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Harvard develops a solid state battery that charges in minutes [update]
Researchers at Harvard University have developed a solid state battery that can be recharged in 10 minutes, and now it’s got Series A funding to scale production.
October 23 update: Adden Energy has raised $15 million in a Series A round led by At One Ventures with participation from Primavera Capital Group, Rhapsody Venture Partners, and MassVentures to scale production and bring solid state battery technology to car manufacturers.
The company will use the funding to construct a roll-to-roll pilot line production facility at its headquarters in Waltham, Massachusetts.
Adden Energy has already demonstrated technology that can deliver its battery in EV-compatible, commercially compatible pouch cell form-factors; this Series A-funded production line will enable it to scale the size of the batteries 100x.
Laurie Menoud, partner at At One Ventures and board member at Adden Energy, said, “Our investment in this technology is a signal of how important we know this to be, and it’s also our confidence level in Adden Energy’s ability to win market share through competitive unit economics. With the added energy density of lithium metal anodes, the cost per kilowatt hour is going to drop by 30%, and that is going to be a significant driver of adoption.”
Adden Energy says its next-generation batteries are on track to reach the goal of EV parity with internal combustion engines by 2028.
Harvard’s latest solid-state battery breakthrough
January 15, 2024: 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 bringing them to mass-production at a lower price than lithium-ion batteries. That will be the real game-changer for EVs.
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If you haven’t noticed, Genesis is quickly making a name for itself in the US. The luxury automaker now has 60 sales outlets as it expands into new US states. With new EVs launching, Genesis is eyeing a bigger share of the US luxury market.
Hyundai Motor Group’s Genesis brand is quietly emerging as a powerhouse in the US luxury market. Genesis marked its entry into the luxury segment in 2008 as a Hyundai-branded model.
In 2015, Hyundai announced Genesis would become an independent luxury brand. Since launching its first vehicle in the US, the luxury brand’s sales have surged from 7,000 in 2016 to over 69,000 last year. It even outsold Nissan’s Infiniti.
According to Genesis, this is just the start. The Korean luxury brand wants an even bigger slice of the market as it eyes rivals like Porsche.
A big reason behind the brand’s confidence is its new lineup of stylishly electric models. Genesis sells three EVs in the US: The GV60, Electrified G80, and Electrified GV70.
After introducing the Electrified GV70 just last year, the electric SUV is already Genesis’ top-selling EV in the US. According to Kelley Blue Book, Genesis sold 2,343 electric GV70 models in the US through September.
Genesis eyes a bigger share of the US luxury market
Altogether, the luxury brand’s EV sales reached over 4,600 through the first nine months of 2024, topping Porsche (4,291) and Volvo (3,644).
Genesis made a statement at the LA Auto Show, unveiling the updated 2026 Electrified GV70. The luxury electric SUV now includes more range and an NACS port so drivers can charge at Tesla Superchargers. It will go on sale in the first half of 2025.
Meanwhile, Genesis showcased its new GV60 Magma Concept at the event, its first dedicated high-performance EV. The brand sees its Magma performance brand rivaling that of Geman luxury brands like Mercedes AMG, BMW M, and Audi RS.
The Genesis GV60 Magma EV will launch next year, spearheading the brand’s “expansion into the realm of high-performance vehicles.”
Genesis enhanced the battery and motor while fine-tuning the chassis, thermodynamics, and profile for more power and efficiency.
It also features an aggressive new design, sitting much lower and wider than the current GV60 model. Genesis added a Magma-exclusive sound system to give it a sports car-like feel in the cockpit.
In April, we got our first look at the G80 EV Magma concept, which could be a potential challenger to Tesla’s Model S Plaid and the Porsche Taycan GT Turbo.
The luxury brand is expected to launch its flagship electric three-row SUV next year, the GV90. Genesis previewed the ultra-luxury EV in March after unveiling the Neolun concept.
Genesis now has 60 sales bases in the US, with new stores in Washington, Minnesota, New York, and Florida. It’s also building 30 in Canada as it expands its presence in the North American luxury market.
The luxury brand is opening a new dedicated design center in California. The “Genesis Design California” will open in the first half of 2025 as it builds out its US network.
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A rumor spreading like wildfire on social media claims BYD will be taking over NIO (NYSE: NIO) as the EV giant gobbles up market share in China. The rumor was posted by a suspected BYD employee, but NIO is denying the claim.
BYD acquiring NIO would be a massive move as China’s leading EV maker continues to dominate the market. But that’s not going to happen.
According to CnEVPost, NIO’s assistant vice president for branding and communications, Ma Lin, denied the rumors that BYD is taking over the company on Friday.
Ma posted a screenshot on social media asking BYD’s general manager of branding and PR, Li Yunfei if the person who posted the fake rumor was an employee.
Earlier today, the suspected employee claimed BYD and NIO were setting up a joint venture. In a Weibo post, the suspect said BYD would have majority control of the partnership with a 51% share while NIO would get the remaining 49% ownership.
Ma told Li that if it was, in fact, a BYD employee, he needed to issue an official clarification and apologize. If not, they can get the police involved together. Li also denied the rumors, saying the claim was seriously untrue.
NIO denies rumors that BYD is taking over the company
This is not the first time rumors surfaced that BYD will be taking over NIO, but because it is a suspected employee, the post has garnered more attention.
BYD is on a major hiring spree as it ramps up production to meet the higher demand. The EV giant now has over 900,000 employees, making it by far the largest A-share listed company in China.
After selling over 500,000 vehicles for the first time in a single month in October, BYD’s surge is heating up as the EV giant expands overseas for growth.
October was BYD’s fifth consecutive record sales month as it closes in on auto leaders like Ford in global deliveries.
NIO is also gaining momentum, with sales topping the 20,000 mark for the sixth straight month in October. With output of its new lower-priced Onvo L60 electric SUV ramping up, NIO expects to continue seeing higher demand.
Ma said on Friday that NIO’s “recent situation is quite good.” The company’s head of PR added, “Cash flow turned positive in the third quarter, gross profit improved in October, earning an extra RMB 100 million, and Onvo (deliveries) will exceed 10,000 in December.”
NIO is launching its third brand, Firefly, with deliveries kicking off in the first half of 2025. The company expects sales to double next year as it works to become profitable by 2026.
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Hyundai Motors is recalling 145,235 EVs and other “electrified” vehicles in the US, citing concerns about a loss of driving power, the National Highway Traffic Safety Administration (NHTSA) said on Friday.
The NHTSA announced this morning that the recall affects selected IONIQ 5 and IONIQ 6 EVs, as well as certain luxury Genesis models, including the GV60, GV70, and G80 electrified variants, from the 2022-2025 model years, Reuters reported.
It looks like the issue stems from “the integrated charging control units in these vehicles, which may become damaged and fail to charge the 12-volt battery. This malfunction could lead to a complete loss of drive power, posing safety risks for drivers,” the NHTSA stated.
If you’re an owner of one of these Hyundai models dating 2022-2025, stay tuned. Hyundai has not yet provided a timeline as to when affected vehicles will be repaired.
To make that happen, the company’s dealers will inspect and replace the charging unit and its fuse if necessary, NHTSA said. Free of charge, of course.
Importantly, no crashes, injuries, fatalities, or fires due to this issue have been reported in the US, Hyundai reported.
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