Nanomaterial charges everyday batteries in seconds

If you want a battery that charges in seconds rather than hours, you go for a supercapacitor . There are some catches to that, though: either you give up the long-lasting energy of a chemical battery (like the lithium pack in your phone) or have to resort to exotic storage tech to get a long lifespan. Drexel researchers think they have a better balance. They’ve developed electrodes based on a nanomaterial, MXene, that promise extremely quick charging times for chemical batteries. The near-2D design combines an oxide-metal ‘sandwich’ with hydrogel to create a structure that’s extremely conductive, but still lets ions move freely as the battery builds up a charge. In the lab’s design, you can charge MXene electrodes within “tens of milliseconds” — you could top up a phone in seconds or an electric car in minutes . As is often the case, the big challenge is scaling this up to production-quality energy cells. It could be years before this reaches something you can buy. However, its very focus on supporting chemical batteries makes it more practical. Factories would only have to adapt to the new electrodes, rather than throwing out their existing battery know-how. If nothing else, the existence of the MXene design shows that ultra-fast charging is becoming more realistic. Via: ScienceAlert Source: Drexel University , Nature

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Nanomaterial charges everyday batteries in seconds

Zero’s DS 6.5 motorcycle was built for urban commuters

For other riders, an electric motorcycle is a two-wheeled invitation to talk. It’s the lack of sound that initially tips them off. They always ask about range and speed. But mostly range. How far can they ride before they would have to plug in? With the new Zero Motorcycles DS 6.5 , it’s a conversation that requires explaining a few caveats about its 67 mile in-city range (it has a smaller battery so it’s cheaper and lighter). Surprisingly, they get it. The Zero DS 6.5 is the motorcycle company’s attempt to find a middle ground between the 147-mile range 13kWh DS and its thrilling (but requires an experienced rider) FX and FXS line . Electric bikes are already more expensive than their gas-powered counterparts, so if they can shave $3, 000 off the price of a DS by cutting its battery in half, maybe more people would be interested. It’s a financial compromise that on paper looks like a rather boring bike thanks in part to the reduction in horsepower. On the road though, the DS 6.5 is just as enjoyable as its more powerful sibling. In some cases, more so. The biggest difference between the 13 and 6.5 is the battery size, but the byproduct of that is that the 6.5 loses nearly 100 pounds. That weight saving is immediately apparent when you get on the bike — it feels much nimbler. That translates to quicker maneuvers while navigating the obstacle-filled streets of San Francisco. The weight reduction also means that the drop in horsepower (the DS 13 has 60 while the DS 6.5 tops out at 37) isn’t that noticeable. The 70 pounds of torque also help. The power is there whenever you need it — just twist the throttle and go until you need to stop. The 6.5 is equipped with anti-lock brakes that kept the bike from locking up the wheels even on the slightly moist roads in the Bay Area. Unfortunately (but really fortunately for me) I wasn’t able to ride the bike in the rain to see how well it stopped in wet conditions. Soaked street test aside, the brakes felt solid and I felt confident each time I had to slam on them to stop from being killed by the growing number of inattentive drivers out there. Seriously, put your phone down and use a blinker before changing lanes. The smaller battery and range only reared its head on a trip to Oakland that ended with me riding against a powerful headwind that sucked 25 percent of my power heading back over the Bay Bridge, leaving me with 15 percent power to get across San Francisco. I made it with power to spare, but it’s a reminder that highway speeds and weather can take their toll on the battery. For the most part, I averaged about 55 miles between charges while riding in the city and mostly in sport mode instead of eco mode. I’m sure if I had decided to ride slower I could have gotten a bit closer to the rated 67 miles in the city. But if your commute involves a lot of high-speed cruising the rating plummets quickly to 47 miles riding in both the city and highway and 35 miles freeway only if you’re riding at 70 miles per hour. Like previous Zero bikes, the DS 6.5 can be charged directly from a standard 120-volt outlet without any special adaptors. It’ll go from zero to fully charged in just over four-and-half-hours. It likely means an overnight charge but there is the option to add a level-two charging port like those found on electric cars to the bike. The optional $2, 000 charge tank accessory supports all those EV charging stations that have been popping up and it drops the total charge time down to 1.4 hours. It’s an expensive option, but if your access to wall sockets is limited, it might be worth the extra cash. That’s where you have to make the decision about the DS 6.5. Yes, it’s $3, 000 cheaper than the 13kWH version, but it’s still going to cost you $11, 000 (not counting the Charge Tank). Meanwhile, the go-to DS — the Kawasaki KLR 650 — is just shy of $7, 000. But while these bikes look similar, the KLR is an adventure bike. It’s ready for long rides both on and off road. The Zero DS 6.5 is a city bike that is ready for some offroading, but in reality, the crumbling streets of San Francisco (and other cities) make the bike’s off-road capabilities almost necessary for two-wheeled commuters. The lack of a clutch, while initially odd, is also perfect for stop and go traffic and lane splitting (only in California). And there’s another feature that will make commuters happy: That smaller battery opened up room for a storage area large enough for a trip to the corner market. That storage joins the lockable compartment that resides where the gas tank would usually be. Unless you get the $2, 000 charge tank, that is. So, the Zero Motorcycle DS 6.5 isn’t going to take you on long mountain rides or trips through the desert regardless of its off-road capabilities. But what it will do is get you around an urban area where its suspension and high sitting position make it ideal for navigating our crumbling infrastructure. Like other electric vehicles, the DS 6 is pricey, but various incentives (that vary from state to state and from county to county) will bring the price down. And if you factor in the gas and maintenance savings (no more oil changes!) it starts to make more financial sense. But more importantly, it’s a joy to ride. It’s not as exciting as the FXS, but not every ride needs to be a seat-of-your-pants extravaganza. Sometimes, you just need to get to work.

