Ultracapacitor
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Tesla's latest acquisition means better batteries for its future cars
EV owners know what it's like to live with range anxiety, but Tesla's latest investment might make those travel concerns easier to live with. Earlier today, the company confirmed its plans to purchase San Diego-based Maxwell Technologies in a $218 million deal that should see the electric car maker produce more efficient, longer-lasting batteries for its vehicles.
Genius DX-ECO wireless mouse has no battery, charges in three minutes anyway
Hip on recharging your wireless rodent every single day? How about if it only takes three minutes? A single day's juice per charge might be unacceptable for most peripherals, but we're ready to make an exception for Genius' DX-ECO wireless mouse. This adjustable 800 / 1600 DPI clicker swaps out a recharge battery for a "gold," or electric double-layer capacitor -- you may know it as a super, or ultracapacitor. A step towards a battery-free existence not enough for you? Fine, bask in the knowledge that the DX-ECO also features a carpet, marble and sofa friendly "BlueEye" sensor. Read on for the official PR. Us? We're off to fantasize about battery free electric vehicles.
Dipping capacitors and batteries in nanotubes could improve capacity
Stanford researchers figured out that, by dipping electrodes for super capacitors in a solution of carbon nanotubes or a conductive polymer they could increase the charging capacity by up to 45-percent. The team started working with composite electrodes of graphene and manganese oxide, since manganese is cheap and plentiful, but were hamstrung by its low conductivity. The thin coating of more conductive material greatly boosted the capacitance of the electrodes, and thus their ability to hold a charge. Further tests are still required to find the actual energy density of the dipped electrodes, but lead researchers Yi Cui and Zhenan Bao are already working on a way to apply the same technique to batteries.
Tesla CEO Musk says the days of batteries are numbered, ultracapacitors will power us into the future
The upcoming Tesla Model S has a big 'ol slab of batteries that make up the floor of the thing, shown above, but Tesla CEO Elon Musk says that sort of technology just won't do in the long run. He thinks that the days of the battery are numbered, and that it's the humble capacitor that will "supercede" traditional cells and let our future selves roam wild in our Teslas, largely free of range anxiety. Ultracapacitors are basically big, powerful versions of the capacitors that make all electronics work. Like a battery they hold a charge, but unlike a battery they can be juiced up almost instantaneously and suffer virtually no degradation through cycle after cycle. The big problem now is energy density, where batteries still have their capacitive competition beat, but hopefully that'll change soon -- maybe in time for another of Musk's predictions to come true.
Inhabitat's Week in Green: sexy green cars, glass strong as steel, and Tianjin's Eco-City revealed
Each week our friends at Inhabitat recap the week's most interesting green developments and clean tech news for us -- it's the Week in Green. This week Inhabitat brought you unveilings of the world's hottest new eco vehicles as we hit the floor of the Detroit Auto Show and rounded up the seven sexiest green cars on display. We also took a first look at Toyota's new Tesla-infused RAV4, and we caught up with Venturi's powerhouse electric concept car. And if unconventional transportation spins your wheels, don't miss the shape shifting Uno 3 electric scooter and this masterfully-crafted Tron segway that could out-geek a lightcycle. We also looked at several groundbreaking building systems that stand to make our cities stronger and more sustainable, starting with a new type of flexible superglass that is stronger than steel. Meanwhile, Sweden is soaking up body heat from public places to help heat buildings, China unveiled plans for a futuristic eco city, and several offices in Minnesota flipped on a set of souped-up ceiling lights capable of broadcasting wireless internet. In other news, the world of renewable energy is jolting for joy as Southwest Wind Power unveiled the world's first fully smart grid-enabled windturbine. We also checked out a new ultracapacitor that can charge a power drill in 60 seconds, and researchers are working on energy-generating fabrics that can transform your t-shirt into a power plant. Finally, this week we wrapped up our CES coverage with a look at the best green gadgets from this year's show, and we flexed our creative capacity with 5 tech projects for kids that foster creativity and critical thinking.
