Ian Clifford, founder and CEO of Zenn Motor Company, shown with an electric car.
An Austin-based startup called EEStor promised "technologies for replacement of electrochemical batteries," meaning a motorist could plug in a car for five minutes and drive 500 miles roundtrip between Dallas and Houston without gasoline.
By contrast, some plug-in hybrids on the horizon would require motorists to charge their cars in a wall outlet overnight and promise only 50 miles of gasoline-free commute. And the popular hybrids on the road today still depend heavily on fossil fuels.
"It's a paradigm shift," said Ian Clifford, chief executive of Toronto-based ZENN Motor Co., which has licensed EEStor's invention. "The Achilles' heel to the electric car industry has been energy storage. By all rights, this would make internal combustion engines unnecessary."
Clifford's company bought rights to EEStor's technology in August 2005 and expects EEStor to start shipping the battery replacement later this year for use in ZENN Motor's short-range, low-speed vehicles.
The technology also could help invigorate the renewable-energy sector by providing efficient, lightning-fast storage for solar power, or, on a small scale, a flash-charge for cell phones and laptops.
Skeptics, though, fear the claims stretch the bounds of existing technology to the point of alchemy.
"We've been trying to make this type of thing for 20 years and no one has been able to do it," said Robert Hebner, director of the University of Texas Center for Electromechanics. "Depending on who you believe, they're at or beyond the limit of what is possible."
EEStor's secret ingredient is a material sandwiched between thousands of wafer-thin metal sheets, like a series of foil-and-paper gum wrappers stacked on top of each other. Charged particles stick to the metal sheets and move quickly across EEStor's proprietary material.
The result is an ultracapacitor, a battery-like device that stores and releases energy quickly.
Batteries rely on chemical reactions to store energy but can take hours to charge and release energy. The simplest capacitors found in computers and radios hold less energy but can charge or discharge instantly. Ultracapacitors take the best of both, stacking capacitors to increase capacity while maintaining the speed of simple capacitors.
Hebner said vehicles require bursts of energy to accelerate, a task better suited for capacitors than batteries.
"The idea of getting rid of the batteries and putting in capacitors is to get more power back and get it back faster," Hebner said.
But he said nothing close to EEStor's claim exists today.
For years, EEStor has tried to fly beneath the radar in the competitive industry for alternative energy, content with a phone-book listing and a handful of cryptic press releases.
Yet the speculation and skepticism have continued, fueled by the company's original assertion of making batteries obsolete -- a claim that still resonates loudly for a company that rarely speaks, including declining an interview with The Associated Press.
The deal with ZENN Motor and a $3 million investment by the venture capital group Kleiner Perkins Caufield & Byers, which made big-payoff early bets on companies like Google Inc. and Amazon.com Inc., hint that EEStor may be on the edge of a breakthrough technology, a "game changer" as Clifford put it.
ZENN Motor's public reports show that it so far has invested $3.8 million in and has promised another $1.2 million if the ultracapacitor company meets a third-party testing standard and then delivers a product.
Clifford said his company consulted experts and did a "tremendous amount of due diligence" on EEStor's innovation.
EEStor's founders have a track record. Richard D. Weir and Carl Nelson worked on disk-storage technology at IBM Corp. in the 1990s before forming EEStor in 2001. The two have acquired dozens of patents over two decades.
Neil Dikeman of Jane Capital Partners, an investor in clean technologies, said the nearly $7 million investment in EEStor pales compared with other energy storage endeavors, where investment has averaged $50 million to $100 million.
Yet curiosity is unusually high, Dikeman said, thanks to the investment by a prominent venture capital group and EEStor's secretive nature.
"The EEStor claims are around a process that would be quite revolutionary if they can make it work," Dikeman said.
Previous attempts to improve ultracapacitors have focused on improving the metal sheets by increasing the surface area where charges can attach.
EEStor is instead creating better nonconductive material for use between the metal sheets, using a chemical compound called barium titanate. The question is whether the company can mass-produce it.
ZENN Motor pays EEStor for passing milestones in the production process, and chemical researchers say the strength and functionality of this material is the only thing standing between EEStor and the holy grail of energy-storage technology.
