Week 1 Understanding Different Battery Chemistry

Q1. Prepare a table which includes materials & chemical reactions occurring at the anode and cathode of LCO, LMO, NCA, NMC, LFP and LTO type of lithium ion cells.Give your detailed explanation on it

Types of Li-ion Battery	Anode Material	Cathode Material	Seperator	Electrolyte	Anode Chemical Reaction	Cathode Chemical Reaction	Overall Chemical Reaction
LCO (Lithium Cobalt Oxide)	Graphite Carbon	Lithium Cobalt Oxide	Polyolefin	Ethylene Carbonate	`LiC_6iffC_6+Li^++e^-`	`CoO_2+Li^++e^-iffLiCoO_2`	`LiCoO_2+C_6iffLiC_6+CoO_2`
LMO (Lithium Manganese Oxide)	Graphite Carbon	Lithium Manganese Oxide	Polyolefin	Lithium Haldie	`LiC_6iffC_6+Li^++e^-`	`MnO_2+Li^++e^-)iffLiMnO_2`	`LiMnO_2+C_6iffLiC_6+MnO_2`
NCA (Lithium Nickel Cobalt Aluminium Oxide	Graphite Carbon	Lithium Nickel Cobalt Aluminium Oxide	Polyolefin	Ethylene Carbonate	`LiC_6iffC_6+Li^++e^-`	`MiCoALO_2+Li^++e^-)iffLiMiCoALO_2`	`NiCoALO_2+LiC_6iffC_6+LiCoALO_2`
NMC (Lithium Nickel Manganese Cobalt Oxide)	Graphite Carbon	Lithium Nickel Manganese Cobalt Oxide	Polyolefin	Lithium Salt	`LiC_6iffC_6+Li^++e^-`	`NiMnCoO_2+Li^++e^-)iffLiNiMnCoO_2`	`LiC_6+NiMnCoO_2iffC_6+LiNiMnCoO_2`
LFP (Lithium Iron Phosphate)	Graphite Carbon	Lithium Iron Phosphate	Polyolefin	Ethylene Carbonate	`LiC_6iffC_6+Li^++e^-`	`FePo_4+Li^++e^-)iffLiFePo_4`	`LiC_6+FePo_4iffLiFePo_4+C_6`
LTO (Lithium Titanate Oxide)	Lithium Titanate Oxide	Lithium Manganese Oxide	Polyolefin	Lithium Salt	`Li_7Ti_5O_12iffTi_5O_12 +4Li^++4e^-`	`4Mn_2O_4+4Li^++4e^-)iff4LiMn_2O_4`	`Li_7Ti_5O_12+4Mn_2O_4iffTi_5O_12+4LiMn_2O_4`

Q2. Compare the differences between each type of Li+ion batteries based on their characteristics ?

Types of Lithium ion battery:

There are some types of lithium ion cells based on their chemical compositions and they are,

1. Lithium cobalt oxide - LiCO02 (LCO)

• Also known as lithium cobaltate or lithium-ion cobalt batteries, lithium cobalt oxide batteries are made from lithium carbonate and cobalt.
• They have a cobalt oxide cathode and use graphite carbon as their anode material; during discharge, lithium ions move from anode to cathode, with the flow reversing when the battery is charging.

This type of battery has some drawbacks, including a relatively short battery life and limited specific power. additionally, these batteries are not as safe as other types.

2. Lithium Manganese Oxide - LiMn204 (LMO)

• The first commercial lithium-ion cells made with lithium manganese oxide as a cathode material were produced in 1996 by Moli Energy.
• Lithium manganese oxide batteries are notable for their high temperature stability and are also safer than other lithium-ion battery types.
• For this reason, they are often used in medical equipment and devices, but they may also be used in power tools, electric bikes and more.
• It is also possible to use lithium manganese oxide batteries to power laptops and electric powertrain cars.

3. Lithium Nickel Cobalt Aluminum Oxide - LiNiCoAlO2 (NCA)

• Lithium nickel cobalt aluminum oxide batteries are also called NCA batteries, and are becoming increasingly important in electric powertrains and in grid storage.
• NCA batteries are not common in the consumer industry, but are promising for the automotive industry.
• NCA batteries provide a high-energy option with a good lifespan, but they are not as safe as they could be compared to other lithium-ion battery types and are quite costly.

