Harvard develops a solid state battery that charges in minutes
Researchers at Harvard University have developed a new solid state battery that can be recharged in 10 minutes.
Harvard’s latest solid-state battery breakthrough
The lithium metal battery researchers developed at the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) can also be charged and discharged at least 6,000 times — more than any other pouch battery cell.
The research published in Nature Materials describes a new way to make solid-state batteries with a lithium metal anode. Xin Li, Associate Professor of Materials Science at SEAS and senior author of the paper, said:
Lithium metal anode batteries are considered the holy grail of batteries because they have ten times the capacity of commercial graphite anodes and could drastically increase the driving distance of electric vehicles.
Our research is an important step toward more practical solid-state batteries for industrial and commercial applications.
One of the biggest challenges in designing solid-state batteries is the formation of dendrites on the surface of the anode. Dendrites are projections of metal that can build up on the lithium surface and grow like roots into the electrolyte. They pierce the barrier that separates the anode and cathode, causing the battery to short or even catch fire.
The dendrites form when lithium ions move from the cathode to the anode during charging, attaching to the surface of the anode in a process called plating. That creates an uneven, non-homogeneous surface on the anode, and allows dendrites to take root.
When discharged, that plaque-like coating needs to be stripped from the anode, and when plating is uneven, the stripping process can be slow and result in potholes that induce even more uneven plating in the next charge.
In 2021, the team designed a multilayer battery that sandwiched different materials of varying stabilities between the anode and cathode. This design prevented the penetration of lithium dendrites by controlling and containing them – but it didn’t stop them altogether.
But in this latest research, the researchers stop dendrites from forming by using micron-sized silicon particles in the anode to constrict the lithiation reaction and facilitate homogeneous plating of a thick layer of lithium metal.
In the Harvard researchers’ design, when lithium ions move from the cathode to the anode during charging, the lithiation reaction is constricted at the shallow surface and the ions attach to the surface of the silicon particle, but don’t penetrate further.
“In our design, lithium metal gets wrapped around the silicon particle, like a hard chocolate shell around a hazelnut core in a chocolate truffle,” said Li.
And, because plating and stripping can happen quickly on an even surface, the battery can recharge in about 10 minutes.
The researchers built a postage stamp-sized pouch cell version of the battery, which is 10 to 20 times larger than the coin cell made in most university labs. The solid-state battery retained 80% of its capacity after 6,000 cycles, outperforming other pouch cell batteries on the market today.
Harvard Office of Technology Development licensed the technology to Adden Energy, a Harvard spinoff company cofounded by Li and three Harvard alumni. Adden Energy has scaled up the technology to build a smart phone-sized pouch cell battery.
Electrek’s Take
This is yet another milestone achieved in the solid-state battery saga. The ultimate challenge is still the ability to mass-produce these batteries at a lower price than lithium-ion batteries. That will be the real game-changer for EVs.
Photo: BMW
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The first electric Range Rover is expected to hit showrooms in the next few months. With its official debut just around the corner, Range Rover’s first EV was spotted testing in Sweden. Here’s a sneak peek of the luxury electric SUV.
Range Rover’s first EV put through the paces in Sweden
Range Rover is finally gearing up to introduce its first EV later this year. Earlier this year, JLR confirmed that the Range Rover Electric already has 57,000 buyers on the waiting list.
The company claims the new model “redefines” the electric luxury SUV with an “unrivalled driving experience.” To prove it, Range Rover is putting its first EV through the paces in sub-zero conditions in Sweden.
Range Rover’s electric SUV has been through 45,000 miles of testing across frozen lakes and land tracks. The latest round allowed engineers to test their new thermal management system.
The company’s new ThermAssist thermal management system reduces heat energy consumption by up to 40% and is designed to warm the propulsion system or cabin in temperatures as low as ‑10°C (14°F).
Range Rover said it also helps optimize driving range while minimizing the impact of extreme temperatures on charging performance.
Combined with an 800V battery, the first one built in-house by JLR, the company promises the best possible performance, with optimized energy density, range, and charging times. The Range Rover’s first EV will be powered by a 117 kWh battery, consisting of 344 prismatic cells.
Built for both on- and off-road performance, the electric SUV features new additions like single-pedal driving and a switchable twin-chamber air suspension system.
Range Rover tested the single-pedal capabilities on both 28-degree and 17-degree split-mu inclines at its Arctic test facility.
Matt Becker, Vehicle Engineering Director at JLR, explained that the electric SUV maintains the brand’s signature driving experience “by marrying all the essential Range Rover elements with new and advanced technologies.”
Following its second season in Sweden, Range Rover will continue testing prototypes ahead of the official launch later this year.
After its first EV, Range Rover is already preparing another smaller electric SUV, which is expected to be the Sport model. In 2026, the company is expected to release a mid-sized electric SUV, likely the Velar.
