium batteries and, in some cases, cause safety and reliability issues.

研究人員Rob Schmidt 和他的團隊正利用HFIR』s CG-1D成像設備中的中子來研究枝晶的形成以幫助提高下一代鋰電池的性能。枝晶是鋰電池內一種可以形成內部電流的載電子細微纖維，有時候，會引起安全和可靠性問題。

The team is using CG-1D』s high sensitivity to lithium to track the lithium ion progression across the electrolyte and to observe the conditions that lead to the formation of unwanted dendrites. Dendrites, thin lithium metal filaments that can form inside battery cells, degrade battery performance by creating unwanted variations in electrical current distributions.

這個團隊用高靈敏的CG-1D追蹤鋰離子通過電解液的過程以觀察枝晶的形成條件。枝晶，細的鋰金屬長絲可以形成內部微電池，會在電流分布中通過引起不必要的變動危害電池性能。

「Lithium is a soft metal material, so a lithium dendrite is able to go through liquids pretty easily, which makes it easy for batteries to short out,」 said Schmidt. 「Lithium shouldn』t go through a stiff, ceramic-like material like the garnet material we』re studying, but it does. We want to know why and how it does that.」

"鋰是種軟性鹼金屬，因此鋰枝晶很容易穿過液體，會造成短路「，Schmidt說到，」鋰不應該穿過堅硬的、陶瓷狀的材料，如我們正在研究的紅石榴材料。我們想知道它為何及如何做到的。

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