Simplifying the production of lithium-ion batteries MIT News | Massachusetts Institute of Technology

By On Oct 26, 2022

When it comes to battery innovations, a lot of attention is paid to potential new chemicals and materials. The importance of production processes to reduce costs is often overlooked.

Now, MIT-derived 24M Technologies has simplified the production of lithium-ion batteries with a new design that requires fewer materials and fewer steps to manufacture each cell. The company says the design, which it calls “SemiSolid” for its use of sticky electrodes, cuts production costs by up to 40%. The approach also improves the energy density, safety and recyclability of batteries.

Judging by industry interest, 24M is on the right track. Since coming out of stealth mode in 2015, 24M has licensed its technology to multinational companies such as Volkswagen, Fujifilm, Lucas TVS, Axxiva and Freyr. These last three companies plan to build gigafactories (factories with annual production capacity on a gigawatt scale) based on 24M’s technology in India, China, Norway and the United States.

“The SemiSolid platform has been proven at the scale of hundreds of megawatts being produced for residential energy storage systems. Now we want to prove it on the gigawatt scale,” says 24M CEO Naoki Ota, whose team includes 24M co-founder, chief scientist, and MIT professor Yet-Ming Chiang.

Establishing large-scale production lines is just the first phase of 24M’s plan. Another key appeal of its battery design is that it can work with different combinations of lithium-ion chemicals. This means that 24M partners can incorporate better performing materials along the line without substantially changing manufacturing processes.

The kind of rapid, large-scale production of next-generation batteries that 24M hopes to make possible could have a dramatic impact on battery adoption across society – from the cost and performance of electric cars to the ability of renewable energy to replace batteries. fossil fuels.

“This is a platform technology,” says Ota. “We are not just a low-cost, high-reliability operator. That’s what we are today, but we can also be competitive with the chemistry of the next generation. We can use any chemistry on the market without customers changing their supply chains. Other startups are trying to solve this problem tomorrow, not today. Our technology can solve the problem today and tomorrow.”

Chiang, who is MIT’s Kyocera Professor of Materials Science and Engineering, got his first glimpse of large-scale battery production after co-founding another battery company, A123 Systems, in 2001. As that company prepared to open capital in the late 2000s, Chiang began to wonder if he could design a battery that was easier to manufacture.

“I got this window into what battery manufacturing was like, and what struck me was that while we did, it was an incredibly complicated manufacturing process,” says Chiang. “It derived from the manufacture of magnetic tape that was adapted to batteries in the late 1980s.”

In his lab at MIT, where he has been a professor since 1985, Chiang started from scratch with a new type of device he called a “semi-solid flow battery” that pumps liquids carrying particle-based electrodes to and from tanks to store a charge. .

In 2010, Chiang partnered with W. Craig Carter, who is a POSCO professor of Materials Science and Engineering at MIT, and the two professors supervised a student, Mihai Duduta ’11, who explored flow batteries for his undergraduate thesis. Within a month, Duduta developed a prototype in Chiang’s laboratory and 24M was born. (Duduta was the company’s first hire.)

But even as 24M worked with MIT’s Technology Licensing Office (TLO) to commercialize research done in Chiang’s lab, people at the company, including Duduta, began to rethink the flow battery concept. An internal cost analysis by Carter, who was a consultant to 24M for several years, eventually led the researchers to change direction.

That left the company with loads of the sticky paste that made up the electrodes in its flow batteries. A few weeks after Carter’s cost analysis, Duduta, then a senior researcher at 24M, decided to start using the paste to assemble batteries manually, mixing the sticky electrodes directly into the electrolyte. The idea caught on.

The main components of batteries are the positively and negatively charged electrodes and the electrolytic material that allows ions to flow between them. Traditional lithium-ion batteries use solid electrodes separated from the electrolyte by layers of inert plastics and metals, which hold the electrodes in place.

Removing the inert materials of traditional batteries and adopting the sticky electrode mixture gives the 24M’s design a number of advantages.

On the one hand, it eliminates the energy-intensive process of drying and solidifying the electrodes in traditional lithium-ion production. The company says it also reduces the need for more than 80% of the inactive materials in traditional batteries, including expensive ones like copper and aluminum. The design also requires no binder and has extra thick electrodes, improving the batteries’ energy density.

“When you start a company, the smartest thing to do is revisit all of your assumptions and ask what is the best way to achieve your goals, which in our case were low-cost, simple-to-make batteries,” says Chiang. “We decided that our real value was to make a lithium-ion suspension that is electrochemically active from the start, with electrolyte, and you just use the electrolyte as a processing solvent.”

