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Hawaii study finds vehicle-to-grid discharge detrimental to EV batteries

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Results of a study by a team at the Hawaii Natural Energy Institute, SOEST, University of Hawaii at Manoa, suggest that the additional cycling to discharge vehicle batteries to the power grid in a vehicle-to-grid (V2G) scenario, even at constant power, is detrimental to EV battery cell performance. —Dubarry et al.

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US Hybrid awarded contract to deliver plug-in fuel cell shuttle bus to Hawaii County Mass Transit Agency

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California-based US Hybrid Corporation has been awarded a contract by the Hawaii Center for Advanced Transportation Technologies (HCATT) for the design, integration and delivery of its H 2 Ride Fuel Cell Plug-In Shuttle Bus for operation by the County of Hawaii Mass Transit Agency’s (MTA) HELE-ON Big Island bus service. Earlier post.).

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Better Place, Sheraton Waikiki and Hawaiian Electric Partner on EV Charge Network in Hawaii

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Better Place has started its initial deployment of EV infrastructure in Hawaii, with the launch of a project to incorporate its electric-vehicle infrastructure in Honolulu, in partnership with Kyo-ya Hotels & Resorts’ Sheraton Waikiki Resort and Hawaiian Electric Company. Kyo-ya will operate two of the electric vehicles.

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Researchers Demonstrate Autonomous Underwater Vehicle With Novel Thermal Recharging Engine

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NASA, US Navy and university researchers have successfully demonstrated the first robotic underwater vehicle to be powered entirely by ocean thermal energy. This expansion/contraction produces a high pressure oil that can be collected and periodically released to drive a hydraulic motor for electricity generation and battery recharging.

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US and Japan collaborating on smart grid project in Hawaii; EV operation and charging, including grid-balancing services

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The project is supported by Japan’s New Energy and Industrial Technology Development Organization (NEDO), in cooperation with the State of Hawaii, Hawaiian Electric Company, Inc.,

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Sandia Labs and HHC partner to design metal hydride hydrogen storage system for forklifts

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Adrian Narvaez of Hawaii Hydrogen Carriers (HHC) observes a metal hydride storage tank, part of a project led by Sandia National Laboratories. Plus, they no longer have to purchase battery rechargers or dedicate space for recharging. —Adrian Narvaez, Hawaii Hydrogen Carriers (HHC).

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USC team uses mixed conduction membranes to suppress polysulfide shuttle in Li-S batteries

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We can now focus our efforts on improving other parts of lithium-sulfur battery discharge and recharge that hurt the overall life cycle of the battery. The study was funded by the University of Southern California and the Loker Hydrocarbon Research Institute. —Sri Narayan. Credit: Sri Narayan and Derek Moy. Click to enlarge.