Discussion on Chemical, Electrical ,Mechanical and Chemistry: Li-Ion Batteries.

Write 10 pages with APA style on Chemical, Electrical ,Mechanical and Chemistry: Li-Ion Batteries. Like most other batteries Li-ion batteries are also made of an anode, a cathode, and an electrolyte. The anode of Li-ion batteries is made of Carbon, usually Graphite. the cathode is made of metal oxide whereas the electrolyte is a Lithium salt as mentioned earlier. The oxidation potential of LiClO4 and LiPF6 is around 3.0 to 6.0 V in different solvents. The conductivity of the above electrolytes ranges from 10 mS/cm to 14 mS/cm at temperatures ranging from 68°F to 104°F. The organic solvents usually decompose on the anodes during charging but some solvents such as ethylene carbonate decompose to form a much stable solid layer on the anodes.
Ans 3: The composition of the Li-Polymer battery electrolyte is the same as the Li-ion except that the Lithium Salt is held in a solid polymer composite instead of the organic solvent. The common solid polymer composites used are Polyethylene oxide and Polyacrylonitrile. Some of the salts used are Lithium Perfluorosulphonimide (Li(CF3SO2NSO2CF3)) and Lithium Trifloromethane Sulfonate Salt(LiCF3SO3).
Ans 4: The anode of Li-Polymer batteries is usually made of Lithium Cobalt Oxide (LiCoO2) or Lithium Manganese Oxide (LiMn2O4) whereas the cathode comprises of Lithium. The oxidation potential of these electrolytes varies from 2.7 to 4.23 V. Lithium Polymer batteries have stable ionic conductivity at high temperatures than Lithium-ion batteries hence making them suitable for long-term use in high-temperature environments. The best ionic conductivity in Li-Polymer batteries is achieved when Lithium Perfluorosulphonimide salt is used in the electrolyte due to extensive charge delocalization of its anion.
Most of the Li-Polymer cells must be charged carefully up to 4.2 V and they must be recharged once the voltage drops to 3.0 V. The batteries come with a variety of electrode configurations. Some of the batteries use Li metal strip as the cathode whereas others use carbon-Li intercalation compound in which Li+ ions form a coating over a carbon cathode after the first charge.
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