In 2017, 24M participated in the MIT Industrial Liaison Program’s STEX25 Startup Accelerator, in which Chiang and collaborators made critical industry connections that would help secure early partnerships. 24M has also collaborated with MIT researchers on projects funded by the Department of Energy.

Most 24M partners have their eyes on the fast-growing electric vehicle (EV) market for their batteries, and the founders believe their technology will accelerate the adoption of electric vehicles. (Battery costs account for 30 to 40 percent of the price of EVs, according to the Institute for Energy Research.)

“Li-ion batteries have made huge improvements over the years, but even Elon Musk says we need some innovative technology,” says Ota, referring to the CEO of electric vehicle company Tesla. “To make EVs more common, we need a step up in production cost; we can’t just rely on cost savings through scaling because we already make a lot of batteries today.”

24M is also working to prove new battery chemistries that its partners can quickly incorporate into its gigafactories. In January of this year, 24M received a grant from the Department of Energy’s ARPA-E program to develop and size a high energy density battery that uses a lithium metal anode and semi-solid cathode for use in electric aviation.

This project is one of many around the world designed to validate new lithium-ion battery chemistries that could enable a long-sought battery revolution. As 24M continues to drive the creation of large-scale global production lines, the team believes it is well positioned to transform laboratory innovations into ubiquitous, world-changing products.

“This technology is a platform, and our vision is to be like Google’s Android [operating system], where other people can build things on our platform,” says Ota. “We want to do this, but with hardware. That’s why we’re licensing the technology. Our partners can use the same production lines to benefit from new chemistries and approaches. This platform gives everyone more options.”

1. CATL. Contemporary Amperex Technology Co. Limited, also known simply as CATL, is a Chinese battery company that manufactures lithium-ion batteries for electric vehicles.

Contents

Which lithium battery is safest?

The materials used in lithium iron phosphate batteries offer low resistance, making them inherently safe and highly stable. The thermal runaway limit is around 518 degrees Fahrenheit, making LFP batteries one of the safest lithium battery options, even when fully charged.

Are there safe lithium-ion batteries? Lithium batteries are generally safe and unlikely to fail, but only as long as there are no defects and the batteries are undamaged. When lithium batteries do not work safely or are damaged, they can present a risk of fire and/or explosion.

Which type of lithium ion battery is best?

Lithium Nickel Manganese Cobalt Oxide (LiNiMnCoO2) – NMC One of the most successful Li-ion systems is a nickel-manganese-cobalt cathodic combination (NMC). Similar to Li-Manganese, these systems can be adapted to serve as Energy Cells or Power Cells.

What is the strongest lithium battery?

Nothing lasts longer than Energizer® Ultimate Lithiumâ¢ AA batteries. Energizer® Ultimate Lithium™ batteries aren’t just the longest-lasting #1 AA batteries…they’re complete with leak resistance and extreme temperature performance (-40ºF to 140ºF or -40ºC to 60ºC).

Which lithium battery type is best?

One of the most important advantages that LiFePO4 has over other battery types is safety. LiFePO4 is the safest type of lithium battery. It’s the safest of any kind, in fact. Overall, LifePO4 batteries have the safest lithium chemistry.

How do I choose a lithium-ion battery?

The key features of lithium-ion batteries that set them apart from others are:

High energy-to-weight ratios,
open circuit high voltage,
low self-discharge rate,
Light weight.
Longer life cycle.
High operating temperature.
Store high capacity energy.

Which is better lithium-ion or lithium phosphate battery?

Most lithium-ion batteries have a cycle life of between 500 and 1,000, which is in stark contrast to the 1,000-10,000 cycle life of lithium iron phosphate. This makes lithium iron phosphate batteries much better for applications that need to run for long periods of time without being changed.

What lithium battery is the best?

The Best AA Batteries You Can Buy in 2022

Energizer Ultimate Lithium: The longest lasting AA battery. …
Amazon Basics Performance Alkaline: The best budget battery. …
Energizer Alkaline Power: The best everyday battery. …
Duracell Optimum: The best alkalines for high consumption devices. …
Duracell Plus: A great all-rounder.

How long will a lithium iron phosphate battery last?

Lithium Iron Phosphate Battery Life Lithium iron phosphate batteries are generally rated for approximately 4,500 to 5,000 charge cycles with an impressive charging depth of 80%. If you plan on spending one charge cycle a day, the battery should last more than 12 years.