4. Lithium Nickel Manganese Cobalt Oxide - LiMnCo02 (NMC)

• Also known as lithium manganese cobalt oxide or NMC batteries, include a cathode made of a combination of nickel, manganese and cobalt.
• Like other lithium-ion battery varieties, NMC batteries can have either a high specific energy density or a high specific power. They cannot, however, have both properties.
• This battery type is most common in power tools and in powertrains for vehicles.
• The cathode combination ratio is usually 60 percent nickel, 20 percent manganese and 20 percent cobalt. Thismeans that the raw material cost is lower than it is for other lithium-ion battery options, as cobalt can be quite expensive.
• These batteries may come down in price further in the future, as some battery makers are planning to switch their battery chemistry to a higher % of Nickel, so that they can use less cobalt.
• This battery type is commonly preferred for electric vehicles due to its very low self-heating rate.

5. Lithium Iron Phosphate - LiFePo4 (LFP)

• Lithium iron phosphate batteries, also known as li-phosphate batteries, use phosphate as a cathode. They benefit from low resistance properties, which enhance their safety and thermal stability.
• Other benefits include durability and a long lifecycle - fully charged batteries can be stored with little change to the total lifespan of the battery's charge.
• Li-phosphate batteries are often the most cost-effective option as well when their long battery life is taken into consideration.
• However, the lower voltage of the li-phosphate battery means that it has less energy than other types of lithium batteries.
• Accordingly, these batteries are often used in electric motorcycles as well as other applications that need a long lifecycle and significant safety.

6. Lithium Titanium Oxide - LiTiO2 (LTO)

• Finally, lithium titanate, also known as li-titanate, is a class of battery that allows for ever-increasing applications. the main advantage of the li-titanate battery is its remarkably fast recharge time.
• Currently, manufacturers of electric vehicles and bikes use li-titanate batteries, and there is potential for this type of battery to be used in electric buses for public transportation.
• However, these batteries have lower inherent voltage, or lower energy density, than other lithium-ion battery varieties, which can present issues with powering vehicles efficiently. Even so, the density of lithium titanate batteries is still higher than other non-lithium-ion batteries, which is a plus.

Types of Li-ion Battery	Nominal Voltage (V)	Life Cycle	Charge Current Rate	Discharge Current Rate	Specific Energy (WH/kg)	Advantage	Disadvantage	Application
LCO (Lithium Cobalt Oxide)	3 - 4.2	500 - 1000	0.7 - 1C	1C	150 - 200	High specific energy	Short life span, low thermal stability and limited load capabilities (specific power), Cobalt is expensive	Mobile Phones, Laptops and Digital Cameras
LMO (Lithium Manganese Oxide)	3 - 4.2	300 - 700	0.7 - 1C	1C	100 - 150	Lower internal resistance and improved current handling, high thermal stability and enhance safety	Cycle and Calendar life are limited	Power tools, Medical Devices, Electric Power Trains.
NCA (Lithium Nickel Cobalt Aluminium Oxide	3 - 4.2	500 - 1000	0.7C	1C	200 - 260	High specific energy, Reasonably good specific power, long life span.	High cost and marginal safety	Medical Devices, Industrial, Electrical Power Trains (Tesla).
NMC (Lithium Nickel Manganese Cobalt Oxide)	3 - 4.2	1000 above	0.7 - 1C	1 - 2C	150 - 220	Good overall performance and excels on specific energy, lowest self-heating rate	High Cost due to Cobalt	E-Bike, EV, Medical Devices, Industrial.
LFP (Lithium Iron Phosphate)	2.5 - 3.65	2000 above	1C	1C	90 - 120	High current rating and long cycle life, besides good thermal stability, enhance safety and tolerance if abused.	Higher self-discharge, less specific energy	Portable and Stationary needing high load currents and endurance
LTO (Lithium Titanate Oxide)	1.8 - 2.85	3000 - 7000	1C	10C	50 - 80	Fast charging, safe, high discharge current of 10C.	Low specific energy	UPS, Electrical Power Train (Mitsubishi i-MiEV, Honda Fit EV), Solar-Powered Street Light