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电解液系列Electrolyte
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YH-61系列储能电池电解液

冰河冷媒     2017-11-15
储能电池用电解液
YH-61系列储能电池电解液
特性与应用
该系列产品是针对锰酸锂及磷酸铁锂储能型电池研发设计,适用于方形和软包电池。其特点是:常温循环性能好,容量发挥充分,高低温性能优良。 
 
电解液组分
EC、DMC、EMC、LiFP6及功能型添加剂
 
物理性能技术指标
检测项目 单位 技术指标 检测方法
水分含量 ppm ≤15 KarlFischer库伦法
游离酸(以HF计) ppm ≤50 酸碱滴定法
密度(25℃) g/mL 1.23±0.03 密度瓶法
电导率(25℃) mS/cm 9.50±0.3 电导率仪
单项金属杂质 ppm ≤5 ICP-Mass
色度 / 无色或淡黄色 目视
 
电池基本性能
循环性能
1CC/1CD,100周循环容量保持率≥95%;500周容量保持率≥90%;
800周循环容量保持率≥88%;1000周容量保持率≥81%
低温性能
-20℃静置24h后,0.2C放电容量保持率≥70%
高温性能
55℃存放30d后,膨胀率<3%,容量恢复率≥92.9%
55℃1C循环500周容量保持率≥80%
安全性能
3C/5V过充、针刺、挤压,电池不冒烟、不起火、不爆炸
 
 
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Electrolyte for Li-ion energy storage battery
YH-61 series of electrolyte for Li-ion energy storage battery
Characteristic&Application
  This series of electrolytes are researched and designed for Li-ion energy storage battery using  LiMn2O or LiFePOas cathode material,which are suitable for prismatic and soft package cell. The characteristics of the battery using YH-61 electrolyte include good cycle life at ambient temperature , good performance at high or low temperature and well comprehensive performance.                                                                                               
Composition
EC,DMC,EMC,LiFP6,additive,etc.
 
Technical Indicator of Physical Properties

 

Item Unit Technical Indicator Testing Method
Moisture content ppm ≤15 KarlFischer method
Hydrofluoric acid ppm ≤50 Acid-base titration
Density(25℃) g/mL 1.23±0.03 Pycnometer method
Conductivity(25℃) mS/cm 9.50±0.3 Conductivity meter
Single metal impurity ppm ≤5 ICP-Mass
Colority / Colorless to pale yellow Visual

 
Physical Properties

 

 

Cycle Performance
The capacity retention rate after 100,500,800 and 1000 cycles are equal or greater than 95%,90%,88% and 81% respectively under 1CC/1CD.
Low Temperature Performance
After stored at -20℃ for 24 hours,the capacity retention rate of the fully charged battery is equal orgreater than 70% under 0.2C.
High-low Temperature Performance
After stored at 55℃ for 30 days,the swelling rate is equal or less than 3% and the capacity recovery rate of the fully charged battery is equal or greater than 92.9%.
The capacity retention rate is equal or greater than 80% under 1CC/1CD after cycled at 55℃for 500 times.
Safety Performance
Smokeless,nonflammable,inexplosive under 3C/5V overcharging,pierced by a needle or extruding.

 


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