Lithium Tetrafluoroborate
四氟硼酸鋰(LiBF4)為白色或微黃色粉末，極易溶于水，在碳酸酯溶劑、醚類化合物中有很好的溶解性，熔點在293-300℃之間，相對密度為0.852 g/cm3。四氟硼酸鋰具有較好的化學穩(wěn)定性和熱穩(wěn)定性，主要作為LiPF6基電解質(zhì)體系添加劑，改善循環(huán)壽命，提高鋰離子電池性能。在電解液中添加 LiBF4之后可拓寬鋰離子電池的工作溫度范圍，提高電池的高低溫放電性能。
Lithium Tetrafluoroborate (LiBF4) is white or yellowish powder, easily soluble in water, carbonate solvent and ethers compounds. The melting point of LiBF4 is 293-300℃, with the relative density of 0.852g/cm3. LiBF4 has excellent chemical and thermal stability and is mainly used as an additive in LiPF6 based electrolyte system to improve cycle life and performance of lithium batteries. By adding LiBF4 to the electrolyte, the operating temperature range of the lithium battery can be broadened and the high-low temperature discharge performance of the battery can be improved.
| 項目 Items | 單位 Units | 指標 Specification |
| 四氟硼酸鋰Lithium tetrafluoroborate | ω/% | ≥99.9 |
| 水分Moisture | ω/% | ≤0.0050 |
| 硫酸鹽（以SO4計）Sulfate | mg/kg | ≤30 |
| 氯化物（以Cl計）Chlorid | mg/kg | ≤30 |
| 鐵（Fe）Iron | mg/kg | ≤10 |
| 鉀（K）Kalium | mg/kg | ≤30 |
| 鈉（Na）Sodium | mg/kg | ≤30 |
| 鈣（Ca）Calcium | mg/kg | ≤30 |
| 鉛（Pb）Plumbum | mg/kg | ≤10 |
LiBF4已廣泛應用于當前的電解液中，主要用作LiPF6基電解質(zhì)體系添加劑和電解液中成膜添加劑，添加LiBF4之后可拓寬鋰離子電池的工作溫度范圍，更適合在極端環(huán)境（高溫或低溫）下使用。
LiBF4 is widely used in current electrolytes, it is mainly used as an additive in LiPF6 based electrolyte systems and as a film-forming additive in electrolytes. The addition of LiBF4 can broaden the working temperature range of lithium battery and make it more suitable for extreme environment (high or low temperature).
四氟硼酸鋰在密閉、干燥條件下進行包裝。凈含量不大于10kg的產(chǎn)品采用耐腐瓶包裝，外用鋁塑膜袋抽真空包裝。凈含量不小于25kg的產(chǎn)品氟化塑料桶包裝。
LiBF4 is packed under closed and dry conditions. Products with a net content of less than 10kg are packed in corrosion-resistant bottles, then vacuum packaging with Al-laminated film. Products with a net content of at least 25kg are packed in fluorinated plastic barrels.
