Lithium Ion vs Lithium Polymer | Difference between Lithium Ion and Lithium Polymer
This page compares Lithium Ion vs Lithium Polymer and mentions difference between Lithium Ion and Lithium Polymer.
Lithium Ion Battery
Following are the features of Lithium Ion battery.
• It is one of the rechargeable battery type used in home electronics.
• In Lithium Ion battery, lithium ions move from negative electrode towards positive ones during discharge phase and back during charging phase.
• The battery uses intercalated lithium compound as one of the electrode material.
• The battery cell houses electrolyte and two electrodes. The electrolyte allows ionic movement.
• They have silent features such as higher energy density, lower self discharge and tiny memory effect.
Lithium Polymer Battery
Following are the features of Lithium Polymer battery.
• This battery is also rechargeable one and uses lithium-ion technology.
• But It uses polymer electrolyte instead of liquid one as used in lithium-ion battery. Semi-solid polymers having high conductivity is used as electrolyte in Li-Po battery.
• This battery type provides high specific energy compare to other lithium batteries.
• These batteries are widely used in device requiring less weight such as smart phones, very thin laptops, electronic gadgets etc.
Both are secondary type batteries with voltage ratings 3.6V & 7.2V. Both supports recharge life of about 300 to 400 cycles. Following table mentions difference between Lithium Ion and Lithium Polymer battery types.
|Specifications||Lithium Ion||Lithium Polymer|
|Energy density, WH/Kg||Higher, 100 to 250||Lower, 130 to 200|
|Cost||Cheap||Expensive , almost double than Li-Ion|
|Chances of explosion when overcharged||Like to explode if do not handle with care||Safe from explosion|
|Life||Charging capacity is reduced over time. Life span < 100 times||It does not lose its charging capacity as much as compare to Lithium Ion. Life span > 1000 times|
|Duration of charging||Long||Short|
|Weight||Heavier||Light in Weight|
|Conversion rate||About 85 to 95 %||About 75 to 90 %|
|Nominal cell voltage||3.2 V||3.7 V|
|Safety concern||Not stable||Stable|
|Environment concern||Very dangerous||Somehow|
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