Week 1 Understanding Different Battery Chemistry

Battery generally would consists of an anode,cathode,electrolyte and a seperator which prevents contact between the two electrodes.

Anode and Cathode are the two terminals were reduction and oxidation occurs respectively while charging and vice-versa during discharge.

Oxidation: removal of electrons or addition of hydrogen

Reduction: addtion of electrons or removal of hydrogen

Electrolytes are usually Acid/Base/Salt+Distilled water.These acts as a bridge between catode and anode by permitting transfer of positive ions(cations) during charge and discharge.

Charging:

At cathode:oxidation,possitive ions gets dissolved in electrolyte

At anode:redution,positive ions from electrolyte settles.

Discharge:

At anode: oxidation,possitive ions gets dissolved in electrolyte

At cathode:reduction,positive ions from electrolyte settles.

Li Ion batteries can be classified based on various materials used for cathode and anode,which are as follows.

Elecrolytes are generally:

CHEMICAL REACTIONS DURING DISCHARGE:

LCO:

LMO:

NMC:

LFP:

NCA:

LTO: