二氟草酸硼酸锂（LiODFB cas 409071-16-5）在电解液常用溶剂中的电化学行为研究

 二氟草酸硼酸锂简称LiODFB，CAS No.:409071-16-5，是一种白色结晶固体，是最近几年发展起来的一种新型电解质锂盐。这种新型电解质锂盐，因为能够改善锂电池的低温循环性能，有望在动力电池行业得到广泛的应用。

我们利用自身独特的技术，制备得到了高纯的二氟草酸硼酸锂，然后进行了一系列的测试，测试结果与参考文献基本一致。

现引述文献结论如下：

(1) LiODFB has higher thermal stability and much less free acid content, and released CO2  possibly provides good safety of cells.

(2) The cells using LiODFB-based electrolyte have lower capacity fade than the cells using LiPF6-based electrolyte after 100 cycles at         55 ℃, and higher initial capacity retention at the elevated temperature.

(3) At 0.5C and 1C discharge rates, the rate capability of the cells with the LiODFB-based electrolyte is almost the same as that of the       cells with the LiPF6-based electrolyte after 20 cycles,and the gap between the two cells is tiny.

(4) Interface properties of the cells show that LiODFB is reduced and forms a thickening and protective SEI film on the negative            electrode. Although this can increase the impedance of SEI film, the cells still can provide a preferable rate performance. More work    is needed to carry out in the lithium battery of commercialization in the future.

另外通过实验也明确了二氟草酸硼酸锂在电解液常用溶剂 EC、DMC中的溶解性能。 

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