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Zero’s DS 6.5 motorcycle was built for urban commuters

New zinc battery competes with lithium-ion

Enlarge / Lithium-ion batteries do a lot of great things, but they also do this more often than we’d like. (credit: Crushader) Lithium batteries are currently the belle of the battery ball. They have a lot going for them, including high energy storage for their weight and the ability to charge and recharge many times before losing much capacity. But we’re all familiar with the drawbacks, too. Lithium-ion batteries pose a fire risk, and the lithium and cobalt used in them aren’t the most abundant elements, which makes things more expensive. Plenty of other possible battery chemistries could compete with lithium, but getting them to live up to their theoretical potential is difficult. Zinc, for example, performs admirably in your non-rechargeable alkaline batteries, and it could theoretically make a safer and cheaper rechargeable one—with a water-based electrolyte rather than a flammable organic one. This hasn’t happened, though, and the reason becomes apparent if you throw the batteries under a microscope. Read 14 remaining paragraphs | Comments

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New zinc battery competes with lithium-ion

Tiny liquid battery cools chips while powering them

Scientists from IBM and ETH Zurich university have built a tiny “flow” battery that has the dual benefit of supplying power to chips and cooling them at the same time. Even taking pumping into account, it produces enough energy to power a chip while dissipating much more heat than it generates. The result could be smaller, more efficient chips, solar cells that store their own energy or devices used for remote monitoring that don’t require external power sources. “Redox flow” batteries that use liquid electrolytes are normally used on a large scale to store energy. For instance, Harvard Researchers recently created one that can last over ten years with very little degradation, making it ideal to store solar or wind energy. Building them on a scale tiny enough for chips is another matter, however. The team from ETH Zurich and IBM managed to find two liquids that are suitable both as flow-battery electrolytes and cooling agents that can dissipate heat from chips in the same circuit. “We are the first scientists to build such a small flow battery so as to combine energy supply and cooling, ” says doctoral student Julian Marschewski. Using 3D printing, the team developed a wedge-shaped micro-channel system that supplies the system with electrolytes using very little pumping power. The resulting electrodes press liquid into the membrane layer where ions can flow, generating power. The result is a system that generates 1.4 watts per square centimeter, with 1 watt left over to power the battery after taking pumping into account. Moreover, it gets rid of a lot more heat than it makes, pulling off the neat trick of powering and cooling chips at the same time. The battery needs to generate more electricity than it does right now, so the idea now needs to shift from the research into the engineering stages. However, the team thinks that it has a lot of potential for not just chips, but also lasers that require internal cooling, solar cells that store electricity directly in the battery cell and even large flow batteries optimized with liquid cooling channels. Source: Eth Zurich

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Tiny liquid battery cools chips while powering them

