Monday 29 April 2013

Comparison of different cathode and anode materials for lithium ion batteries


Material
Chemical formula
Advantages
Disadvantages
Lithium Cobalt
LiCoO2
High Power Applications, High working voltage, high rate capability, Reasonably good cycle life.

Capacity > 140mAh/g.
High cost, lower safety
Lithium Nickel Cobalt Aluminum Oxide (NCA)

LiNi0.8Co0.15Al0.05O2
High Energy Density use, Reasonably good cycle life, Slightly better safety than lithium cobalt oxide.

Capacity >185mAh/g.
Hard to process, Higher cost, swells at high temperatures.
Lithium Nickel Manganese Cobalt  Oxide (NCM)

LiNi0.33Mn0.33Co0.33O2
High energy density applications, Reasonably good cycle life, Less expensive, Safer than Lithium Cobalt Oxide.

Capacity > 144mAh/g.
Low working Voltage
Lithium Manganese Oxide
LiMn2O4
High power applications. Long cycle life, high safety and low cost. 

Capacity > 95mAh/g.
High temperature performance, low energy density.
Lithium iron phosphate (LFP)
LiFePO4
High power applications. Long cycle life, High safety,

Capacity > 125mAh/g.
Poor energy density, Low operating voltage, low temperature performance.
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