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3 Key Components of Batteries: Revolution in Electric Vehicle (EVs)

Introduction

         Earlier, Electric vehicle was not in use we depended on fossil fuels for the fulfillment of daily life requirements. Fossil fuels are Coal, Petroleum, and Natural gas, which are present in solid, liquid, and gaseous form, respectively. There are certain drawbacks with them; these are carbon rich, increase CO2 levels, which causes global warming globally and they are non-renewable resources; therefore, it will be problematic in the future when it will become consumed. Along with that it also causes major impact on environment through air pollution, oil spills, and land degradation, etc. 

Key Component of Modern EVs

           Therefore, to eradicate this problem, we can use alternative options of environment friendly and renewable energy sources such as Solar energy, Wind energy, Hydropower, and Bioenergy etc. Our government also promotes to use of renewable energy sources and has started various schemes in such areas.

https://electricvehicles.in/

 

Electric Vehicle

         Nowadays, one of the fastest-growing sectors is electric vehicles (EVs). It can reduce the dependency on fossil fuels in daily life. EVs’ modern revolution started from the early 19th century, but in the 20th century especially after 2015th, it caught a boom because many countries plan to phase out fossil fuel cars by 2030 to 2040 to achieve climate goals. Therefore, the EV option increases rapidly, but there was a major challenge in making highly efficient, fast charging batteries. To achieve its high efficiency, three key components play it’s major role-

3 key components of a battery

There are three major key components of batteries: Anode, cathode and electrolyte, which are responsible for energy storage and release during charging and discharging processes.

 1. Anode (-)               

 

Releases electrons during discharge, usually
made of graphite or lithium metal  

 

 2. Cathode (+)    

Receives electrons during discharge, made of
materials like lithium cobalt oxide (LCO), LFP (Lithium Iron Phosphate), or NMC (Nickel Manganese Cobalt).

 3. Electrolyte                    

 

Moves lithium ions between anode and cathode, exists in Liquid,
gel, or solid, conducts ions but blocks electrons.     

Key component of batteries

 High Efficiency Batteries

Highly efficient batteries have several characteristic features. Here can easily understand the advanced features of highly efficient batteries by differentiating them from conventional batteries-

Feature 

Conventional Battery 

High-Efficiency
Battery
 

Type 

Lead-acid, older lithium-ion 

Advanced lithium-ion (e.g., NMC, LFP),
solid-state
 

Energy Density 

Low to moderate 

High (more energy stored per kg) 

Weight 

Heavier 

Lighter  

Charging Speed 

Slow to moderate 

Fast charging (80% in 30 min or less) 

Lifespan (charge cycles) 

300–1000 cycles 

2000–5000+ cycles 

Efficiency (charge–discharge) 

~80% 

90–98% 

Temperature Sensitivity 

Performs poorly in extreme weather 

Better thermal control and performance 

Safety 

Can overheat or leak 

(lead-acid) 

Advanced safer 

(LFP, Solid-state) 

Cost 

Cheaper

Costly 

Environmental Impact 

More pollution, harder to recycle 

Less toxic, increasingly recyclable 

Use Case 

Common Battery Type 

Old Cars 

Lead-acid 

Basic Electric Vehicle 

Standard lithium-ion 

Modern Electric vehicle 

NMC (Nickel Manganese Cobalt), LFP (Lithium
Iron Phosphate)
 

Future Electric Vehicle 

Solid-state batteries 

Type of modern batteries with key components: 

By modifying these key components nowadays, we can develop a kind of highly efficient battery.

Battery Type

Anode

Cathode

Electrolyte

LFP

Graphite

Lithium Iron Phosphate

Liquid Lithium Salt 

NMC

Graphite

Nickel Manganese Cobalt

Liquid Lithium Salt 

Solid-State

Lithium metal

Varies (e.g. LFP, NMC)

Solid ceramic/polymer 

High-Nickel NMC (Nickel Manganese Cobalt):

These cathodes offer high voltage and capacity, supporting rapid charge and discharge cycle. It’s costly due to usage of cobalt and nickel. There are several variants are designed based on their chemistry, such as NMC 333, 622, and 811.

NiMnCo Batteries

 

LFP ( Lithium Iron Phospate) 

It is also an high efficient, more safer and having less energy density than NMC batteries. Due to their lower prize it’s highly adopted in affordable EVs. 

LiFePO4 battery

Solid state batteries: 

It is future of energy storage to make more efficient EVs. It can store more energy in smaller size because Anode – Electrolyte Cathode ( all solid). Due to their characteristic features it is more safer ( noninflammable) and efficiently works at extreme temperatures also. 

Solid State batteries


 Batteries Used in Affordable Electric Vehicle

Affordable electric vehicles (EVs), especially in markets like India, China, and Southeast Asia, commonly use LFP batteries (Lithium Iron Phosphate) due to their balance of safety, cost, and durability. 

 

Region 

Examples 

India 

Tata Nexon EV, Ola S1 Pro, MG Comet EV 

China 

BYD Dolphin, Wuling Mini EV 

Global 

Tesla Model 3 & Model Y (base
versions), BYD
Atto 3 

https://www.tesla.com/model3          https://ev.tatamotors.com/nexon/ev.html       https://www.olaelectric.com/

Tata Nexon EVTesla model3Ola S1 Pro

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