Does anyone still pay attention to these guys?
ZENN CEO Ian Clifford resigns, Brian Cott assumes position Autoblog Green
ZENN CEO Ian Clifford resigns, Brian Cott assumes position Autoblog Green
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Does anyone still pay attention to these guys?
TheEEstory.com keeps churning out articles now and then...
TheEEStory.com: ZMC Lobbyist Says Senator Carl Levin Supportive of Zenn (a year ago anyway)
EEStor will have a functioning prototype within the next two -three months, if not sooner.
They've been showing "preliminary" results for about 5 years now...
...
Status and delays
Several delays in production have occurred and there has not been a public demonstration of the uniquely high energy density claims of the inventors.[SUP][6][/SUP] This has led to the speculation that the claims are false. In January 2007 EEStor stated in a press release "EEStor, Inc. remains on track to begin shipping production 15 kilowatt-hour Electrical Energy Storage Units (EESU) to ZENN Motor Company in 2007 for use in their electric vehicles."[SUP][7][/SUP] In September 2007, EEStor co-founder Richard Weir told CNET production would begin in the middle of 2008.[SUP][8][/SUP] In August 2008, it was reported he stated "as soon as possible in 2009".[SUP][9][/SUP] ZENN Motor Company (ZMC) denied there was a delay, just a clarification of the schedule, separating "development" and "commercialization".[SUP][10][/SUP] In March 2008 Zenn stated in a quarterly report a "late 2009" launch was scheduled for an EEStor-enabled EV.[SUP][11][/SUP] In December 2009 Zenn announced that production of the lead acid based ZENN LSV would end April 30, 2010. At that time Zenn did not announce a date for production of an EEstor based car.[SUP][12][/SUP]
In April 2009 EEStor announced third-party certification of permittivity. The press release did not mention the voltage at which it was tested, so EEStor's uniquely high energy density claims remain to be demonstrated.[SUP][13][/SUP][SUP][14][/SUP]
In July 2009 ZENN Motor Company, as a result of the April 2009 permittivity tests, invested an additional $5 million in EEStor, increasing its share of ownership to 10.7%.[SUP][15][/SUP] A Zenn press release indicates they were able to get a 10.7% stake because other EEStor investors did not increase their stake.[SUP][16][/SUP]
In January 2013 EEStor released a press release that included test results of four samples of dielectric layers tested by System Engineering and Laboratories ("SEAL"). One sample showed a permittivity of 162,291 and an energy density (dielectric layer only) of 73.90 (W.h/L). This sample was tested at 1500 volts.[SUP][17][/SUP]
Skepticism from experts
EEStor's claims for the EESU exceed by orders of magnitude the energy storage capacity of any capacitor currently sold. Many in the industry have expressed skepticism about the claims. Jim Miller, vice president of advanced transportation technologies at Maxwell Technologies and capacitor expert, stated he was skeptical because of current leakage typically seen at high voltages and because there should be microfractures from temperature changes. He stated "I'm surprised that Kleiner has put money into it."[SUP][18]
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That's the same piece David posted previously.