Tech
MXene current collectors could reduce size and improve recyclability of Li-ion batteries
The vast majority of consumer electronics use lithium-ion batteries, and with each generation, these devices are designed smaller, lighter and with longer battery life to meet the growing demands of consumers. Each new iteration also brings the batteries that power the devices closer to the limits of their size, weight and performance.
Researchers are constantly testing new approaches and materials for making lightweight, high-performance components. The latest contender is MXene, a type of metallically conductive two-dimensional nanomaterial discovered by Drexel University researchers that has recently demonstrated potential as a current collector, the part of the battery that directs electrical current to its electrodes.
A recent paper from Drexel researchers reports that a current collector made of MXene film could reduce the battery’s weight and thickness while improving its available capacity.
Published in the journal Cell Reports Physical Science, the paper reports that MXene current collectors perform as well as the copper foils being used in current lithium-ion batteries, but they are three to four times thinner and about 10 times lighter.
Using them to make the battery components would reduce the overall weight contribution from inactive materials, allowing for more energy-storing material to be used without increasing the battery’s weight, thus improving the battery’s capacity.
The researchers also demonstrated that the MXene current collectors can be readily recycled for use in other batteries, an important step toward reducing battery waste and conserving limited material resources.
Current collectors are key to battery performance because they direct the flow of electrons within the battery, directing them to and from the electrode, which translates the chemical energy into the electrical current that powers electronic devices. They are also prime contributors to a battery’s weight—comprising nearly 15% of its total weight.
“Recent progress in battery technology is centered on improving capacity while reducing their weight,” said Yury Gogotsi, Ph.D., Distinguished University and Bach professor in Drexel’s College of Engineering, who was a leader of the research.
“But the field has also widely acknowledged the importance of finding recyclable alternatives to current battery components in order to ensure their sustainable manufacturing. Our findings suggest that MXene materials could be a strong candidate for use in the batteries of the future.”
MXenes have been tested in dozens of applications—including several in energy storage—since their discovery at Drexel more than a decade ago. Their aptitude for use as a current collector is tied to their exceptional electrical conductivity, excellent flexibility and high mechanical strength. MXenes also remain electrochemically stable in acidic and corrosive electrolytes, and are dispersible in water, which allows for easy processing.
“This is an exciting finding because MXenes are compatible with a variety of electrode materials, so they have the potential to improve next-generation batteries without requiring significant structural design changes,” said Professor Patrice Simon, Ph.D., a co-author of the research from Université de Toulouse in France.
The final test of the components examined the cycling stability and recyclability of the MXene current collector. After eight weeks of continuous charging and discharging, the MXene–graphite electrode maintained good adhesion; the graphite active material remained evenly distributed, and did not detach from the MXene film.
The MXene current collector also preserved its layered structure, showing no degradation. Using a simple and environmentally friendly recycling process developed by the team, the electrode was disassembled and reconstituted using reclaimed materials for the current collector. Electrochemical testing confirmed that its performance remained unchanged.
“As battery materials become increasingly scarce, and sustainability and circular economy become increasingly important, it will be essential to design components that can be reused,” said Yuan Zhang, Ph.D., who is a post-doctoral researcher in Gogotsi’s lab and co-author of the research.
“Thanks to their outstanding electrochemical durability, MXenes can be recycled without losing much of their exceptional properties.”
The investigation was led by Sokhna Dieng, Schlumberger Future Fellow in Gogotsi’s lab, who contributed to the work as part of her doctoral research. She plans to continue exploring MXenes as conductive additives and other passive components in batteries that can improve performance and also enhance safety by preventing dendrite growth.
“We envision batteries with MXene components being used one day in wearable and portable microelectronics, where size and weight are absolutely critical and the amount of material required is minimal,” Gogotsi said.
“Another potential use is in systems where low weight is essential, such as drones or other flying vehicles.”
More information:
Sokhna Dieng et al, MXene current collectors for recyclable batteries with improved capacity, Cell Reports Physical Science (2025). DOI: 10.1016/j.xcrp.2025.102874
Citation:
MXene current collectors could reduce size and improve recyclability of Li-ion batteries (2025, October 13)
retrieved 13 October 2025
from https://techxplore.com/news/2025-10-mxene-current-collectors-size-recyclability.html
This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
part may be reproduced without the written permission. The content is provided for information purposes only.
Tech
The 5 Big ‘Known Unknowns’ of Donald Trump’s New War With Iran
More recently, Iran has been a regular adversary in cyberspace—and while it hasn’t demonstrated quite the acuity of Russia or China, Iran is “good at finding ways to maximize the impact of their capabilities,” says Jeff Greene, the former executive assistant director of cybersecurity at CISA. Iran, in particular, famously was responsible for a series of distributed-denial-of-service attacks on Wall Street institutions that worried financial markets, and its 2012 attack on Saudi Aramco and Qatar’s Rasgas marked some of the earliest destructive infrastructure cyberattacks.
Today, surely, Iran is weighing which of these tools, networks, and operatives it might press into a response—and where, exactly, that response might come. Given its history of terror campaigns and cyberattacks, there’s no reason to think that Iran’s retaliatory options are limited to missiles alone—or even to the Middle East at all.
Which leads to the biggest known unknown of all:
5. How does this end? There’s an apocryphal story about a 1970s conversation between Henry Kissinger and a Chinese leader—it’s told variously as either Mao-Tse Tung or Zhou Enlai. Asked about the legacy of the French revolution, the Chinese leader quipped, “Too soon to tell.” The story almost surely didn’t happen, but it’s useful in speaking to a larger truth particularly in societies as old as the 2,500-year-old Persian empire: History has a long tail.