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Volvo is launching a nearly $2 billion (SEK 18 billion) restructuring plan to drive growth and mitigate the impact of Trump’s tariffs. With the new EX30 and ES90 EVs rolling out, Volvo is taking drastic action to drive growth.
Volvo launches restructuring plan due to Trump’s tariffs
After its operating income fell by nearly 60% to SEK 1.9 billion in the first quarter, Volvo launched a cost and cash action plan.
The restructuring is worth SEK 18 billion, with most of it being realized in 2026. Volvo’s new strategy includes SEK 3 billion in variable cost actions and SEK 5 billion in indirect spend efficiencies. The additional SEK 10 billion will be added in cash actions to reduce working capital and capital expenditures this year and in 2026.
Volvo Cars CEO Håkan Samuelsson said, “The automotive industry is in the middle of a very difficult period with challenges not seen before.”
With “turbulence in the market,” Samuelsson added that the company needs to “further improve our cash flow generation and lower our costs.”
To do so, Volvo is focusing on three areas: profitability, electrification, and regionalisation. Volvo is already leading the premium segment, with electrified vehicles accounting for 43% of sales in Q1. However, with new EVs launching, Volvo said more will need to be done to overcome the impact of Trump’s tariffs.
Volvo created a new region called Americas, which includes the US, Canada, and Latin America, to streamline its global operations.
In the US, the company is looking to sharpen its product line-up and plans to boost production at its Charleston, South Carolina, plant.
Earlier this month, Volvo started production of the EX30 at its Ghent plant, which will help it ramp up deliveries in the second half of 2025.
Since it will be imported into the US, Volvo is bracing to take a hit from tariffs. Even the EX90, which is made in Charleston, is heavily impacted, as most components still come from Europe.
Volvo also revealed the new ES90 last month, its new electric sedan and second EV built on the Volvo Cars Superset Tech Stack. It’s Volvo’s sixth fully electric vehicle following the EX90, EM90, EX40, EX40, and EX30.
In China, Volvo plans to adapt to the changing market with its first extended-range PHEV model, which will launch later this year.
Volvo said it remains “firm on becoming a fully electric car company.” Despite a weaker overall market, almost a fifth of the vehicles it sold in the first quarter were electric.
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In a warming world with increasingly extreme weather events, homeowners are turning to backup batteries for relief and peace of mind. But the backup only lasts only so long, and there’s a bigger problem at play: aging power grids.
Enter the virtual power plant, managed through a cloud-based system. It’s a fertile market for a number of companies as consumers look for more reliability, especially in areas prone to extreme temperatures and storms.
Base Power, headquartered in Austin, Texas, is a virtual power plant and hardware company that provides battery backup to homeowners. The startup manages the batteries, and virtually controls the power that’s going in and out.
“We install our batteries on our customers’ homes. When the grid is up and running, we use those batteries to support the power grid,” said Base CEO Zach Dell. “When the grid goes out, our customers get those batteries to back up their home. We’re also able to save our customers on the order of 10 to 20% a month on their electricity bills.”
Unlike Tesla and Enphase, Base doesn’t sell home backup batteries. Rather, it rents the batteries to homeowners, providing the hardware, software, installation, operations and electricity. Essentially, it’s a battery-based energy company.
“We own and operate it,” Dell said. “We handle all the maintenance. We take care of the system like it’s ours.”
That control allows Base to manipulate how the battery is used, specifically accessing cheaper power and passing that savings on to the consumer. Base charges the battery from the grid when demand is low, typically during overnight hours. When demand is at its peak — summer evenings and winter mornings — Base sells power, discharging the battery to support the grid.
For an upfront fee of $595 and then about $19 a month, homeowners get access to reliable power, provided by Base. That power is generated by several sources, including wind, solar, natural gas and coal. About half of Base’s customers have solar, according to the company, which lowers their costs even more and allows them to sell that power back to Base.
A company spokesperson said Base compensates customers for the power they sell back, calculated as the real-time wholesale energy price plus an additional 3 cents per kilowatt hour. Buyback rates may vary depending on market conditions and other factors.
Base is now serving one of the nation’s largest homebuilders, Lennar, which is also an investor. Base installs batteries during the construction process in roughly 20 Lennar outage-prone communities in Texas.
Stuart Miller, Chairman and co-CEO of Lennar, said it’s not just about making money.
“It’s, are we going to be able to improve the overall stature of the home building business, as it seeks to address the markets that are stressed and having problems?” he said. “Utilities and electricity is a part of that.”
Base has raised a total of $268 million from investors including Lennar, Thrive Capital, Valor Equity Partners, Lightspeed Venture Partners and Andreesen Horowitz.
Base recently announced its first utility partnership near San Antonio. Dell said the company hopes to soon expand outside of Texas. However, the batteries are made in China, and Dell said he expects to see an impact from tariffs.
— CNBC producer Lisa Rizzolo contributed to this piece.
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