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An ultra-thin smart filter can significantly extend EV battery lifespan

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An ultra-thin smart filter can significantly extend EV battery lifespan


Car manufacturers and others are working intensively to develop lightweight, safe, and powerful batteries. The photo is from Volkswagen’s battery company PowerCo, which has built large factories in Germany, Spain, and Canada to produce high-quality battery cells. Credit: Volkswagen AG

Car manufacturers and others who need light, safe, powerful batteries are eager to adopt lithium-sulfur (Li-S) batteries. Not only do they store more energy, and are safer and faster to charge than today’s lithium-ion batteries—they’re cheaper to make, too.

It’s just that these next-generation wonder batteries have one big problem: They wear out very quickly. The reason is that they suffer from what is called the shuttle effect.

“It’s about chemical substances, lithium polysulfides (LPS), that are formed when the is in operation. The substances move between the electrodes, the positive anode and the negative cathode, in the battery. It is these substances that cause LiS batteries to degrade quickly, lose capacity and have a short lifespan,” said Önder Tekinalp, a postdoctoral fellow at NTNU’s Department of Chemical Engineering.

This also explains why this type of battery has not yet moved into our electric cars.

New, thin, smart filter

Tekinalp and his colleagues have developed a super-thin coating with very special properties that can change this. They have patented the coating via a project called HiSep-II. The coating has been given the same name as the project.

Inside a battery is also a separator. There is a partition between the electrodes, which makes it work effectively and prevents short circuits. When the HiSep II coating is placed on the outside of the wall, it acts as a smart filter.

This could make today’s heavy electric vehicle batteries lighter, safer and increase their range. The researchers behind the technology believe it is also ideal for use in aviation, space travel, drones and shipping.

Many people working to improve lithium-sulfur batteries concentrate on pure chemistry in cathode and electrolytes. The NTNU researchers have thus focused on the partition instead.

“The coating blocks the harmful chemical substances and allows useful lithium ions to pass freely,” Tekinalp said.

Slimmer, lighter battery pack

The lifespan of a battery is often measured in charge cycles. One cycle is the same as one full charge and one full discharge. The tests from the lab at Gløshaugen show that lithium-sulfur batteries equipped with HiSep-II can increase the number of charging cycles from 200 to 1,000. That lengthens the battery life by a factor of five.

The battery pack in an electric car consists of many parts. The researchers say the can slim down an 800-volt battery pack by more than 200 kilograms. That, in turn, means significantly better efficiency and a much longer range. The fact that this next generation of electric car batteries are made from sulfur, of which there is a lot, also makes them cheap to produce.

‘Real alternative for electric cars’

Tekinalp believes their research is a breakthrough, which will contribute to making lithium-sulfur batteries a real alternative for electric cars.

“Although HiSep-II has not yet been used in electric cars, we have shown that it can handle the shuttle effect. It has been the major brake on commercial exploitation—until now,” says the researcher.

HiSep-II patented the separator in 2023, and is working with NTNU Technology Transfer (TTO) to get it to the market.

“The goal is to scale up the technology and license it to an industrial partner so that it can be used in everything from electric cars to storage of green energy,” says Kristina Nydal, a business developer at TTO.

She believes Hi-Sep II can contribute to increased battery safety, and says that the technology is ideal for use in areas such as aviation, aerospace, , drones and maritime transport.

“It is also an attractive and cost-effective alternative for storing energy. Especially where longevity and stability are crucial factors,” she said.

The production process is environmentally friendly, the technology is designed to be easily scaled up, and it can work with today’s lithium-based batteries.

Scaling up and testing

Before they are ready for the market, external players must test the technology. The filter must be built into Li-S batteries, and its performance must be checked and confirmed by an independent third party. Documenting that the technology is reliable and stable in the long term is crucial. They must also ensure that the new smart filter can be produced safely, economically profitably and with consistent quality.

Patent processes cost a lot and should be adapted to the industrial use of the technology. TTO is now looking for an interested licensee who can finance further patenting and commercialization and participate in the planned tests.

When asked how the technology stands apart from sulfur batteries, Tekinalp replied, “Many Li-S breakthroughs focus on improving cathode materials or electrolytes. The HiSep-II targets the separator, or filter, alone. It is a simpler, more scalable solution without the use of complex materials. The is environmentally friendly, the technology is designed to be easily scaled up, and it can work together with today’s lithium-based batteries.”

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Asus Made a Split Keyboard for Gamers—and Spared No Expense

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Asus Made a Split Keyboard for Gamers—and Spared No Expense


The wheel on the left side has options to adjust actuation distance, rapid-trigger sensitivity, and RGB brightness. You can also adjust volume and media playback, and turn it into a scroll wheel. The LED matrix below it is designed to display adjustments to actuation distance but feels a bit awkward: Each 0.1 mm of adjustment fills its own bar, and it only uses the bottom nine bars, so the screen will roll over four times when adjusting (the top three bars, with dots next to them, illuminate to show how many times the screen has rolled over during the adjustment). The saving grace of this is that, when adjusting the actuation distance, you can press down any switch to see a visualization of how far you’re pressing it, then tweak the actuation distance to match.

Alongside all of this, the Falcata (and, by extension, the Falchion) now has an aftermarket switch option: TTC Gold magnetic switches. While this is still only two switches, it’s an improvement over the singular switch option of most Hall effect keyboards.

Split Apart

Photograph: Henri Robbins

The internal assembly of this keyboard is straightforward yet interesting. Instead of a standard tray mount, where the PCB and plate bolt directly into the bottom half of the shell, the Falcata is more comparable to a bottom-mount. The PCB screws into the plate from underneath, and the plate is screwed onto the bottom half of the case along the edges. While the difference between the two mounting methods is minimal, it does improve typing experience by eliminating the “dead zones” caused by a post in the middle of the keyboard, along with slightly isolating typing from the case (which creates fewer vibrations when typing).

