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Lithium ion Battery Introduction- LiMn2O4

(Summary description)lithium ion battery types LiMn2O4 introduction

Lithium ion Battery Introduction- LiMn2O4

(Summary description)lithium ion battery types LiMn2O4 introduction

  • Categories:Industry information
  • Author:Vicky
  • Origin:Battery university
  • Time of issue:2019-10-22 12:00
  • Views:56
Information

Lithium manganese oxide, has the chemical symbols LiMn2O4 and the abbreviation LMO. The battery consists of a manganese oxide cathode and a graphite carbon anode. The cathode crystalline formation of lithium manganese oxide has a three-dimensional framework structure that appears after initial formation.

 

 

The architecture forms a three-dimensional spinel structure that improves ion flow on the electrode, which results in lower internal resistance and improved current handling. Spinel provides low resistance but has a more moderate specific energy than cobalt.  A further advantage of spinel is high thermal stability and enhanced safety, but the cycle and calendar life are limited.

 

Low internal cell resistance enables fast charging and high-current discharging. In an 18650 package, Li-manganese can be discharged at currents of 20–30A with moderate heat buildup. It is also possible to apply one-second load pulses of up to 50A. A continuous high load at this current would cause heat buildup and the cell temperature cannot exceed 80°C (176°F). Li-manganese is used for power tools, medical instruments, as well as hybrid and electric vehicles.

 

 

Summary Table

Voltages 3.70V (3.80V) nominal; typical operating range 3.0–4.2V/cell
Specific energy (capacity) 100–150Wh/kg
Charge (C-rate) 0.7–1C typical, 3C maximum, charges to 4.20V (most cells)
Discharge (C-rate) 1C; 10C possible with some cells, 30C pulse (5s), 2.50V cut-off
Cycle life 300–700 (related to depth of discharge, temperature)
Applications Power tools, medical devices, electric powertrains
Comments High power but less capacity; safer than Li-cobalt; commonly mixed with NMC to improve performance.

 

 

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