Technology

Advanced Materials
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Advanced Materials

Focus on developing advanced technologies in the energy field, actively collaborating with well-known worldwide manufacturers, SYNergy’s commitment to top quality, product, service differentiation, and innovations. The battery portfolio has been awarded with recognition of reliability and excellent performance.

With interdisciplinary and comprehensive R&D team, SYNergy is also available with certified laboratories to support variety of analysis and testing. By providing high-quality and the most complete range, SYNergy’s Lithium-Ion Batteries and Lithium-Ion Polymer Batteries can satisfy the growing demands of rechargeable batteries.



- High voltage material -

Designed with high anti-oxidation materials, devotes to develop the high-voltage system and also increase energy density and fast charge performance to achieve the best cost-performance.




- Multilayer coating separator -

SYNergy adopted multilayer coating separator which is helpful to form the stable interface, effectively reducing the lithium ion transmission distance, slowing down the resistance increase, and simultaneously providing high safety performance.



Material Alumina Boehmite PVDF-HFP Alumina + PVDF-HFP Aramid Layer
PE base (um) 5.0 - 9.0 5.0 - 9.0 5.0 - 9.0 5.0 - 9.0 5.0 - 9.0
Coating single side (um) 2.0 - 4.0 2.0 - 4.0 1.0 - 3.0 1.0 - 3.0 1.5 - 3.5
Characteristic High heat resistance
Low moisture
Interface bonding
Cell structure is s stable
Long-term cycling performance
High heat resistance
High withstand voltage
High safety
Morphology



- High resistance to oxidation electrolyte -

Electrolyte, as the major liquid in the battery, high anti-oxidant electrolyte is introduced, and functional additives are mixed to endow cell critical characteristics, greatly increase battery efficiency, and ensure battery life.

Possible Mechanisms FEC VC PS SN AND DENE HTCN LiDFOB
For Anode Forming SEI on Anode Δ Δ Δ Δ
Reducing anode impedance  Δ X X X X X X
For Cathode Forming CEI on  Cathode O Δ Δ Δ Δ O Δ Δ
Inhibiting the dissolution of metal ions Δ X O ?
Inhibiting electrolyte oxidation  O ? ? ?
Reducing cathode impedance Δ ? ? ?
Excellent(◎)  Good(O)  No effect(Δ)  Bad(X)  Unknown(?)



- NMC material & SiOx/C Composite material -

NMC material possesses advantages, e.g. lower cost and high specific capacity (mAh/g). This cathode can be utilized with the collocation of SiOx/C composite anode materials because SiOx provides high capacity (mAh/g), and carbon can inhibit volume expansion of Si particle after Li intercalation to not only improve conductivity, but also avoid Si’s agglomeration.

System Coin Cell Type Voltage (V) Typ. Capacity (mAh)
NMC+SiOx/C CL1054H1 4.35 51
CL1154H1 4.35 63
CL1254H1 4.35 79
CL1454H1 4.35 113
CL1254H2 4.35 86
CL1254-2 4.20 90
LCO+AG
CL1154 4.20 48
CL1154H 4.35 55
CL1254 4.20 60
CL1254H 4.35 70
CL1254W 4.40 74
CL1254Z 4.45 76


Reliability Test
Item Condition Result
OK NG
Basic measurement - O  
Discharge performance  0.2C ~ 2.0C discharge O  
Discharge performance  60℃ & -10℃ O  
-20℃ ~ 60℃ O  
Cycle life 1.0CC / 1.0CD O  
2.0CC / 0.5CD O  
Storage @ Room  temp.  100%SOC.28days
50%SOC.28days
0% SOC.28days
O  
Storage @ 60℃/95%RH 100% SOC.7 days O  
Storage @ 85℃  100% SOC.4hrs O  
Safety Test
Item Condition Result
OK NG
Nail  100%SOC @Room  temp.  O  
Impact 100%SOC @Room  temp.  O  
Crush 100%SOC @ Room  temp.  O  
Free fall 100%SOC @ Room  temp.  O  
Shock 100%SOC @ Room  temp.  O  
Short-circuit  100%SOC @ 25℃ O  
Short-circuit  100%SOC @ 55℃ O  
Forced discharge  100%SOC @ 25℃ O  
Low pressure 100%SOC @ Room  temp.  O  
Vibration 100%SOC @ Room  temp.  O  
Abnormal charging  @3C/4.6V O  
Heating test 100%SOC @130℃/30mins O  
Reverse voltage charge - O  



- LCO v.s. NMC+SiO/xC -

Compared with LCO materials, the new types of NMC+SiOx/C design have the properties of a higher specific capacity and a lower discharge voltage, both safety and performance can be taken into account under high-voltage use.

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