浩瀚气相色谱仪测定锂离子电池电解液中碳酸酯类含量GC7990

Lithium activity is high, easy to react with the electrolyte solution, resulting in high pressure, causing danger. As lithium and water can react violently, so lithium-ion batteries must use non-aqueous electrolyte, the current use of a wide range of carbonate organic solvents. The choice of electrolyte solvent will directly affect the performance of lithium-ion batteries. The carbonic acid ester solvents used as the electrolytes include ethylene carbonate (EC), propylene carbonate (PC), dimethyl carbonate (DMC), diethyl carbonate (DEC), methyl ethyl carbonate (EMC) and carbonic acid Vinyl ester (VC) and the like. Low viscosity solvents (such as DMC, DEC, EMC, etc.) and high dielectric constant solvents (such as EC, PC, etc.) mixed by a certain percentage of the composite solvent to ensure conductive lithium salt in the solvent has sufficient solubility And good ion dissociation.
Tengzhou Xiangying Analytical Technology Co., Ltd. established the use of GC7990 gas chromatography determination of lithium-ion secondary battery electrolyte carbonate in the organic solvent method. In the range of determination, the correlation coefficient r of each carbonate solvent component is more than 0.999, the reproducibility of the method is good and the relative standard deviation of the peak area is less than 1%.
 锂的活性高，容易与电解质溶液发生反应，产生高压，造成危险。由于锂与水能够发生剧烈反应，因此锂离子电池必需使用非水溶液电解质，目前使用较广泛的是碳酸酯类有机溶剂。电解液溶剂的选择将直接影响锂离子电池的性能。作为电解质使用的碳酸酯类溶剂主要有碳酸乙烯酯（EC）、碳酸丙烯酯（PC）、碳酸二甲酯（DMC）、碳酸二乙酯（DEC）、碳酸甲乙酯（EMC）和碳酸亚乙烯酯（VC）等。低粘度的溶剂（如DMC、DEC、EMC等）和高介电常数的溶剂（如EC、PC等）按一定的比例混合而成的复合溶剂，从而保证导电锂盐在溶剂中有足够的溶解度和良好的离子解离度。
滕州市翔鹰分析技术有限公司建立了使用GC7990气相色谱测定锂离子二次电池电解液中碳酸酯类有机溶剂的方法。在测定范围内，各碳酸酯类溶剂组分相关系数r均大于0.999，方法的重现性好，峰面积相对标准偏差小于1%。

XiangyingGC7990plus features:
1 excellent performance, competitive price, to meet the customers' choice
2 multi industry adaptability
3 outstanding performance in all kinds of harsh environment
INJ
A variety of sampling ports can be equipped with: packed column inlet, shunt / non shunt capillary inlet,
Hydrogen flame ionization detector (FID)
Maximum use temperature: 400
The minimum detection limit: -12 = 2.5*10 g/s (n-C16)
Linear range: 107 (+ 10%)
 
XiangyingGC7990plus特点：

1. 卓越的性能，具有竞争力的价格，满足广大客户的选择
2. 多行业适应性
   3. 在各种苛刻环境下均表现出色

进样口
多种进样口可配：填充柱进样口、分流/不分流毛细管进样口、
氢火焰离子化检测器（FID） 
***高使用温度：400℃
***小检出限：≤2.5*10 -12 g/s(n-C16)
线性范围：107（±10%）