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MIT researchers propose subsea version of pumped hydro for renewable energy storage

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Researchers at MIT are proposing using a variation on pumped hydroelectric systems for storage of electricity produced by offshore wind farms. The key to this Ocean Renewable Energy Storage (ORES) system is the placement of 30-meter-diameter hollow concrete spheres on the seafloor under the wind turbines. Earlier post.).

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National University of Singapore researchers devise membrane-based supercapacitors; possible new route to high-performance supercapacitive energy storage

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Unlike more conventional supercapacitor electrode materials with large surface areas and high porosities, the new hydrophilized polymer network uses ion-conducting channels for fast ion transport and charge storage. When sandwiched between and charged by two metal plates, the membrane can store charge at 0.2 —Xie et al.

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MIT team synthesizes all carbon nanofiber electrodes for high-energy rechargeable Li-air batteries

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Gravimetric Ragone plot comparing energy and power characteristics of CNF electrodes based on the pristine and discharged electrode weight with that of LiCoO 2. A team at MIT, led by Carl V. They report on their study in a paper published in the RSC journal Energy & Environmental Science. Energy Environ.

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Energy researchers: clean US hydrogen economy is within reach, but needs a game plan

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Addressing climate change requires not only a clean electrical grid, but also a clean fuel to reduce emissions from industrial heat, long-haul heavy transportation, and long-duration energy storage. Hydrogen and its derivatives could be that fuel, argues a commentary by four energy researchers in the journal Joule.

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New Lithium rechargeable semi-solid flow cell offers energy densities an order of magnitude greater than previous flow batteries; possible applications in transportation and grid-scale storage

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Yet-Ming Chiang will give a talk on “Scaling Lithium Ion (or other) Chemistries Using a Flow Battery Architecture” at the upcoming 4 th Symposium on Energy Storage: Beyond Li-ion , to be held at Pacific Northwest National Laboratory, 7-–9 June 2011. 2011), Semi-Solid Lithium Rechargeable Flow Battery.

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24M emerges from stealth mode with new semi-solid Li-ion cell; <$100/kWh by 2020

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Co-founded by MIT’s Dr. Yet-Ming Chiang, 24M’s Chief Scientist, the company is leveraging existing, preferred energy storage chemistry but using a new cell design with semi-solid (a mixture of solid and liquid phases) thick electrodes and manufacturing innovations to deliver what it says will be up to a 50% reduction in current Li-ion costs.

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False Starts: The Story of Vehicle-to-Grid Power

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Electricity is a commodity that is bought and sold, and yet unlike most other commodities, it cannot easily be stored. The need for large-scale electrochemical energy storage as a grid-stabilizing source of demand disappeared. Once electricity is generated and passes into the grid, it is typically used almost immediately.

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