The top and bottom halves can easily be split apart by removing the screws on the plate (no breakable plastic clips here!), but on the left half, four cables connect the top and bottom halves of the keyboard, all of which need to be disconnected before fully separating the two sections. Once this is done, the internal silicone sound-dampening can easily be removed. The foam dampening, however, was adhered strongly enough that removing it left chunks of foam stuck to the PCB, making it impossible to readhere without using new adhesive. This wasn’t a huge issue, since the foam could simply be placed into the keyboard, but it is still frustrating to see when most manufacturers have figured this out.



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These Sub-$300 Hearing Aids From Lizn Have a Painful Fit

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These Sub-0 Hearing Aids From Lizn Have a Painful Fit


Don’t call them hearing aids. They’re hearpieces, intended as a blurring of the lines between hearing aid and earbuds—or “earpieces” in the parlance of Lizn, a Danish operation.

The company was founded in 2015, and it haltingly developed its launch product through the 2010s, only to scrap it in 2020 when, according to Lizn’s history page, the hearing aid/earbud combo idea didn’t work out. But the company is seemingly nothing if not persistent, and four years later, a new Lizn was born. The revamped Hearpieces finally made it to US shores in the last couple of weeks.

Half Domes

Photograph: Chris Null

Lizn Hearpieces are the company’s only product, and their inspiration from the pro audio world is instantly palpable. Out of the box, these look nothing like any other hearing aids on the market, with a bulbous design that, while self-contained within the ear, is far from unobtrusive—particularly if you opt for the graphite or ruby red color scheme. (I received the relatively innocuous sand-hued devices.)

At 4.58 grams per bud, they’re as heavy as they look; within the in-the-ear space, few other models are more weighty, including the Kingwell Melodia and Apple AirPods Pro 3. The units come with four sets of ear tips in different sizes; the default mediums worked well for me.

The bigger issue isn’t how the tip of the device fits into your ear, though; it’s how the rest of the unit does. Lizn Hearpieces need to be delicately twisted into the ear canal so that one edge of the unit fits snugly behind the tragus, filling the concha. My ears may be tighter than others, but I found this no easy feat, as the device is so large that I really had to work at it to wedge it into place. As you might have guessed, over time, this became rather painful, especially because the unit has no hardware controls. All functions are performed by various combinations of taps on the outside of either of the Hearpieces, and the more I smacked the side of my head, the more uncomfortable things got.



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CEOs are taking the lead on AI initiatives | Computer Weekly

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CEOs are taking the lead on AI initiatives | Computer Weekly


The AI radar 2026 study from Boston Consulting Group (BCG) has reported that artificial intelligence (AI) investment is set to double in 2026 compared with 2025. The study, based on a survey of 2,400 business executives, of which 640 are CEOs, found that almost every chief executive polled (94%) is committed to continuing investments even if returns take time to materialise.

In fact, almost all (90%) of the CEOs polled believe AI agents will deliver a measurable return on investment (ROI) by 2026.

The study found that over two-thirds (72%) of CEOs now act as the primary decision-maker for AI in their organisation, taking responsibility from CIOs, who were previously the main lead in AI projects.

Christoph Schweizer, CEO of BCG, said: “Corporate investment in AI is here to stay. 94% of our survey respondents say they will continue to invest in 2026, even if it takes time to see the return. They intend to spend 1.7% of revenue on AI comprehensively. That is more than twice of what it was a year ago.”

BCG’s research suggests that companies leading the way in AI deployments are investing 60% of their AI budgets on agentic AI (AI agents). “We tell CEOs that they need to make AI a key priority,” he said. “The way they own it, the way they talk about it, the way they bring their organisation along. They need to spend time on deepening their own AI literacy.”

BCG recommends that CEOs understand the tools, the technology, and keep in touch with technology suppliers and partners. “Ultimately, you need to know what you talk about so that you can bring your organisation along and steer for maximum return,” added Schweizer.

With regards to the adoption of agentic AI, BCG found that more than 30% of the CEOs investing in AI during 2026 said they would be building agents to deploy in the work environment. Vladimir Lukic, global leader of BCG’s Technology and Digital Advantage, said: “AI agents will truly be something that will unlock organisations and deliver a return on investment within 2026.”

Sylvain Duranton, head of BCG X, said the research highlights differences in CEOs’ AI confidence in different regions. BCG reported that UK businesses are less likely than global peers to make large-scale investments in AI in 2026.

The study found that only 24% of UK companies plan to invest more than $50m in AI, compared with much higher shares in countries leading the AI race, such as Greater China (68%), Japan (53%), the European Union (38%) and the Middle East (41%). BCG also reported that British CEOs are the most sceptical of AI’s potential return on investment and less involved in decision-making on AI.

Discussing the regional differences, Duranton said: “CEOs in the East, in India, in China, in Japan, the Middle East and Africa tend to be highly confident that AI is going to be a positive return on investment move. In the global West – Europe, the US and the UK – there’s a bit more caution.”

In his experience, many Asian companies have huge confidence and boldness in moving forward with AI. However, many European and US firms operate in a different way. “There’s some more skepticism in their workforce,” said Duranton. “There potentially is some more regulation that they deal with.”

Firms leading the way with AI deployments, which BCG categorise as “trailblazers”, tend to focus heavily on upskilling the workforce. Jessica Apotheker, chief marketing officer and managing director at BCG, said: “Trailblazers are putting 60% of their AI budget behind upskilling and retraining their workforce. So, they’re really wanting to go deep in the organisation, changing the way people work, putting people behind this new technology.”

BCG reported that in these organisations, 70% of the workforce has been upskilled or reskilled on AI.



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