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The Future of the EV Battery Technology

26-06-2024
The Future of the EV Battery Technology

The electric vehicle (EV) revolution is accelerating, and at its heart lies the battery. As we look to the future, the landscape of EV batteries is set to undergo dramatic changes, promising increased range, faster charging times and more sustainable solutions.

In the following article, we focus on what the future holds for batteries and examine current progression. We go beyond the chemistry to explore whether the EV world looks promising.


Diversification of Battery Chemistry

Currently, the EV market is dominated by lithium-ion batteries, particularly those using nickel, manganese, and cobalt (NMC) cathodes. 

The future will likely see more diverse battery chemistries tailored to different vehicle types and use cases.

We recently interviewed Professor Colin Herron, CBE, who is an electric vehicle expert. He discuses his views on the EV batteries. 


Lithium Ion Phosphate (LFP) Batteries: The Workhorses

LDP batteries, also known as LifePO4 batteries, are lithium-ion batteries that use lithium-ion phosphate (LiFePO4) as the cathode material. 

Profession Colin, a respected expert in the field, emphasises that LFP batteries are particularly useful in applications where energy density is less critical.

colin heron
Dr Colin Herron
Professor of Practice at Newcastle University
We might see LFP batteries becoming more prevalent in buses, trucks, and smaller cars in the near future.

To answer why? Because LFP batteries are known for their longevity, safety, and lower cost. They are the workhorses of the battery world. They are perfect for vehicles that prioritise reliability and cost effectiveness over maximum range.

Sodium-Ion Batteries: Breaking the Lithium Dependency

One of the most exciting developments is the emergence of sodium-ion batteries. These batteries reduce our reliance on lithium, potentially offering a more sustainable and cost-effective alternative.

Leading companies like CATL and BYD are already making significant investments in sodium-ion battery technology. While these batteries may not yet match the energy density of lithium-ion, they are finding their niche in urban EVs and stationary storage applications, instilling confidence in their potential.

NMC Batteries: The Current Powerhouse

The NMC batteries is the type of battery that uses a combination of nickel, manganese, and cobalt in its cathodes, with the ratio of these elements determining the battery's performance characteristics.

NMC batteries offer a good balance of energy density, power, and lifespan, making them ideal for a wide range of vehicles.

Dr Colin Herron CBE
Dr Colin Herron
Professor of Practice at Newcastle University
We are likely to see NMC batteries continue to dominate in mid-range to high-end vehicles like Audis, BMWs, and Nissan Qashqai's, where their performance characteristics align well with consumer exceptions.

Solid-State Batteries: The Holy Grail

Solid-state batteries represent the pinnacle of battery technology. Unlike traditional lithium-ion batteries that use a liquid electrolyte, solid-state batteries use a solid material for ion conduction between the electrodes. 

 With the potential for higher energy density, faster charging, and improved safety, these batteries could revolutionize the EV industry.

Dr Colin Herron CBE
Dr Colin Herron
Professor of Practice at Newcastle University
We might see solid state batteries in high end vehicles like Aston Martins and Ferraris. The improved performance and prestige factor make them ideal for luxury and sports car markets.

A Tiered Approach to Battery Technology

The above analysis and the current market situations indicate that the EV market is evolving towards a tiered approach in battery technology, tailoring solutions to different vehicle types and price points. This stratification aims to optimise cost and performance across various market segments. The proposed tiers are:

  1. High-end luxury and sports cars: Solid-state batteries
  2. Mid-range vehicles: Advanced NMC (Nickel Manganese Cobalt) batteries
  3. Compact and economy cars: LFP (Lithium Iron Phosphate) batteries
  4. Commercial vehicles and buses: LFP or advanced sodium-ion batteries

Innovations Behind Chemistry

The future of EV batteries isn't just about new chemical compositions. We are seeing exciting developments in battery design and integration. 

Structural Batteries

Researchers are working on batteries that can serve as structural components of the vehicle, potentially reducing weight and increasing efficiency.

To know more, the UK's advanced propulsion centre is a good resource for exploring research into structural batteries.

Fast Charging Technologies

Innovations like carbon nanotube electrodes promise to dramatically reduce charging times, potentially bringing them in line with the time it takes to refuel a conventional vehicle.

Vehicle-to-Grid Integration

Future batteries will likely be designed with bi-directional charging capabilities, allowing EVs to serve as mobile power banks and contribute to grid stability.

The department for Business, Energy and Industrial Strategy provides more information on V2G developments in the UK.

Sustainability and Supply Chain Considerations

As the EV market grows, so does the concern over the sustainability and ethical sourcing of battery materials. 

The industry is responding with several initiatives:

Cobalt Free Batteries

Many manufacturers are working on reducing or eliminating cobalt from their batteries due to supply chain and ethical concerns.

Recycling and Second-Life Applications

Improved recycling technologies and the use of EV batteries in second-life applications (like stationary storage) will be crucial for sustainability.

Alternative Material Sourcing

From extracting lithium from seawater to using silicon from barley husk ash, researchers are finding innovative ways to source battery materials more sustainably.


The Road Ahead

The future of EV batteries is bright and diverse. We're moving towards a world where battery technology is tailored to specific use cases, balancing performance, cost, and sustainability. As these technologies mature, we can expect EVs to become more accessible, practical, and environmentally friendly.

The race to develop better EV batteries is often called the next gold rush, and for good reason. The winners in this technological race will shape the future of transportation and play a crucial role in our transition to a sustainable energy future [Source: IEA Global EV Outlook 2024].

As consumers, we can look forward to EVs that charge faster, go further, and have a lighter environmental footprint – truly ushering in a new era of mobility.


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