The Times Australia
The Times World News

.
The Times Real Estate

.

Batteries are the environmental Achilles heel of electric vehicles – unless we repair, reuse and recycle them

  • Written by Mehdi Seyedmahmoudian, Associate Professor of Electrical Engineering, Swinburne University of Technology
Batteries are the environmental Achilles heel of electric vehicles – unless we repair, reuse and recycle them

Electric vehicle advocates say the cars ultimately have a smaller carbon footprint[1] than their fossil-fuelled counterparts and could resolve our energy concerns for good. Well, fair enough, but questions arise when we dig into the inner layers of electrical vehicles and see how sustainable their components are. In fact, the batteries that power electric vehicles may also be their Achilles heel.

Batteries are the most expensive component[2] of an electric vehicle. If the battery pack is damaged, defective or simply old, this can lead to the vehicle being written off[3] prematurely. Tesla is even producing “structural[4]” battery packs described as having “zero repairability[5]”.

Increasingly scarce and valuable resources[6], such as lithium[7] and water, are needed to make these batteries. Despite this, they are often not designed[8] for ease of repair[9], reuse[10] or recycling[11]. This has significant environmental impacts, ranging from the mining for materials[12] and the water and energy used in making new batteries and vehicles, through to the hazardous waste from discarded batteries.

In other words, the answer to the question of “Are electric vehicles really eco-friendly?” largely depends on how we manage the downsides associated with their batteries. Changes in how we design, produce, use and recycle electric car batteries[13] are urgently needed[14]. These changes can ensure that, in solving the problem of fossil fuel emissions, we also minimise other environmental harms.

aerial view of lithium mine in northern Australia
Mining for the minerals that go into batteries, including lithium, cobalt, lead, nickel and copper, has big environmental impacts. AAP/Supplied by Fleet Space Technologies

Read more: Electric cars can clean up the mining industry – here's how[15]

Tackle the problems before they get too big

It’s important to resolve these issues now, while electric vehicles make up a small fraction of the global vehicle fleet. Even in world-leading Norway, only 20% of cars on the road[16] are electric. In Australia, fewer than 100,000[17] out of 20 million registered vehicles[18] are battery-powered.

Yet already we are wrestling with the emerging concerns about their batteries. The performance of lithium batteries in an electric vehicle can degrade to 70-80%[19] of its full capacity within six to ten years, depending on the owner’s driving routine. At that point, the battery is barely reliable as the main energy source of the vehicle. Repeated fast charging[20] can degrade a battery sooner.

Globally, about 525,000 batteries[21] will reach the end of their useful life for powering a vehicle by 2025. That number soars to over 1 million by 2030.

Read more: Can electric vehicle batteries be recycled?[22]

There’s life after EVs for batteries

However, the total lifetime of lithium batteries is 20 years[23]. This means the end of a battery’s usefulness in a vehicle doesn’t necessarily mean it has to be discarded. These retired batteries can have plenty of other uses.

So how much capacity does a retired battery still have? As an example, an energy storage made of five repurposed Chevrolet Volt batteries can meet two hours of peak-use energy demand for five houses[24]. The numbers become even more appealing for Tesla Model 3 batteries, which have three times the energy capacity[25] of the Chevrolet Volt’s.

That is a tremendous capacity still available in a retired battery. So why not use that?

And once the battery has reached the end of its useful life, most of the raw materials[26] used to make it can be recovered[27]. It is possible to extract over 95%[28] of the valuable metals like lithium, nickel, cobalt and copper. The European Union already requires electric vehicle batteries to be at least 50% recyclable[29] by weight, increasing to 65% by 2025.

However, the current lack of standardisation of battery packs presents a challenge for battery recycling[30]. There are many different physical configurations, cell types and cell chemistries.

a technician works on an electric vehicle battery with cars in the background
An electric vehicle battery is often not designed to be as easy to repair or recycle as it could be. Biana de Marchi/AAP

Read more: Designing batteries for easier recycling could avert a looming e-waste crisis[31]

Reuse has a long value chain

The good news is that battery reuse is not a fictional utopia. Carmaker Nissan is already doing it on Koshikishima[32], an island in south-western Japan. Batteries are recovered from electric vehicles, have their health assessed and then allocated to suitable second-life applications.

These batteries can be reused in a solar farm, as an emergency household power supply, or for an electric forklift in a warehouse. Research[33] shows this repurposing of batteries can get another 10-15 years’ use out of them. That’s a huge leap towards reducing their environmental impact.

So, who benefits from this scheme? Well, there’s a long list.

In the first row, electric vehicles owners benefit immediately if their used batteries can be sold for a good price.

In the longer run, the list of beneficiaries expands massively. Households can enjoy more reliable and cheaper energy simply by charging up their battery storage during off-peak hours for use at peak times when electricity costs are higher. As an initiative in Portugal showed, using repurposed electric vehicle batteries in this way could cut energy bills by 40%[34].

Reusing batteries is good news for the environment. Research[35] suggests reducing the demand for new batteries in this way could cut greenhouse gas emissions from making batteries by as much as 56%.

Read more: Cooperation with the US could drive Australia’s clean energy shift – but we must act fast[36]

two factory techicians working on an electric vehicle battery production line
Reusing electric vehicle batteries could greatly reduce the emissions and resources that go into making new batteries. Shutterstock

The long list of benefits of giving electric vehicle batteries a second life, then recycling their materials, is enticing. Given the scale of the potential economic and environmental gains, along with the countless jobs such work can create, batteries could be more generous in their afterlife than in their first incarnation in electric vehicles.