What is the downside of LFP battery?

Cold weather charging for LFP batteries However, there are some drawbacks to consider, notably cold weather charging and loss of range.

Which battery chemistry is safest?

Lithium Iron Phosphate (LFP): Safer Chemistry uses chemically stable LFP that does not exhibit the thermal energy runaway that metal oxide lithium ion cells experience.

Which is safer lithium-ion or lead acid battery?

In most cases, lithium-ion battery technology is superior to lead-acid battery technology because of its reliability and efficiency, among other attributes. However, in cases of small off-grid storage systems that are not used regularly, cheaper lead-acid battery options may be preferable.

Which battery chemistry is best?

Today, Liaion is the fastest growing and most promising battery chemistry. Lithium-ion energy density is typically twice that of standard NiCd.

Is LFP safer than NMC?

G/LFP batteries have moderate to long life but a lower energy density than NMC batteries, but offer a small safety advantage for G/NMC chemistry. This is due to the chemical structure of LFP which prevents the release of oxygen. LFP has a higher self-discharge rate compared to other lithium-ion chemistries.

Is lithium toxic to the environment?

Lithium batteries are generally not considered an environmental hazard, except when they contain toxic (heavy) metals and are discarded in large quantities. The literature survey indicated that lithium is not expected to bioaccumulate and that its human and environmental toxicity is low.

Is lithium harmful to the environment? Lithium can be described as the non-renewable mineral that makes renewable energy possible – often touted as the next oil. Lithium extraction inevitably damages the soil and causes air contamination.

Is lithium toxic or hazardous?

º Lithium exposure can cause loss of appetite, nausea, vomiting, diarrhea and abdominal pain. º Lithium can cause headache, muscle weakness, spasms, blurred vision, loss of coordination, tremors, confusion, seizures and coma.

Why is lithium hazardous?

Lithium batteries contain potentially toxic materials, including metals such as copper, nickel and lead, and organic chemicals such as toxic and flammable electrolytes containing LiClO4, LiBF4 and LiPF6.

How toxic is lithium ion?

The gases are potentially fatal, can cause severe irritation to the skin, eyes and nasal passages and harm the environment. These toxic gases can be emitted when a lithium-ion battery is overheated while charging.

Is lithium a toxic heavy metal?

Lithium salts are not considered very toxic, except for their hydrides, Li tetrahydroaluminate and Li tetrahydroborate.

Is lithium environmentally friendly?

Lithium-ion batteries contain metals such as cobalt, nickel and manganese, which are toxic and can contaminate water supplies and ecosystems if leached from landfills. In addition, fires in landfills or battery recycling facilities have been attributed to improper disposal of lithium-ion batteries.

Is lithium mining worse than fossil fuels?

“It’s not like the CO2 comes out of lithium, but it takes energy to mine things – today a lot of these systems involve the emission of CO2.” to the climate than producing fossil fuel vehicle batteries in an article in The Wall Street Journal…

Is lithium a sustainable resource?

Lithium is a resource that can be recycled repeatedly, thus reducing future needs for new sources of lithium.

Is lithium toxic to dispose?

According to the US government, lithium-ion batteries are not an environmental hazard. “Li-ion batteries are classified by the federal government as non-hazardous waste and are safe to dispose of in the normal municipal waste stream,” says Kate Krebs of the National Recycling Coalition.

How do you dispose of lithium metal?

Waste containing metallic lithium should only be disposed of by a licensed hazardous waste disposal facility experienced in handling reactive chemicals. Strict packaging guidelines exist for transporting lithium metal as hazardous waste and are available from disposal companies.

Is lithium hard to dispose?

Lithium can be flammable, making it a hazardous material to recycle, and because of that, you can’t just add lithium-ion batteries to your regular trash can. In addition, EV batteries and storage batteries are very heavy, making transporting them to a recycling center an arduous process.

Is lithium a toxic waste?

Lithium batteries are hazardous materials and are subject to the DOT Hazardous Materials Regulations (HMR; 49 CFR Parts 171–180).

What is a major problem with lithium batteries?

What are the challenges of lithium-ion batteries? A lithium-ion battery contains two electrodes – the cathode and the anode…. What makes lithium-ion batteries unsafe?

overvoltage.
overload.
over current.
external short circuit.
charging outside the accepted.
temperature range.
over-discharge and fast charging of over-discharged cells.
deep discharge.

Is there a problem with lithium batteries?