Collapsible 24" Display Explodes Onto Kickstarter

This might be the fastest we’ve ever seen anything get Kickstarted. Just 35 minutes after going live SPUD , the Spontaneous Pop-Up Display with a 24-inch screen, hit its $33, 000 goal. In scarcely 24 hours it’s already over $130, 000 pledges and climbing. In the pitch video, you get a much better look at the system than in the sneak peek we showed you on Monday: Here are some of the details we’ve been waiting for: The screen isn’t glass, but a crack- and chip-proof vinyl composite that is wrinkle-resistant. The rear projection onto the screen reportedly “promises ultra-sharp images, ” and the developers report that it does not require a dim environment to be used in. Should the device crack $250, 000 in funding (which it surely will, given that there’s still 44 days left in the campaign), the battery will be upgraded to last for a maximum of 10 hours rather than 6. SPUD is expected to retail for $499; early-bird pledges at a reduced $349 price are all gone, but at press time there were still some $399 early-birds available. Shipping is scheduled for June of next year. Here’s the closest thing they’ve got to a real-world demo: This thing looks pretty amazing. Never mind the entertainment applications; this thing would be a boon to designers who are traveling with a laptop and unexpectedly need to attend to CAD emergencies.

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Collapsible 24" Display Explodes Onto Kickstarter

Rimac’s electric bike can go 150 miles on a single charge

Rimac has revealed a new electric bicycle that is just as impressive as its LaFerrari-killing , million-dollar Concept One supercar, in its own way. With a massive 3kWh battery, the Greyp G12H can go up to 240 km (150 miles) on a single charge, making it the longest-range e-bicycle out there. If you have a 10 mile round trip to work, each would cost 2.3 cents, making it one of the cheapest powered transportation options, too. “Cheap” is strictly related to energy consumption, however. The Greyp G12S, the company’s current model that has a shorter 75 mile range but is faster at 70 km/h (44 mph) costs €8, 380, or around $9, 400. That’s Lionel Messi money (he bought a custom version), and the new model isn’t likely to be cheaper, as the battery is double the size. That said, other long-endurance models like those from Optibike are in that ballpark too. The G12H and faster G12S both look more like motocross bikes than electric bicycles, and Greyp markets the latter as such (see the video, above). Given the 107 pound weight of the G12S model, in fact, the pedals are mostly for show, and the G12H should weigh at least that much. Other features include “Supernova” lights, a custom rack, and biometric sensor to activate the e-bike. There’s no word yet on availability or cost, but Greyp says the price tag and range will depend on the battery option you choose.

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Rimac’s electric bike can go 150 miles on a single charge

Nano-sized ‘yolks’ should lead to longer-lasting batteries

Those eggs you might have had for breakfast? They’re not just food — they may be the key to longer-running batteries in your devices. Scientists at MIT and Tsinghua University have developed a nanoparticle battery electrode whose egg-like design is built to last. Their invention, which houses a shape-changing aluminum “yolk” in a titanium dioxide cell, can go through charging cycles without degrading like the graphite electrodes in conventional power packs. That could improve not only the overall longevity of the battery, but also its capacity and maximum power. You’d have gadgets that not only hold out for longer between charges, but don’t need to be replaced quite so often under heavy use. This is still a lab experiment, but it’s closer to practical reality than you think. The manufacturing technique is simple, and these materials are relatively easy to find. The yolks already hold up well under stress, for that matter. Even with super-fast charging (which typically shortens a battery’s lifespan), a test unit had just over half its capacity after 500 cycles. So long as the team does get its tech into a shipping product, you could see a wave of hardware that reduces many of your energy-related woes, such as range anxiety in electric cars or phone batteries that die before you’re ready to upgrade. [Image credit: Christine Daniloff/MIT] Filed under: Science Comments Source: MIT News Tags: aluminum, battery, biomimicry, lithium-ion, lithiumion, mit, nanoparticles, science, TsinghuaUniversity

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Nano-sized ‘yolks’ should lead to longer-lasting batteries

Man with colorblindness becomes overwhelmed when he tries on special glasses

A young man with colorblindness received a pair of EnChroma colorblind-correcting sunglasses as a gift from a friend, and when he tries them on, he is overcome with emotion at seeing certain colors for the first time. RELATED: Color for the Colorblind

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Man with colorblindness becomes overwhelmed when he tries on special glasses

Make a Tiny 9V Battery Power Switch From Parts of an Old 9V Battery

When you’re building your own custom electronics projects, a simple power switch isn’t always easy to find. If you have some DIY projects that use 9V batteries , this super small power switch is fairly easy to build and is mostly made from an old 9V battery. Read more…

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Make a Tiny 9V Battery Power Switch From Parts of an Old 9V Battery

How Open Browser Tabs Affect Your Battery Life

We’re all pretty aware that we probably shouldn’t be running a million tabs at once just for the sake of our own sanity, but it’s also a wear on your system resources. Wired decided to take a look to see if that also has an effect on your laptop’s battery life. Read more…        

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How Open Browser Tabs Affect Your Battery Life