Scientists have found major storage capacity in water-based batteries
Texas A&M University scientists have been working with metal-free, water-based battery electrodes, and they’re finding that the difference in energy storage capacity is as much as 1,000%.
How the water-based batteries work
In the scientists’ paper, published in Nature Materials this week, the water-based, or aqueous, batteries consist of a cathode – the negatively charged electrode; an anode – the positively charged electrode; and an electrolyte, like traditional batteries. But in this water-based battery, the cathodes and anodes are polymers that can store energy, and the electrolyte is water mixed with organic salts.
The electrolyte transfers the ions – the charge-carrying particles – back and forth between the cathode and the anode, and the electrolyte is also key to energy storage through its interactions with the electrode.
Chemical engineering professor and co-author Dr. Jodie Lutkenhaus asserts:
If an electrode swells too much during cycling, then it can’t conduct electrons very well, and you lose all the performance.
I believe there is a 1,000% difference in energy storage capacity, depending on the electrolyte choice because of swelling effects.
According to their paper, the electrodes – the “redox-active non-conjugated radical polymers” – are promising candidates for water-based batteries because of the polymers’ high discharge voltage and fast redox kinetics.
However, the researchers note in their paper’s abstract:
[L]ittle is known regarding the energy storage mechanism of these polymers in an aqueous environment. The reaction itself is complex and difficult to resolve because of the simultaneous transfer of electrons, ions, and water molecules.
The future of aqueous batteries
The researchers suggest that water-based batteries might be able to mitigate potential shortages of metals such as cobalt and lithium, as well as eliminate the potential for battery fires.
Lutkenhaus continued:
There would be no battery fires anymore because it’s water-based.
In the future, if materials shortages are projected, the price of lithium-ion batteries will go way up. If we have this alternative battery, we can turn to this chemistry, where the supply is much more stable because we can manufacture them here in the United States and materials to make them are here.
The researchers also conducted computational simulation and analysis, and they’ll carry out further simulations to better understand the theory.
Chemistry assistant professor and co-author Dr. Daniel Tabor said:
With this new energy storage technology, this is a push forward to lithium-free batteries. We have a better molecular level picture of what makes some battery electrodes work better than others, and this gives us strong evidence of where to go forward in materials design.
Read more: A Mars rover scientist is about to scale carbon-oxygen batteries
Photo: Texas A&M Engineering
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Over the weekend, Tesla began offering many Cybertruck trade-in estimated values above the original purchase price, apparently due to a glitch in its system.
Tesla offers online trade-in estimates for individuals considering purchasing a vehicle from them.
Over the last few days, Cybertruck owners who submitted their vehicles through the system were surprised to see Tesla offering extremely high valuations on the vehicle, often above what they originally paid for the electric truck.
Here are a few examples:
- $79,200 for a 2025 Cybertruck AWD with 18,000 miles. Since this is a 2025 model year, it was eligible for the tax credit and Tesla is offering the same price as new without incentive.
- Here Tesla offered $118,800 for a 2024 Cybertruck ‘Cyberbeast’ tri-motor with 21,000 miles.
- In this example, Tesla offers $11,000 more than the owner originally paid for a 2024 Cybertruck.
The trade-in estimates made no sense. Tesla has been known to offer more attractive estimates online and then come lower with the official final offer, but this is on a whole different level.
Some speculated that Tesla’s trade-in estimate system was malfunctioning, while others thought Tesla was indirectly recalling early Cybertrucks.
It appears to be the former.
Some Tesla Cybertruck owners who tried to go through a new order with their Cybertruck as a trade-in were told by Tesla advisors that the system was “glitching” and they would not be honoring those prices.
Tesla told buyers that it would be refunding its usually “non-refundable” order fee.
Electrek’s Take
That’s a weird glitch. I assume that it was trying to change how the trade-in value would be estimated and the new math didn’t work for the Cybertruck for whatever reason.
It’s the only thing that makes sense to me.
The Cybertruck’s value is already quite weird due to the fact that Tesla still has new vehicles made in 2024, which are not eligible for the tax credit incentive, while the new ones made in 2025 are eligible.
There’s also the Foundation Series, which bundles many features for a $20,000 higher price.
All these things affect the value and can make it hard to compare with new Cybertrucks offered with 0% interest.
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![At $28,000 off, is the Jeep Wagoneer S the best EV deal going? [update]](https://i0.wp.com/electrek.co/wp-content/uploads/sites/3/2025/06/jeep_wagoneer_deals.jpg?resize=1200,628&quality=82&strip=all&ssl=1)
Like a 90s “gifted” kid that was supposed to be a lot of things, the electric Jeep Wagoneer S never really found its place — but when dealers started discounting the Jeep brands forward-looking flagship by nearly $25,000 back in June, I wrote that it might be time to give the go-fast Wagoneer S a second look.
