Electro Chemical
Storage Process
Thermal Runaway & Combustible
Thermal Runaway or Combustible
~90% (degrades over life)
Round Trip Efficiency
80% (degrades over life)
Usable Capacity
At least 20% over life, more if cycled more frequently
Degradation
4 - 8 hours - w/o impacting cycle life or capacity
Rate of Charge/Discharge
0° C to 50° C
Temperature Change
3 year warranty
Cycle Life
High
Heat During Cycling
High
Energy Density
No
Recyclable/Renewable
Sodium-Ion
Storage Process
No
Thermal Runaway or Combustible
97-99% (constant over life)
Round Trip Efficiency
100% (constant over life)
Usable Capacity
Nil
Degradation
20 Minutes
Rate of Charge/Discharge
-100° C to 70° C
Temperature Change
12 year warranty
Cycle Life
Minimal
Heat During Cycling
High
Energy Density
Yes
Recyclable/Renewable
Elector Chemical
Storage Process
Combustible
Thermal Runaway or Combustible
~70% (degrades over life)
Round Trip Efficiency
50-60% (degrades over life)
Usable Capacity
At least 20% over life, more if cycled more frequently
Degradation
10-20 hours - w/o impacting cycle life or capacity
Rate of Charge/Discharge
-20° C to 65° C
Temperature Change
1-3 year warranty
Cycle Life
High
Heat During Cycling
Medium
Energy Density
No
Recyclable/Renewable