In addition to recycling, the production of lithium batteries is also dangerous. Mining the various metals needed to make a lithium battery is resource intensive – it takes 500,000 gallons of water to mine a ton of lithium. Mining metals in lithium batteries is also known to be toxic to human health.

What is the largest problem with lithium-ion batteries?

However, lithium-ion batteries are extremely sensitive to high temperatures and inherently flammable. These batteries tend to degrade much faster than they normally would due to the heat. If a lithium-ion battery fails, it will burst into flames and could cause widespread damage.

Why lithium batteries are not the future?

Li-ion batteries require large amounts of cobalt. Mining this rare metal is not environmentally or socially responsible, so the use of lithium-ion batteries cannot be considered a green alternative to fossil fuels.

Will lithium batteries be obsolete?

Li-ion batteries could be obsolete in a few years as alternatives like lithium-sulfur, lithium-air, and lithium-metal come into production. Meanwhile, quantum battery charging promises to reduce charging times from hours to seconds.

What is a disadvantage of lithium batteries?

Despite its general advantages, lithium-ion has its disadvantages. It is fragile and requires a protection circuit to maintain safe operation. Built into each package, the protection circuit limits the peak voltage of each cell during charging and prevents the cell voltage from dropping too low on discharge.

What are the advantages and disadvantages of lithium-ion batteries?

Because of their attributes, lithium-ion batteries and cells are better suited for some applications than others. They provide higher levels of charge than other battery technologies and have a higher voltage and can often cost more than some other types.

What are 3 negative features of lithium-ion batteries?

Disadvantages or Disadvantages of Li-Ion Battery – It only lasts two to three years after the manufacturer. • It is sensitive to high temperatures. • If the battery is completely discharged, it can no longer be recharged. ¨It is relatively expensive.

What is the largest problem with lithium-ion batteries?

What is going to replace lithium batteries?

Magnesium. Magnesium can theoretically carry a significant charge of 2, more than lithium or sodium. Because of this, batteries made from the material would have a higher energy density, more stability and lower cost than the lithium-ion batteries used today, according to the researchers.

Is there a better battery than lithium ion?

Fluorine batteries have the potential to last eight times longer than lithium batteries, but that’s easier said than done. That’s because fluorine is an anion, or a negatively charged ion, which is the magic behind its high energy density, but it’s also the reason it’s reactive and difficult to stabilize.

What are the advantages and disadvantages of Li-ion batteries?

Lithium-Ion Batteries (LIBs) Advantage -Lightweight (provides the same or more power at less than half the weight and size)[11] -Higher voltage than other rechargeable batteries[11] -Higher number of charge cycles loading and unloading [11] -99% Coulomb efficiency [12] Disadvantage -Risk of fire [11] -Limited capacity …

What is the downside of lithium batteries? Despite its general advantages, lithium-ion has its disadvantages. It is fragile and requires a protection circuit to maintain safe operation. Built into each package, the protection circuit limits the peak voltage of each cell during charging and prevents the cell voltage from dropping too low on discharge.

What are the advantages of a lithium-ion battery?

Li-ion batteries offer the highest energy density on the market of rechargeable batteries (100-265 Wh/kg). This makes charging a lithium-ion battery easier, faster, and longer-lasting. This makes for a more powerful battery overall – even when compared to lithium iron phosphate.

What is the advantages of lithium-ion batteries over lead acid?

Lithium-ion chemistries can accept a faster current rate, charging faster than batteries made with lead-acid. This is critical for time-sensitive applications where vehicles have high utilization and fewer break times.

What are the advantages of lithium battery?

Lithium Is Long Lasting RELiON lithium batteries provide up to 10 times longer life than lead-acid batteries and still deliver 80% of rated capacity after 2,000 cycles. Most lithium-ion batteries last five years or more. The lead-acid battery only lasts for two years.

What is the advantage and disadvantage of lithium ion battery?

What are the advantages and disadvantages of lithium?

They provide higher levels of charge than other battery technologies and have a higher voltage and can often cost more than some other types. This makes them more applicable to some electronic circuit designs than to other types of battery technology, or in other cases can make them less suitable.

What are the advantages and disadvantages of lithium-ion batteries?

What are the advantages of lithium cell?

Lithium-ion batteries can be recharged hundreds of times and are more stable. They tend to have a higher energy density, voltage capability, and lower self-discharge rate than other rechargeable batteries. This contributes to better energy efficiency as a single cell has a longer charge retention than other battery types.