This month, the discounts are even better.
UPDATE 23AUG25: I found you some even better EV deals!
Whether we’re talking about Mercedes-Benz, Cerberus, Fiat, or even Enzo Ferrari, outsiders have labeled Jeep as a potentially premium brand that could, “if managed properly,” command luxury-level prices all over the globe. That hasn’t happened, and Stellantis is just the latest in a long line of companies to sink massive capital into the brand only to realize that people will not, in fact, spend Mercedes money on a Jeep.
That said, the Jeep Wagoneer S is not a bad car (and neither is its totally different, hideously massive, ICE-powered Wagoneer sibling, frankly). Built on the same Stellantis STLA Large vehicle platform that underpins the sporty Charger Daytona EVs, the confusingly-named Wagoneer S packs dual electric motors putting out almost 600 hp. That’s good enough to scoot the ‘ute 0 to 60 mph in a stomach-turning 3.5 seconds and enough, on paper, to convince Stellantis executives that they had developed a real, market-ready alternative to the Tesla Model Y.
With the wrong name and a sky-high starting price of $66,995 (not including the $1,795 destination fee), however, that demand didn’t materialize, leaving the Wagoneer S languishing on dealer lots across the country.
That could be about to change, however, thanks to big discounts on Wagoneer S being reported at CDJR dealers in several states:
- Jeff Belzer’s in Minnesota has a 2025 Wagoneer S Limited with a $67,790 MSRP for $39,758 ($28,032 off)
- Troncalli CDJR in Georgia has a 2025 Wagoneer S Limited with a $67,590 MSRP for $42,697 ($24,893 off)
- Whitewater CDJR in Minnesota has a 2025 Wagoneer S Limited with a $67,790 MSRP for $43,846 ($23,944 off)
- Antioch CDJR in Illinois has a 2025 Wagoneer S Limited with a $67,790 MSRP for $44,540 ($23,250 off)
“Stellantis bet big on electric versions of iconic American brands like Jeep and Dodge, but consumers aren’t buying the premise,” writes CDG’s Marcus Amick. “(Stellantis’ dealer body) is now stuck with expensive EVs that need huge discounts to move, eating into already thin margins while competitors focus on [more] profitable gas-powered vehicles.”
All of which is to say: if you’ve found yourself drawn to the Jeep Wagoneer S, but couldn’t quite stomach the $70,000+ window stickers, you might want to check in with your local Jeep dealer and see how you feel about it at a JCPenneys-like 30% off!
Jeep Wagoneer S gallery
Original content from Electrek; images via Stellantis.
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Multinational equipment brand SANY just launched a clever new 50-ton reach stacker that pairs gravity and an F1-style KERS system to generate electricity, improve operating efficiency, and reduce costs. The best part: they’re putting that smart tech to work by helping clean up (and shore up) the grid.
Short for Kinetic Energy Recovery System, KERS was a staple of Formula 1 in the late aught and 2010s. Essentially an advanced form of regenerative braking, KERS captured the kinetic energy of a car at speed that would normally be lost as heat when the brake pads pressed against the brake discs. Instead of heat, KERS converted that energy into electricity (storing it in a battery or flywheel), to be deployed later.
Sebastian Vettel explains KERS
In practice, KERS gave drivers an extra boost of horsepower at the push of a button, enabling them to attack or defend their position on track and adding a fresh strategic element to the sport. In SANY’s case, that stored power is fed back into the reach stacker’s electric hydraulic system, reducing pressure loss across the high-pressure setup by 50%, and lowering the machine’s overall energy consumption by more than 60%.
Energy recovery is a key feature. The potential energy of the boom, lifting gear and energy storage cabinets during the boom’s descent can be recovered efficiently with an overall recovery efficiency of over 65%. That means every 1 kWh of consumption in lifting can be recovered by 0.4 kWh during descent.
The 50t reach stacker is available with a 512 kWh swappable battery pack that’s compatible with other SANY heavy equipment assets, and supports both DC fast charging when swapping isn’t practical or (for whatever reason) desirable.
On a single charge and backed by the onboard KERS, that’s good enough for the machine can lift and move containers for more than 7 continuous hours, which SANY claims significantly reducing downtime for charging compared to other, similar equipment assets.
The new SANY reach stacker can stack six 50-ton containers, greatly enhancing a site’s container and battery storage density within a limited space. The first units will reach unnamed customers building out a utility-scale energy storage project by the end of this month.
Electrek’s Take
All the great stuff I was saying about the new 65-tonne XCMG still holds true for the SANY (especially when they take the wraps off their own 65t BESS-specific unit later this year), but the SANY adds smart battery swap tech and what seems to be more efficient operations, too.
Regardless of which one you choose, it seems like the available options for reach stacker operators are just getting better and better!
SOURCE | IMAGES: SANY.
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