Joseph Perry and the other researchers he oversees at Georgia Tech have used the same material to double the amount of energy a capacitor can hold. Perry says EEstor seems to be claiming an improvement of more than 400-fold, yet increasing a capacitor's retention ability often results in decreased strength of the materials.
"They're not saying a lot about how they're making these things," Perry said. "With these materials (described in the patent), that is a challenging process to carry out in a defect-free fashion."
Perry is not alone in his doubts. An ultracapacitor industry leader, Maxwell Technologies Inc., has kept a wary eye on EEStor's claims and offers a laundry list of things that could go wrong.
Among other things, the ultracapacitors described in EEStor's patent operate at extremely high voltage, 10 times greater than those Maxwell manufactures, and won't work with regular wall outlets, said Maxwell spokesman Mike Sund. He said capacitors could crack while bouncing down the road, or slowly discharge after a dayslong stint in the airport parking lot, leaving the driver stranded.
Until EEStor produces a final product, Perry said he joins energy professionals and enthusiasts alike in waiting to see if the company can own up to its six-word promise and banish the battery to recycling bins around the world.
"I am skeptical but I'd be very happy to be proved wrong," Perry said. E-mail to a friend
Copyright 2007 The Associated Press. All rights reserved.This material may not be published, broadcast, rewritten, or redistributed.
All About Electric Vehicles
Yazarın xeon işlemcisi hakkında fikirleri
Bazılarımız xeon uzay oyununu oynamıştır. Korkarım o gün geliyor
ve mikroişlemcilerin ışık üreteci olarak çalışabilecekleri güne
çağa yaklaşıyoruz. Optik bilgisayarların şimdiden üretildiği düşünülürse
belkide birgün milyon yıl uzaktan cihazları kullanabileceğiz ve savaş
gemilerimizin akıllı laser yada photon silahları olacak.
A New Entry From A.M.D. in Chip Wars
By LAURIE J. FLYNN
Published: September 10, 2007
Advanced Micro Devices is counting on a new high-performance computer chip to hold on to hard-fought market share it has won from its principal rival, Intel.
The company, based in Sunnyvale, Calif., is set today to release the next generation in its Opteron line of processors for computer servers. The new chip puts four processors on one piece of silicon, a technology known as quad-core, allowing for faster calculating and greater energy efficiency, features sought by companies running large data centers and server farms.
Mario Rivas, executive vice president for computing products at A.M.D., said the latest Opteron chip is the company’s most significant new product in several years.
For Advanced Micro, the stakes are high, with the new chip arriving just as it struggles to maintain its hard-earned gains from Intel, its far larger rival. A.M.D.’s product introduction comes less than a week after Intel tried to upstage it with a server update of its own: new Xeon server processors that bundle together two chips that each have the circuitry of two processing engines.
In July, A.M.D. reported a $600 million loss for the second quarter, its third loss in a row, as it grappled with the renewed competition from Intel and falling chip prices. But it also said that shipments of microprocessors rose 38 percent from the first quarter, and that it had begun to win back market share after several quarters of slipping.
Intel and A.M.D. have been locked in a race to deliver high-performing chips for several years. A.M.D. was first to market with a dual-core chip more than two years ago as Intel struggled to get its dual-core strategy off the ground.
When A.M.D. introduced the Opteron server chip in 2003, the industry was slow to warm to the product, but the company says that this time will be different. Four years ago, Intel’s server processors were favored by nearly all major hardware suppliers. But delays at Intel induced Dell, I.B.M., Hewlett-Packard and Sun Microsystems to gradually turn to the Opteron as an alternative.
A.M.D. gained market share, particularly in the desktop and server markets, though Intel managed to keep a tight grip on fast-growing notebook PCs.
In recent quarters, Intel has responded with a succession of processors, and has managed to win back some of the share it lost. Intel is now leading in the market for servers, analysts say.
Analysts expect the new Opteron to take off more quickly this time because the major hardware companies are already A.M.D. customers. “This chip will have a much faster impact on A.M.D.’s business,” said Nathan Brookwood of Insight64, a chip industry consulting firm, “but a lot will be riding on just how good it is.”