Tech
Long-range EV batteries could last 2.8 times longer thanks to new gel electrolyte
A research team affiliated with UNIST has introduced a gel-like material that could extend the lifespan and enhance the safety of high-voltage electric vehicle (EV) batteries designed for long-distance driving.
This innovative electrolyte actively prevents the generation of reactive oxygen species (ROS), the primary cause of battery aging, resulting in a 2.8-fold increase in battery lifespan and a reduction in swelling by one-sixth.
Led by Professor Hyun-Kon Song from the School of Energy and Chemical Engineering at UNIST, in collaboration with Dr. Seo-Hyun Jung of the Korea Research Institute of Chemical Technology (KRICT) and Dr. Chihyun Hwang of the Korea Electronics Technology Institute (KETI), the research team developed an anthracene-based semi-solid gel electrolyte (An-PVA-CN) gel polymer electrolyte (GPE) that fundamentally blocks the release of ROS from the electrodes during high-voltage charging.
The findings have been published in Advanced Energy Materials.
High-voltage lithium-ion batteries (LIBs), charged above 4.4V, enable greater energy storage, but also pose risks. The increased voltage destabilizes oxygen in the nickel-rich cathode, converting it into ROS that produce gases, heightening the risk of explosions and shortening battery life.
The new electrolyte’s anthracene component binds with unstable surface oxygen, preventing it from forming ROS, called single oxygen (1O2), which act as seeds for further degradation. Additionally, anthracene captures and removes existing reactive oxygen, providing a dual layer of protection.
Another key component, the nitrile (-CN) group, stabilizes nickel metal in the cathode, preventing dissolution and structural deformation during charging.
First author Jeongin Lee explained, “What sets this research apart is that it directly prevents the formation of ROS at the source. Previous approaches either neutralized ROS after they formed or manipulated the electrode to suppress oxygen release.”
Batteries equipped with this electrolyte maintained 81% of their initial capacity after 500 charge-discharge cycles at a high voltage of 4.55V, whereas conventional batteries dropped below 80% capacity after only 180 cycles.
This indicates a nearly threefold increase in lifespan. Furthermore, gas evolution—and consequently, swelling—was significantly reduced; the gel electrolyte limited expansion to approximately 13 micrometers, compared to 85 micrometers in conventional batteries, achieving about a sixfold reduction.
Professor Song stated, “This study demonstrates that oxygen reactions in high-voltage batteries can be controlled at the electrolyte design stage. This principle could be applied to develop lightweight LIBs for aerospace applications and large-scale energy storage systems.”
More information:
Jeongin Lee et al, Electrolyte‐Driven Suppression of Oxygen Dimerization and Oxygen Evolution in High‐Voltage Li‐Ion Batteries, Advanced Energy Materials (2025). DOI: 10.1002/aenm.202503180
Citation:
Long-range EV batteries could last 2.8 times longer thanks to new gel electrolyte (2025, November 14)
retrieved 14 November 2025
from https://techxplore.com/news/2025-11-range-ev-batteries-longer-gel.html
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Tech
H&R Block Coupon: $50 Off In-Store Services
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Tech
Telefónica accelerates its transformation to autonomous networks | Computer Weekly
Telefónica has announced that its strategy to transform network processes through automation and artificial intelligence (AI) has “far exceeded” initial expectations.
The Madrid-based global comms provider’s Autonomous Network Journey (ANJ) programme was launched in 2021, and is based on the Autonomous Networks framework defined by the TM Forum, which aims to provide a systematic method for operators from AN strategy planning to implementation, and guide operators to carry out AN work more efficiently.
For Telefónica, network autonomy is conceived as a path that advances from fully manual environments to fully autonomous networks, classified in levels 0 to 5. At their highest levels, networks are capable of self-learning, span multiple domains, and possess self-configuration, self-optimisation and self-healing capabilities. This is said to ensure “the highest levels” of efficiency and reliability.
Telefónica recurrently measures the evolution of autonomy in each principal network domain – fixed access, mobile access, transport, IP, core and telco cloud – as well as in what it calls a number of key processes such as planning, testing, deployment and operations. In November 2025, the operator revealed a roadmap to reach an average level of autonomy of 3.75 by 2028, and reach level 4 by 2030.
The resulting weighted indicator reflects the actual maturity of each of the operations in the countries in which it operates, and shows how each country is progressing towards more predictive, efficient and self-sufficient operating models. The group’s global level consolidates the progress of the operations in a standardised way, offering a unified view of Telefónica’s progress towards autonomous maturity.