References

  1. ^ smaller carbon footprint (www.nytimes.com)
  2. ^ most expensive component (www.carexpert.com.au)
  3. ^ written off (www.carexpert.com.au)
  4. ^ structural (electrek.co)
  5. ^ zero repairability (www.reuters.com)
  6. ^ scarce and valuable resources (www.weforum.org)
  7. ^ lithium (www.eurekalert.org)
  8. ^ not designed (www.nature.com)
  9. ^ ease of repair (www.drive.com.au)
  10. ^ reuse (www.mckinsey.com)
  11. ^ recycling (knowablemagazine.org)
  12. ^ mining for materials (legal-planet.org)
  13. ^ recycle electric car batteries (norwegianscitechnews.com)
  14. ^ urgently needed (www.nature.com)
  15. ^ Electric cars can clean up the mining industry – here's how (theconversation.com)
  16. ^ 20% of cars on the road (europe.autonews.com)
  17. ^ fewer than 100,000 (www.theguardian.com)
  18. ^ 20 million registered vehicles (www.abs.gov.au)
  19. ^ degrade to 70-80% (www.nrel.gov)
  20. ^ Repeated fast charging (news.ucr.edu)
  21. ^ 525,000 batteries (www.sciencedirect.com)
  22. ^ Can electric vehicle batteries be recycled? (theconversation.com)
  23. ^ 20 years (www.sciencedirect.com)
  24. ^ two hours of peak-use energy demand for five houses (www.sciencedirect.com)
  25. ^ three times the energy capacity (www.sciencedirect.com)
  26. ^ most of the raw materials (blog.ucsusa.org)
  27. ^ can be recovered (eandt.theiet.org)
  28. ^ over 95% (thedriven.io)
  29. ^ at least 50% recyclable (eur-lex.europa.eu)
  30. ^ challenge for battery recycling (www.nature.com)
  31. ^ Designing batteries for easier recycling could avert a looming e-waste crisis (theconversation.com)
  32. ^ doing it on Koshikishima (global.nissanstories.com)
  33. ^ Research (www.sciencedirect.com)
  34. ^ cut energy bills by 40% (www.sciencedirect.com)
  35. ^ Research (www.sciencedirect.com)
  36. ^ Cooperation with the US could drive Australia’s clean energy shift – but we must act fast (theconversation.com)

Read more https://theconversation.com/batteries-are-the-environmental-achilles-heel-of-electric-vehicles-unless-we-repair-reuse-and-recycle-them-205404

The Times Features

Itinerary to Maximize Your Two-Week Adventure in Vietnam and Cambodia

Two weeks may not seem like much, but it’s just the right time for travelers to explore the best of Vietnam and Cambodia. From the bustling streets of Hanoi to the magnificent te...

How to Protect Your Garden Trees from Wind Damage in Australia

In Australia's expansive landscape, garden trees hold noteworthy significance. They not only enhance the aesthetic appeal of our homes but also play an integral role in the local...

Brisbane Homeowners Warned: Non-Compliant Flexible Hoses Pose High Flood Risk

As a homeowner in Brisbane, when you think of the potential for flood damage to your home, you probably think of weather events. But you should know that there may be a tickin...

Argan Oil-Infused Moroccanoil Shampoo: Nourish and Revitalize Your Hair

Are you ready to transform your hair from dull and lifeless to vibrant and full of life? Look no further than the luxurious embrace of Argan Oil-Infused Moroccanoil Shampoo! In a...

Building A Strong Foundation For Any Structure

Building a home or commercial building can be very exciting. The possibilities are endless and the future is interesting. You can always change aspects of the building to meet the ...

The Role of a Family Dentist: Why Every Household Needs One

source A family dentist isn’t like your regular dentist who may specialise in a particular age group and whom you visit only when something goes wrong. A family dentist takes proa...

Times Magazine

"Eternal Nurture" by Cara Barilla: A Timeless Collection of Wisdom and Healing

Renowned Sydney-born author and educator Cara Barilla has released her latest book, Eternal Nurture, a profound collection of inspirational quotes designed to support mindfulness, emotional healing, and personal growth. With a deep commitment to ...

How AI-Driven SEO Enhancements Can Improve Headless CMS Content Visibility

Whereas SEO (search engine optimization) is critical in the digital landscape for making connections to content, much of it is still done manually keyword research, metatags, final tweaks at publication requiring a human element that takes extensiv...

Crypto Expert John Fenga Reveals How Blockchain is Revolutionising Charity

One of the most persistent challenges in the charity sector is trust. Donors often wonder whether their contributions are being used effectively or if overhead costs consume a significant portion. Traditional fundraising methods can be opaque, with...

Navigating Parenting Arrangements in Australia: A Legal Guide for Parents

Understanding Parenting Arrangements in Australia. Child custody disputes are often one of the most emotionally charged aspects of separation or divorce. Parents naturally want what is best for their children, but the legal process of determining ...

Blocky Adventures: A Minecraft Movie Celebration for Your Wrist

The Minecraft movie is almost here—and it’s time to get excited! With the film set to hit theaters on April 4, 2025, fans have a brand-new reason to celebrate. To honor the upcoming blockbuster, watchfaces.co has released a special Minecraft-inspir...

The Ultimate Guide to Apple Watch Faces & Trending Wallpapers

In today’s digital world, personalization is everything. Your smartwatch isn’t just a timepiece—it’s an extension of your style. Thanks to innovative third-party developers, customizing your Apple Watch has reached new heights with stunning designs...

LayBy Shopping