Challenge

Week 1 Understanding Different Battery Chemistry

JJacob Madanu4 Nov 2022

1. Introduction

Li-ion Batteries

A lithium-ion battery or Li-ion battery is a type of rechargeable battery. Lithium-ion batteries are commonly used for portable electronics and electric vehicles and are growing in popularity for military and aerospace applications.

Similar to the lead- and nickel-based architecture, lithium-ion uses a cathode (positive electrode), an anode (negative electrode) and electrolyte as conductor. The cathode is a metal oxide and the anode consists of porous carbon. During discharge, the ions flow from the anode to the cathode through the electrolyte and separator; charge reverses the direction and the ions flow from the cathode to the anode.

Lithium-ion cells , in their most common form, consist of a graphite anode, a lithium metal oxide cathode, and an electrolyte of a lithium salt and an organic solvent. Lithium is a good choice for an electrochemical cell due to its large standard electrode potential (–3.04 V) resulting in a high operating voltage (which helps both power and energy) and the fact that it is the metal with the lowest density (which reduces weight).

Types	Chemical name	Cathode material	Chemical Reaction at the cathode(discharge)	Anode material	Chemical Reaction at the anode(discharge)	Overall reaction
Lithium Cobalt Oxide (LCO)	LiCoO₂	Lithium Cobalt Oxide		Graphite carbon
Lithium-ion manganese oxide battery (LMO)	LiMn₂O₄	Lithium manganese oxide		Graphite carbon
Lithium nickel cobalt aluminium oxides (NCA)	LiNiCoAlO₂	Lithium Nickel Cobalt Aluminum Oxide		Graphite carbon
Lithium Nickel Manganese Cobalt Oxide (NMC)	LiNiMnCoO₂	Lithium Nickel Manganese Cobalt Oxide		Graphite carbon
Lithium iron phosphate battery(LFP)	LiFePO₄	Lithium iron phosphate		Graphite carbon
Lithium-titanate-oxide (LTO) battery	Li₂TiO₃	Manganese oxide		Lithium titanium oxide

1).LCO (Lithium cobalt oxide) Battery

LCO (Lithium cobalt oxide) was invented in the year 1991. Its anode material is LiaC6, the cathode material is LibCoO2 and the carrier is Li+.It is used in various applications ranging from electronic devices to all laptops and phone batteries. The majority of lithium-ion batteries for portable devices are cobalt-based. The system contains a cobalt oxide cathode (positive electrode) and graphite carbon anode (negative electrode).

2)Lithium-ion manganese oxide (LMO)battery

A lithium-ion manganese oxide battery (LMO) is a lithium ion cell that uses manganese dioxide, Mno2, as the cathode material. They function through the same de-intercalation mechanism as other commercialized secondary battery technologies, such as LiCoO2. Cathodes based on manganese-oxide components are earth-abundant, inexpensive, non-toxic, and provide better thermal stability.

3)Lithium nickel cobalt aluminium oxides (NCA) battery

Lithium nickel cobalt aluminum oxide battery, or NCA, has been around since 1999 for special applications. It shares similarities with NMC by offering high specific energy, reasonably good specific power and a long life span.

4)Lithium Nickel Manganese Cobalt Oxide (NMC) battery

What is an NMC battery? In short, NMC batteries offer a combination of Nickel, Manganese and Cobalt. They are sometimes known as Lithium Manganese Cobalt Oxide batteries. NMC batteries have a high specific energy or power.

5)Lithium iron phosphate battery(LFP) batteries
LFP batteries stands for Lithium iron phosphate(LiFePO₄) batteries, which is known as li-phosphate batteries as well. They use phosphate as cathode material. In addition, they benefit from the low resistance properties that enhance their thermal stability and safety.

6)Lithium-titanate-oxide(LTO) battery

The lithium-titanate-oxide (LTO) battery is a type of rechargeable battery which has the advantage of being faster to charge than other lithium-ion batteries, but the disadvantage of having a much lower energy density.

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

Lithium-ion battery Types	SP	SE	SF	LS	CS	PF
Lithium Cobalt Oxide	L	H	L	L	L	M
Lithium Manganese Oxide	M	M	M	L	L	L
Lithium Nickel Manganese Cobalt Oxide	M	H	M	M	L	M
Lithium Iron Phosphate	H	L	H	H	L	M
Lithium Nickel Cobalt Aluminum Oxide	M	H	L	M	M	M
Lithium Titanate	M	L	H	H	H	H

SP stands for specific power
SE stands for specific energy
SF stands for safety
LS stands for lifespan
CS stands for cost
PF stands for performance
L stands for low
M stands for moderate
H stands for high

Summary of the Table

Lithium Cobalt Oxide has high specific energy compared to the other batteries, making it the preferred choice for laptops and mobile phones. It also has a low cost and a moderate performance. However, it is highly unfavorable in all the other aspects when compared to the other lithium-ion batteries. It has low specific power, low safety, and a low lifespan.

Lithium Manganese Oxide has moderate specific power, moderate specific energy, and a moderate level of safety when compared to the other types of lithium-ion batteries. It has the added advantage of a low cost. The downsides are its low performance and low lifespan. It is usually used in medical devices and power tools.

Lithium Nickel Manganese Cobalt Oxide has two major advantages as compared to the other batteries. The first one is its high specific energy, which makes it desirable in electric powertrains, electric vehicles, and electric bikes. The other is its low cost. It is moderate in terms of specific power, safety, lifespan, and performance when compared to the other lithium-ion batteries. It can be optimized to either have high specific power or high specific energy.

Lithium Iron Phosphate only has one major disadvantage when compared to other types of lithium-ion batteries, and that is its low specific energy. Other than that, it has moderate to high ratings in all the other characteristics. It has high specific power, offers a high level of safety, has a high lifespan, and comes at a low cost. The performance of this battery is also moderate. It is often employed in electric motorcycles and other applications that require a long lifespan and a high level of safety.

Lithium Nickel Cobalt Aluminum Oxide offers one strong advantage compared to the five other batteries: high specific energy. It is pretty moderate in the rest of the characteristics like performance, cost, specific power, and lifespan. The only downside to this battery type is its low level of safety. Its high specific energy and moderate lifespan make it a good candidate for electric powertrains.

Lithium Titanate offers high safety, high performance, and a high lifespan which are very important features every battery should have. Its specific energy is low compared to the five other lithium-ion batteries, but it compensates for this with moderate specific power. The only major disadvantage of lithium titanate as compared to the other lithium-ion batteries is its extremely high cost. Another important feature of this battery worthy of mention is its remarkably fast recharge time. It can be used for storing solar energy and creating smart grids.

Week 1 Understanding Different Battery Chemistry

1.

Introduction

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1.

Introduction

Ship work like thisin your own course.

Talk to a career counsellor

Ship work like this
in your own course.