Telefónica says it finished 2025 with a total of 12 Level 4 use cases, a category it says already reflects a “very advanced” level in the development of autonomous networks and thus accelerates its transformation process. Level 4 use cases are defined as those capable of acting autonomously based on the intention transmitted by a human and are essential to raise the global average of autonomy.
In addition, it noted that what seemed to be a long-term journey to reach its objectives has accelerated significantly thanks to the strong commitment of the operations teams of Telefónica Spain, O2 Germany and Vivo (Brazil). And thanks to the joint effort of the three operators, Telefónica closed 2025 with 12 Level 4 use cases, all of them fully operational. Among these is the autonomous creation of network capacity with Vivo’s AI (Fractal), and the operator is also deploying autonomous detection and resolution on Vivo’s virtualised 5G Core and autonomous creation of client fibre capacity (Fractal II).
It is also creating a digital twin for the transport network (NetOptimizer) from O2 Germany and Intelligent planning for the O2 Germany transmission network. The Germany subsidiary is also deploying automation for operations analytics, ticketing and diagnostics though a virtual assistant, and automation is part of an in-service software change of Core 5G (InService Software Upgrade).
An Intelligent multi-domain correlation at the customer level is offering proactive and automated detection of impact, anomalies and root cause in 4G/5G at O2 Germany.
Work in Spain encompasses autonomous detection and resolution of weaknesses in Telefónica España’s IP network and Telefónica Spain’s intelligent planning for the deployment of customer fibre (Smart Capex). Other projects include NetCheck for error-free software changes and intelligent configuration of Telefónica España’s IP network.
Overall, Telefónica regards the achievement of 12 Level 4 use cases as consolidating the group’s position as a European benchmark in network automation and demonstrating that “the combination of technology, talent and focus is the right way to move towards an autonomous network”.
Tech
A $10K Bounty Awaits Anyone Who Can Hack Ring Cameras to Stop Sharing Data With Amazon
Usually, when you see a feel-good story about finding a lost dog, you don’t immediately react with fear and revulsion. But that was indeed the case in response to a Super Bowl commercial from Amazon-owned security camera company Ring. There’s now a group offering to dole out a $10,000 bounty to wrest back control of the user data Ring controls.
The ad showed off a new feature from Ring called Search Party. It uses a network of Ring cameras to scour a neighborhood for signs of lost dogs. But as the details of a leaked internal Ring email reported by 404 Media revealed, the service could eventually be used to find other animals and people as well.
The commercial was met largely with widespread criticism across social media and the tech press, which called out Search Party for essentially being a thinly-veiled neighborhood surveillance dragnet. People are even publicly destroying their Ring cameras. In response, Ring immediately canceled its partnership with the controversial AI surveillance company Flock. Ring CEO Jamie Siminoff has been on something of an apology tour since the Super Bowl commercial aired. (A Ring spokesperson acknowledged our request for comment and says the company will provide one shortly; we’ll update this story when we hear back.)
The Fulu Foundation, a group founded by repair advocate and YouTuber Louis Rossmann, pays out bounties to people who can remove user-hostile features on connected devices. The nonprofit saw this pushback as a moment of opportunity for people to take back control of their devices.
“It’s been an interesting moment for people to grasp exactly the trade-off that they have had to accept when they installed these security doorbell cameras,” says Fulu cofounder Kevin O’Reilly. “People who install security cameras are looking for more security, not less. At the end of the day, control is at the heart of security. If we don’t control our data, we don’t control our devices.”
Fulu’s latest bounty is for Ring’s video doorbell cameras, meant to encourage hackers and tinkerers to disable software features that require the devices to send data to Amazon. The reward is a potential payout of $10,000 or more.
To score the bounty, the winner will have to adhere to a few requirements designed to make sure the hardware itself stays in working order. After modifications, the device must be able to work with a local PC or server, and be capable of halting data sent to Amazon servers or requiring a connection to other Amazon hardware. All of this must be done without disabling on-device hardware features like motion detecting and color night vision. The job also has to be accomplishable with “readily available and inexpensive tooling” and “instructions that a moderately technical user could carry out” in less than an hour.
“This needs to be a weekend project,” O’Reilly says, “where someone who was creeped out by a commercial and wants to take back control can take care of it, get it done, and be able to sleep soundly at night knowing that they’re the only ones who can see their footage.”
The first person to accomplish all of that with a Ring camera—and prove they can do it—gets the money. The reward starts at $10,000, but will likely grow as donors contribute more money (it’s already sitting closer to $11,000 as of publication). On top of that, Fulu will award up to an additional $10,000 to match donations for the winner.
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