As much as Trump (and the world) might hope that democracy breaks out in Iran this spring, the CIA’s official assessment in February was that if Khamenei was killed, he would be likely replaced with hardline figures from the Islamic Revolutionary Guard Corps. And indeed, the fact that Iran’s retaliatory strikes against other targets in the Middle East continued throughout Saturday, even after the death of many senior regime officials—including, purportedly, the defense minister—belied the hope that the government was close to collapse.
The post-World War II history of Iran has surely hinged on three moments and its intersections with American foreign policy—the 1953 CIA coup, the 1979 revolution that removed the shah, and now the 2026 US attacks that have killed its supreme leader. In his recent bestselling book King of Kings, on the fall of the shah, longtime foreign correspondent Scott Anderson writes of 1979, “If one were to make a list of that small handful of revolutions that spurred change on a truly global scale in the modern era, that caused a paradigm shift in the way the world works, to the American, French, and Russian Revolutions might be added the Iranian.”
It is hard not to think today that we are living through a moment equally important in ways that we cannot yet fathom or imagine—and that we should be especially wary of any premature celebration or declarations of success given just how far-reaching Iran’s past turmoils have been.
Defense Secretary Pete Hegseth has repeatedly bragged about how he sees the military and Trump administration’s foreign policy as sending a message to America’s adversaries: “F-A-F-O,” playing off the vulgar colloquialism. Now, though, it’s the US doing the “F-A” portion in the skies over Iran—and the long arc of Iran’s history tells us that we’re a long, long way from the “F-O” part where we understand the consequences.
Let us know what you think about this article. Submit a letter to the editor at mail@wired.com.
Tech
This Backyard Smoker Delivers Results Even a Pitmaster Would Approve Of
While my love of smoked meats is well-documented, my own journey into actually tending the fire started just last spring when I jumped at the opportunity to review the Traeger Woodridge Pro. When Recteq came calling with a similar offer to check out the Flagship 1600, I figured it would be a good way to stay warm all winter.
While the two smokers have a lot in common, the Recteq definitely feels like an upgrade from the Traeger I’ve been using. Not only does it have nearly twice the cooking space, but the huge pellet hopper, rounded barrel, and proper smokestack help me feel like a real pitmaster.
The trade-off is losing some of the usability features that make the Woodridge Pro a great first smoker. The setup isn’t as quite as simple, and the larger footprint and less ergonomic conditions require a little more experience or patience. With both options, excellent smoked meat is just a few button presses away, but speaking as someone with both in their backyard, I’ve been firing up the Recteq more often.
Getting Settled
Photograph: Brad Bourque
Setting up the Recteq wasn’t as time-consuming as the Woodridge, but it was more difficult to manage on my own. Some of the steps, like attaching the bull horns to the lid, or flipping the barrel onto its stand, would really benefit from a patient friend or loved one. Like most smokers, you’ll need to run a burn-in cycle at 400 degrees Fahrenheit to make sure there’s nothing left over from manufacturing or shipping. Given the amount of setup time and need to cool down the smoker after, I would recommend setting this up Friday afternoon if you want to smoke on a Saturday.
Tech
Make the Most of Chrome’s Toolbar by Customizing It to Your Liking
The main job of Google Chrome is to give you a window to the web. With so much engaging content out there on the internet, you may not have given much thought to the browser framework that serves as the container for the sites you visit.
You’d be forgiven for still using the default toolbar configuration that was in place when you first installed Chrome. But if you take a few minutes to customize it, it can make a significant difference to your browsing. You can get quicker access to the key features you need, and you may even discover features you didn’t know about.
If you’re reading this in Chrome on the desktop, you can experiment with a few customizations right now—all it takes is a few clicks. Here’s how the toolbar in Chrome is put together, and all the different changes you can make.
The Default Layout
Take a look up at the top right corner of your Chrome browser tab and you’ll see two key buttons: One reveals your browser extensions (the jigsaw piece), and the other opens up your bookmarks (the double-star icon). There should also be a button showing a downward arrow, which gives you access to recently downloaded files.
Right away, you can start customizing. If you click the jigsaw piece icon to show your browser extensions, you can also click the pin button next to any one of these extensions to make it permanently visible on the toolbar. While you don’t want your toolbar to become too cluttered, it means you can put your most-used add-ons within easy reach.
For the extension icons you choose to have on the toolbar, you can choose the way they’re arranged, too: Click and drag on any of the icons to change its position (though the extensions panel itself has to stay in the same place). To remove an extension icon (without uninstalling the extension), right-click on it and choose Unpin.
Making Changes
Click the three dots up in the top right corner of any browser window and then Settings > Appearance > Customize your toolbar to get to the main toolbar customization panel, which has recently been revamped. Straight away you’ll see toggle switches that let you show or hide certain buttons on the toolbar.
-
Business1 week agoEye-popping rise in one year: Betting on just gold and silver for long-term wealth creation? Think again! – The Times of India
-
Politics1 week agoPakistan carries out precision strikes on seven militant hideouts in Afghanistan
-
Sports1 week agoKansas’ Darryn Peterson misses most of 2nd half with cramping
-
Tech1 week agoThese Cheap Noise-Cancelling Sony Headphones Are Even Cheaper Right Now
-
Business1 week agoEquinox chairman says ‘health is the new luxury’ as wellness spending soars
-
Sports1 week agoHow James Milner broke Premier League’s appearances record
-
Tech1 week agoThe Supreme Court’s Tariff Ruling Won’t Bring Car Prices Back to Earth
-
Entertainment1 week agoViral monkey Punch makes IKEA toy global sensation: Here’s what it costs

