Lithium bis(pentafluoroethanesulfonyl)imide, Li[N(SO₂C₂F₅)₂], a typical fluorochemical aimed at better electrochemical performance of battery electrolytes, in superheated water was studied for its waste treatment. When Li[N(SO₂C₂F₅)₂] was reacted in pure superheated water at 300 °C, little F^– ions were produced. In contrast, complete mineralization of the fluorine, sulfur, and nitrogen atoms in Li[N(SO₂C₂F₅)₂] was achieved when the reaction was performed in the presence of KMnO₄. Specifically, when Li[N(SO₂C₂F₅)₂] was treated for 18 h with 158 mM of KMnO₄, the F^– and SO₄^2– yields were 101 and 99%, respectively, and the sum of the NO₃^– and NO₂^– yields was 101%. In the gas phase, trace CO₂ was detected and no CHF₃, which has high global warming potential, was formed. Furthermore, the fluorine, sulfur, and nitrogen atoms in the analogues K[N(SO₂C₄F₉)₂] and K[N(SO₂CF₂)₂CF₂] also underwent complete mineralization using the same approach.

中文翻译：

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使用过热水有效矿化双（五氟乙磺酰）亚胺锂及相关电解质含氟化合物


双(五氟乙磺酰)亚胺锂，Li[N(SO ₂ C ₂ F ₅ ) ₂ ]，一种典型的含氟化合物，旨在电池电解质具有更好的电化学性能，在过热水中对其废物处理进行了研究。当Li[N(SO ₂ C ₂ F ₅ ) ₂ ]在纯过热水中于300 ℃反应时，很少产生F ^– 离子。相比之下，Li[N(SO ₂ C ₂ F ₅ ) ₂ 存在下进行时，实现了>]。具体来说，当Li[N(SO ₂ C ₂ F ₅ ) ₂ ]用158 mM KMnO处理18小时时 ₄ ，F ^– 和 SO ₄ ^2– 产率分别为 101 和 99%，NO ₃ ^– 和NO ₂ ^– 产率为101%。在气相中，检测到微量CO ₂ ，并且没有形成具有高全球变暖潜势的CHF ₃ 。此外，类似物 K[N(SO ₂ C ₄ F ₉ ) ₂ ] 中的氟、硫和氮原子K[N(SO ₂ CF ₂ ) ₂ CF ₂ ] 也采用相同的方法进行了完全矿化。