Sigma-Aldrich 硝酸锂，99.999%痕量金属基准

产品概述

硝酸锂是一种白色结晶盐，可溶于水、乙醇、甲醇、吡啶、氨和丙酮。重要的是，它在醚基溶剂如二甲氧基乙烷（DME）和1，3-二氧戊环（DOL）中的溶解度高达5wt%，但在碳酸酯基溶剂如碳酸亚乙酯（EC）和碳酸二乙酯（DEC）中仅可溶至多1重量%，。硝酸锂是由硝酸和碳酸锂反应生成二氧化碳和水而制成的。生成的材料经过纯化和干燥。

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应用领域

Researchers and manufacturers use lithium nitrate in the synthesis of many lithium compounds. Our 99.999% lithium nitrate is well-suited as a reagent for solid-state syntheses of lithium metal oxides, especially where purity is of high importance, for example, when making products whose fundamental properties are under investigation.
Our 99.999% lithium nitrate is also well-suited for use as an additive to electrolytes in lithium-sulfur batteries and lithium metal batteries. Lithium nitrate can passivate the surface of lithium metal and suppress the redox shuttle of the dissolved lithium polysulfides on the lithium anode. In one study, the addition of 0.3 M LiNO₃ nearly doubled the gravimetric capacity of lithium-sulfide batteries. Another study found that the dissolution of 1 to 5 wt% LiNO₃ to the electrolyte suppressed growth of lithium dendrites and extended cycle lifetimes.PMID 26081242 Similarly beneficial effects of lithium nitrate as an additive have been observed with Li₂S cathodesPMID 22909273, carbon nanofiber-encapsulated sulfur cathodesPMID 21916442, cobalt sulfide (Co₃S₄) cathodesPMID 28837329, and polyacrylonitrile-sulfur composite cathodesPMID 30094909. Even lithium metal anodes with LiNi_0.8Co_0.15Al_0.05O₂ (NCA) cathodes with LiNO₃ added to the electrolyte showed higher coulombic efficiencies and suppressed dendrite formation compared to the electrolyte without LiNO₃.PMID 26325146

技术规格