Week 1 Understanding Different Battery Chemistry
Answer 1.
| Battery types | Material |
|
LCO |
Cathode=Lithium Cobalt Oxide Anode=Carbon or graphite |
|
LMO |
Cathode=Lithium Manganese Oxide Anode=Carbon or graphite |
|
NCA |
Cathode=Nickle Cobalt Aluminum Anode=Carbon or graphite |
|
NMC |
Cathode=Nickel Manganese Colbalt Anode=Carbon or graphite |
|
LFP |
Cathode=Lead iron phosphate Anode=Carbon or graphite |
|
LTO |
Cathode=Lithium Titanium Oxide Anode=Carbon or graphite |
Graphite and hard carbon material are commonly use for anode.
Electrolyte ethelyne carbonate , propelyne carbonate, H2SO4,ZnCl2, nickel and aluminium foils aslo present in the battery along with separators.
1.Chemical reaction at Anode
Electrode through which the convetional current enter in to a polarised electrical device.
2.Chemical reaction at Cathode
Electrode through which the convetional current leaves an electrical device. While discharge, negative electrode gives up electron and gets oxidized. Whrere as while charging negative electrode accept electron and gets reduced.
Discharge and charge chemical reaction
Pb+PbO2+2H2OSO4< ---->2PbSO4+2H2O
During discharge, the positive electrode accepts electrons from the external circuit, a process by which the electrode is reduced. During charge, the positive electrode gives up electrons to the external circuit and is oxidized. During discharge positively charge ions or cations move through the electrolyte towards the positve electrode. And negative charge ions or anions move through the electrolyte towards the negative electrode.
Answer 2
Comparison of each type of Li+ion batteries based on their characteristics.
LCO, LMO, NCA, NMC, LFP and LTO are compared below and scale is given 0 to 5.
|
Battery types |
Cost | Specific Energy | Specific power | Safety | Performance | Life span |
|
LMO Lithium Manganese Oxide |
4 Less costlier as compared to NCA |
4 Normal in specific energy |
4 specific power average |
4 Good safety |
3 Performance is poor |
3 Life span is less |
|
NCA Nickle Cobalt Aluminum |
3 Expensive |
5 very good in specific energy |
5 very good in specific power |
3 Poor in safety |
4 Performance wise good |
5 Life span is high |
|
NMC Nickel Manganese Colbalt |
4 Less costlier as compared to NCA |
5 very good in specific energy |
4 specific power average |
4 Good safety |
4 Performance wise good |
4 Life span is normal |
|
LFP |
4 Less costlier as compared to NCA |
3 Bad in specific energy |
4 specific power average |
5 High level of safety |
4 Performance wise good |
5 Life span is high |
|
LTO |
2 Cheap in cost as compared to all other batteries |
3 Bad in specific energy |
4 specific power average |
5 High level of safety |
5 Very good in performances |
5 Life span is high |