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Energy Storage

Batteries, fuel cells, capacitors, etc

Energy Dense “Biobattery” Runs on Sugar

Written by , on March 18, 2014

A research team at Virginia Tech university, led by Professor Y.H. Percival Zhang, has developed a sugar-powered fuel cell that stores ten times as much energy as the equivalent-size lithium-ion battery. The new sugar-powered cell has an energy density an order of magnitude higher than previous “”biobatteries” – allowing it to run longer before needing to […]  Read more »

Storing Energy in Silicon Cells

Written by , on March 17, 2014

Researchers at Vanderbilt University in Nashville have devised a way to store electricity on a silicon-based supercapacitor that potentially would let mobile phones recharge in seconds and continue to operate for weeks without recharging. Whereas batteries store energy in chemical reactions, supercapacitors store electricity by assembling ions on the surface of a porous material. As […]  Read more »

Mega Flow Batteries Promise Cheap Large-scale Storage

Written by , on March 14, 2014

Flow batteries generate an electrical charge from the interaction of a liquid electrolyte flowing past either another liquid or a solid. The liquid electrolyte is stored in separate tanks until it is needed. Large flow batteries have the potential to be relatively cheap because you only need to add an extra tank to increase their […]  Read more »

Using Viruses to Make Better Batteries

Written by , on March 10, 2014

Lithium-air batteries hold the promise of drastically increasing power per battery weight. However, achieving this requires solving a number of challenges, including the need to develop better, more durable materials for the batteries' electrodes and improving the number of charging-discharging cycles the batteries can withstand. MIT researchers believe that a combination of genetic engineering and […]  Read more »

Lithium-Sulfur – The Next Generation of Batteries?

Written by , on March 7, 2014

The most widely accepted technology for batteries today is lithium-ion, which is practical for consumer electronics but not for anything much bigger. For large-scale energy storage from vehicles to solar panels, wind turbines or the electricity grid, lithium-ion is too expensive. Since their discovery in the 1960s, it has been believed that lithium-sulfur batteries, which […]  Read more »

Using Steam Engine Technology for Power Storage

Written by , on November 30, 2013

A group of Australian engineers has formed a company, Terrajule, to develop a novel energy storage solution. The Terrajoule system combines concentrated solar thermal energy, steam engines and an integrated storage system using an insulated pressure vessel. The concentrated solar thermal energy is used to produce steam. Since it is impractical to store steam for […]  Read more »

Tiny Electric Car Has Removable Battery

Written by , on September 30, 2013

One of the problems with electric cars is how to charge the battery if you have to park in the street or your destination doesn't have a a suitable charging point. The Itaian manufacturer Estrima has solved the problem in its tiny Birò electric car by making the batterey removable, so that it can be […]  Read more »

New Fuel Cells Could Cost 90% Less

Written by , on August 27, 2013

Redox Power Systems, a startup based in Fulton, Maryland, plans to bring to market a fuel cell that is about one-tenth the size and one-tenth the cost of currently commercial fuel cells by 2014. The company's first product will be a 25-kilowatt generator about the size of a dishwasher, that Redox says produces enough electricity […]  Read more »

New Flow Battery Could Give Cheaper Energy Storage

Written by , on August 22, 2013

Rresearchers at MIT have developed a new rechargeable flow battery that could enable cheaper, large-scale energy storage because it does not rely on expensive membranes to generate and store electricity. The prototype has a power density that is an order of magnitude higher than that of many lithium-ion batteries and generates three times as much […]  Read more »

Ammonia for Fuel and Energy Storage

Written by , on August 8, 2013

In November 1942, Belgium's public bus system was put out of action by the wartime shortage of diesel. Just four months later, the transport company's engineers had 100 buses running again using liquid ammonia as their fuel. Ammonia continued to be used as a fuel for about two years. Ammonia had been considered and abandoned […]  Read more »