Graphene electrodes promise 5x energy storage boost for ultracapacitors
Graphene. We hear of your achievements so often, but feel your benefits in our everyday lives so infrequently. We'd be remiss if we didn't point out how unhealthy of a relationship this is, but hopefully Bor Jang and co. have a mind to mend it all. Bor, along with a number of colleagues at Nanotek Instruments, have just uncovered a graphene advancement that could put conventional Li-ion cells in a world of hurt. Of course, we've been hearing about so-called "battery breakthroughs" for the better part of our lives, but few have involved progress with ultracapacitors. For those unaware, ultracapacitors are energy storage devices that can "absorb and release charge in minutes," and they're pegged as cheaper / safer alternatives to batteries for electric vehicles. The only problem? Mainstream versions today hold just five percent of the energy held by Li-ion batteries. Nanotek's crew has figured out that the use of graphene electrodes "could lead to ultracapacitors with more than five times the energy density of commercial devices," but as these things always go, no one's coming close to producing a hard release date. We'll just assume it's undergoing lab tests for now, and in 2022 we can all weep at what could've been. Prove us wrong, whiz kids.
The "eco-chic" Fisker Karma and 150mpg XH-150 hybrids revealed
Hybrids are the rage at this year's Detroit Auto Show. Center stage then is the $100,000 $80,000 Fisker Automotive plug-in hybrid set for delivery in 2009. California-based Fisker is the namesake of Danish-born Henrik Fisker, CEO and former BMW and Aston Martin designer. The Fisker Karma (pictured), can go up to 50 miles before the gas engine kicks in to charge the lithium-ion batteries. It features a 150mph top speed capable of reaching 60mph from a standstill in 5.8 seconds. Sharing the stage with Fisker is AFS Trinity Power Corporation and their 150mpg plug-in hybrid XH-150 SUV -- that "XH" stands for Extreme Hybrid. Unlike traditional hybrids, the XH-150's powertrain uses ultra-capacitors, not gas, for "fast" acceleration. The XH-150 goes from 0 to 60 in 6.9 seconds with a top highway speed of just 87mph. Instead of bringing the XH-150 to market, however, AFS Trinity is more focused on licensing their ultra-capacitor technology. Good idea too, after checking the ho-hum XH-150 just beyond the break. [Via c|net News] Read -- Fisker Karma Read -- AFT Trinity unveils 150 MG XH SUV
EEStor unveils ultracapacitor-based battery system, Li-ion shudders in fear
If relying on sunlight and downhill routes in Venturi's uber-green Eclectic doesn't exactly sound feasible for your everyday (and night) errands, and your ultraportable's five hours of battery life just isn't where you think it should be, EEStor is hoping to remedy those issues -- along with basically every other battery-related quandary -- in one fell swoop. In another case of "this just can't be for realz," an elusive Texas company is coming clean about what's been happening in its labs of late, and the proclamations are nothing short of sensational. The firm boldly states that its one of a kind system, a "battery-ultracapacitor hybrid based on barium-titanate powders, will dramatically outperform the best lithium-ion batteries on the market in terms of energy density, price, charge time, and safety." Moreover, this miracle-working solution is said to produce "ten times" the power of lead-acid batteries at half the cost, sans the need for "toxic materials or chemicals." Additionally, EEStor is hoping to have its Electrical Energy Storage Unit (EESU) powering the wheels of Toronto-based ZENN Motor vehicles, and if "estimates" are to be believed, it will only take about $9 worth of electricity for an EESU-propelled car to travel 500 miles, compared to nearly $60 in gasoline. Of course, such a "breakthrough" product is bound to have its fair share of naysayers, and Jim Miller, vice president of advanced transportation technologies at Maxwell Technologies, is indeed skeptical that EEStor's technology will be able to withstand the unique pressures that a vehicle would place on the "brittle" structure. But we've got to give credit to the company's vow to veer clear of hype, as it notes that this is just the first time it has come forward to intro the technology, and maintains that it will "meet all of its claims" -- guess we'll see about that, eh?[Via The Raw Feed]
