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The secret lies in the metal-organic frameworks.

Raise your hand if you know what a metal-organic framework is. We didn't.

Maxwell Technologies reports that it has more than doubled its ultracapacitor production capacity over the past year and is moving forward with its plans to increase output of its Boostcap line of ultracapacitors. To date, Maxwell has pumped out more than 15 million ultracaps, says David Schramm, the firm's president and chief executive officer, adding that "ultracapacitor sales having grown by more than 50 percent in each of the past two years and our expectation for continuing rapid growth goi

While speaking at the Cleantech Forum in San Francisco, CA last week, Elon Musk, chief executive officer of Tesla, said he's willing to bet against batteries to be the technology that finally delivers the breakthrough that electric-drive vehicles need to become mainstream. Earth2Tech quotes Musk saying:

ADA Technologies, Inc. has been awarded a $70,000 contract from the U.S. Army to begin Phase 1 of the development of an electrochemical ultracapacitor for use in hybrid military vehicles. ADA's developmental work will be performed with assistance from Maxwell Technologies, the company behind the commercially-available line of Boostcap ultracapacitors.

Hybrid electric photovoltaic bike – Click above to watch video after the jump

Continental AG has teamed up with Maxwell Technologies to make their booster module more convenient and efficient. Called an E-booster, the new module is part of PSA Peugeot Citroën's mild-hybrid system, called e-HDI. Maxwell technologies is supplying their Boostcap ultracapacitors to Continental AG for the new module. Ultracapacitors have an ideal characteristic – power density – needed in a mild-hybrid system. With the new E-booster, a diesel engine can be restarted in 400 mil

In the realm of vehicle electrification, EEStor and its super-duper ultra-capacitors are roughly the equivalent of Duke Nukem Forever for video game players. The creators of both products have made impressive claims and repeatedly promised public demonstrations and introductions for many years. In both cases, the creators have missed every single promised date with nothing to show for it.

Vapor vs. vapor? That could be the case as super-secretive EEStor could potentially face competition in the ultra-capacitor space from Recapping. We've never heard of Recapping before, but the startup is backed by Khosla Ventures and recently received a $1 million grant from the U.S. Department of Energy.

BMW hydrogen hybrid 1 Series prototype – Click above for high-res image gallery

According to reports from Reuters and GM-Volt.com, Zenn Motors has canceled plans to launch its cityZENN high-speed electric car and will slow down work on its low-speed EVs. According to Zenn Chief Executive Ian Clifford, the company will focus its efforts on becoming a supplier of ZENNergy Drive electric vehicle drivetrain components, which we assume will center around the EEStor energy storage system. Why the change in plans?

EEStor, the company behind the ultralight, ultra-efficient – and ultra secret – EEStor Electrical Energy Storage Units (EESU) that could change the electric car world, still isn't giving out much information about their product. But Ian Clifford, the CEO of Zenn Motors, is talking.

Following EEStor's permittivity announcement on Earth Day last week, I wrote a post that ended with a call for our readers to determine if the stated "relative permittivity of 22,500" was a big deal or not. There were some educated responses (thank you), but one refrain that kept appearing was that everyone is waiting for a real and physical demonstration of the company's supposedly amazing ultracapacitor. "Until then," some of you wrote, "stfu EEStor."

Delays, hype, and more delays. This is the short history of EEStor, the company that keeps on talking about what is supposed to be an ultracapacitor that reinvents electric drive vehicle energy storage. Whatever is really going on, EEStor did put out a press release for Earth Day that keeps beating the hype drum. The announcement isn't about the ultracaps directly, but about EEStor's Composition Modified Barium-Titanate powders, which have apparently been verified by a third party to meet or exc

Ah, fire. One of humanity's oldest ways to generate energy. Technically, you could generate energy by burning brake pads, as seen in the picture above (thanks, Flickr!), but automotive engineers have managed to come up with a way to use brakes to generate energy without going up in flames. The technology is called regenerative braking and it's the subject of this week's Greenlings.

RATP, the public-owned company that manages most of Paris' public transport system, is currently performing tests using a hybrid bus outfitted with ultracapacitors. For now, the test buses are passenger-free. The model, called Lion's City Hybrid, is supplied by German manufacturer MAN and the company claims it reduces fuel consumption about 20 to 25 percent. RATP is testing the bus in four different bus lines, which represent four different types of bus lines configurations, from suburban medium

Stop the presses! We've finally got some real information regarding EEStor's highly secretive capacitor-based energy storage system, though it's not exactly coming from the company itself. It seems that EEStor recently filed for patents of its new technology, which centers around a core of aluminum coated barium titanate powder immersed in a polyethylene terephthalate plastic matrix, and they've now been granted those patents. The best part for those of us who've been following the company's dev

OK, as we just posted, we know that Nissan is getting involved in large EV projects in Europe, Israel and Japan. Minoru Shinohara (pictured above with the Pivo 2 concept), senior vice president of the technology development department at Nissan said during the CEATEC Exhibition in Japan that Nissan is exploring wireless recharging. For some people (that'd be me!), the hassle of plugging in their car might be a real challenge or just an easy thing to forget. Seeking Alpha gives hints that Nissan

Let's see? Boostcap, Boostcap, Boostcap. Where have we heard this before? Ah, yes. Back in November 2006 we first heard about Maxwell Technologies' 125 volt ultracapacitor and we later learned about the heavy duty version (390 volts) for hybrid buses and how the ultracaps might go into Chinese vehicles and be used in Milan. But, if you haven't been following this news, you can get your fill of BOOSTCAP ultracap news at the American Public Transportation Association EXPO (AKA "public transportati

Kia is reportedly considering the use of ultra-capacitors to store electrical energy in the next generation version of its fuel cell vehicle. Ultra caps have an advantage over batteries in that they can absorb and release energy much more quickly. Unfortunately, they don't have as much capacity and are currently much more expensive. There is a lot of work being done on capacitors and EEStor has made claims of tremendous progress. So far, though, EEStor has not publicly demonstrated any prototype

About a year ago, Maxwell Technologies told the world about the Chinese government using its ultracapacitors in various official vehicles. Another July brings another announcement, and so we learn that the city of Milan, Italy will soon be using Maxwell's ultracap modules in its hybrid and electric buses. The 125-volt BOOSTCAP ultracapacitor modules will store energy from the bus' brakes and then spit it back out for torque assist when the driver steps on the accelerator. Overhead electric line

Like Indiana Jones and some sort of Ark or Tomb or Crystal Skull, today's automotive engineers are always looking for better ways to capture, store and release electrical energy for future hybrids and EVs. Green Car Congress says that GM is "actively exploring" at combining supercapacitors with li-ion batteries for the next generation of E-Flex vehicles (read: don't expect in the 2010 Volt). Speaking at the Advanced Automotive Battery Conference (AABC) this week in Tampa, Forida, GM's Mark Verbr

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