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 Materialsthis 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.
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Coca-Cola’s bottling partners in India are going electric, three wheels at a time. The company just announced a major expansion of its electric delivery fleet, adding thousands of electric three-wheeled vehicles (often called e-rickshaws or electric tuk-tuks) to its logistics operations across the country.
These compact electric vehicles are already a common sight on India’s roads, used for everything from passenger transport to last-mile cargo deliveries. Now Coca-Cola’s bottlers are ramping up their use of these efficient EVs as part of a broader sustainability and welfare initiative dubbed “Vividhta ka Uphaar,” which translates to “a gift of diversity.”
According to the company, the rollout is already underway, with more than 5,000 electric three-wheelers integrated into delivery routes in cities such as Ahmedabad, Bhubaneswar, Bhopal, and more. The vehicles not only reduce tailpipe emissions but also lower noise pollution and operating costs, making them a win for both the company and the communities they serve.
Coca-Cola joins a growing list of multinational corporations turning to electric tuk-tuks to clean up their delivery fleets in Asia. IKEA has deployed similar electric three-wheelers in India and other Southeast Asian countries as part of its push to achieve zero-emissions deliveries. Amazon and Flipkart have also experimented with three-wheeled EVs to reach urban customers on tight, traffic-clogged streets.
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While North America often focuses on four-wheeled electric trucks and vans for commercial use, much of the developing world relies on these nimble three-wheeled workhorses. Affordable, maneuverable, and easy to charge, electric rickshaws are a natural fit for dense cities with hot climates – especially where small businesses and large corporations alike need efficient last-mile solutions.
Electrek’s Take
These types of EVs can’t come soon enough. They use electric drivetrains that are closer in size to an electric bicycle than an electric delivery truck or van (usually 2-4kW motors and 3-5 kWh batteries), yet can carry loads closer in size to those same trucks and vans.
Sure, they can’t carry quite the same tonnage, but they’re often more appropriately sized for the kind of last-mile delivery that so many companies require.
I actually bought an electric tuk-tuk back in 2023 and found it to be the perfect ‘city truck’ for my lifestyle, where I live car-free in a city and my wife and I travel by e-bike and e-motorcycle. For the few times we need to actually haul stuff, an electric tuk-tuk or rickshaw gives truck-like capacity in a smaller and more efficient vehicle. What’s not to like?!
Move over, Bugatti! The new Chinese Yangwang U9 Xtreme electric hypercar just blasted its way to a staggering, 308.4 mph top speed on a German test track, seizing the “world’s fastest car” crown and busting the last traces of the myth that electric cars are slow.
“This record was only possible because the U9 Xtreme simply has incredible performance,” explains German GT racing driver Marc Basseng, who piloted the Chinese EV on its record-setting run. “Technically, something like this is not possible with a combustion engine. Thanks to the electric motor, the car is quiet, there are no load changes, and that allows me to focus even more on the track.”
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The Yangwang U9 features the world’s first mass-produced 1,200V ultra-high-voltage vehicle platform. Developed by BYD, the car is powered by the company’s latest li-ion phosphate batteries in BYD’s now-familiar “blade” configuration.
The U9 Xtreme’s record-setting run dethrones the previous Bugatti Chiron Super Sport 300+, which managed 304.8 mph back in 2019. The Bugatti now has to settle for the lesser “world’s fastest combustion-powered production car” title, which is objectively lame.
Definitely NOT lame
Yangwang U9 Xtreme; via BYD.
The company says it’s selling “no more than 30” of the Xtreme U9 EVs, presumably to customers with incredibly long driveways. The Xtreme version features smaller, 20″ wheels (instead of 21s), and gets wider, 325 mm tires (up from 275 mm) to match the rears. The fronts also ride on a narrower track.
You can watch Marc Messang put the 3,000 hp Yangwang U9 Xtreme electric hypercar to the test in the video, below, then let us know what you think of China’s first-ever world record-setting vehicle in the comments section at the bottom of the page.
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With dual electric motors pumping out 776 hp, over 400 miles of all-electric range, and a relatively low MSRP, the new AUDI E5 Flagship Quattro electric wagon is electrifying the Chinese wagon market – scoring over 10,000 orders in its first thirty minutes on sale!
First launched last fall, the new Audi-backed AUDI sub-brand kept the sexy wagon aesthetic but ditched the Germans’ interlocking rings and Auto Union heritage in favor of a simple, all-caps AUDI logo on the E concept wagon. Now seen in production trim, the production AUDI E5 Sportback is surprisingly true to the original concept – except in the horsepower department, that is.
But, while a production car having lower horsepower figures than the concept car that preceded it is pretty typical, the production AUDI E5 is different: it actually offers more peak power than the 765 hp concept!
That’s right, kids! the range-topping Flagship Quattro version of the new AUDI E5 Sportback offers buyers 776 horsepower (that’s 11 more than the concept), and gets 402 miles (CLTC) of range from its 100 kWh battery. And, while that version is a monster, even the base-level Pioneer version at just 235,900 yuan ($33,000, as I type this) offers a 76 kWh battery pack sending power to a 295 hp rear-mounted electric motor and over 600 km of range (~385 miles).
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It’s a solid achievement in value and tech, and the Audi people seem pretty proud of themselves. “The AUDI E5 Sportback is our first model based on the Advanced Digitized Platform, and it delivers on our brand promise: the best of both worlds,” says Fermín Soneira, CEO of the Audi and SAIC Cooperation Project. “Audi’s DNA and engineering excellence is blended with China’s digital ecosystem and innovations, specifically tailored for our tech-savvy customers.”
And it’s pretty.
AUDI E5 Sportback
The wagon’s exterior, while not necessarily shouting “Audi” in the conventional, Western sense, is still proportioned well enough to carry the four rings (or, looked at another way, a VW logo). But, while it’s a great-looking wagon on the outside, it’s on the inside that the all-new E5 AUDI Sportback really sets itself apart.
The interior of the AUDI E5 Sportback is noticeably different from any Audi model, being much more inline with similar entry-luxe EVs sold in China. The E5 dash also sports a 59″-inch” wide screen that stretches across the entire dash, digital side mirrors, Alcantara seating surfaces, and wireless phone chargers.
All that tech is powered by the QUALCOMM Snapdragon 8295 automotive chipset with 5-nanometer precision and the ability to perform 30 billion operations per second, and the Chinese-market AUDI OS offers what its makers call, “an intuitive experience designed to make the vehicle occupants’ lives easier.”
You can take a look at the new E5 Sportback’s interior, below, then let us know whether or not you think an Audi AUDI like this (and its purple mood lighting) would be a hot seller Stateside in the comments.
E5 Sportback interior
SOURCE | IMAGES: AUDI.
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