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Power Storage

​Cheap, Efficient Organic Flow Battery Materials

The science of power storage has a new variety of options and viagra uk cheap purchase buy new materials to investigate thanks to india cheap viagra some recent developments in the chemistry of materials used in flow batteries. Until now, flow batteries have largely relied on generic cialis mastercard metallic compounds for the active chemicals they use. But new materials have been found that are cheaper and more effective than the buy viagra online chemicals which have been most used in flow batteries until now.

The research undertaken by scientists at Harvard University has identified a range of organic compounds known as quinones, which are have the potential to be especially useful for flow batteries. Initial research indicates they are inexpensive and efficient materials well suited for use in power storage. A recently published paper in the journal Nature discusses the use of 9,10-anthraquinone-2,7-disulphonic acid (AQDS), a compound found in rhubarb, in a flow battery.

Large-scale energy storage is an area where flow batteries can excel, because the equipment needed to build a large energy storage system is basic, industrial gear, rather than highly specialized equipment. To increase storage capacity, a flow battery just needs a couple of larger storage tanks.

The AQDS materials are naturally abundant and very stable. They are potentially safer than metal-based flow batteries because the materials are "less likely to react violently if they accidentally come in contact with each other." When used in a flow battery, they show very good cycle efficiency and "[represent] a new and promising direction for realizing massive electrical energy storage at greatly reduced cost." The chemicals needed to store a kilowatt-hour of budget cialis energy would cost $27, which is roughly one-third the cost of other systems.

via: Business Insider


Sulfur Makes Safer, More Efficient Batteries

Sulfur continues to offer promise in the energy storage realm. Low- cost lithium sulfur batteries were just a research topic a few years ago, and are now moving closer to practicality with new developments that could offer four times the energy storage of lithium-ion batteries.

Researchers at Oak Ridge National Laboratory have developed a technique that uses a solid electrolyte to produce a stable, low-cost, sulfur-based battery. "The new ionically-conductive cathode enabled the ORNL battery to levitra online india maintain a capacity of 1200 milliamp-hours (mAh) per gram after 300 charge-discharge cycles at 60 degrees Celsius. For comparison, a traditional lithium-ion battery cathode has an average capacity between 140-170 mAh/g. Because lithium-sulfur batteries deliver about half the buy no rx cialis voltage of lithium-ion versions, this eight-fold increase in capacity demonstrated in the ORNL battery cathode translates into four times the gravimetric energy density of lithium-ion technologies."

Sulfur is a plentiful element, and is usa cialis often a waste product of industrial processes, making it very cheap and readily available. Sulfur based batteries are also said to be less prone to instability and sales cialis accidental fire than present lithium ion batteries are in part because the electrolytes are solid rather than liquid.

Sulfur has been part of best canadian pharmacy large-scale sodium sulfur batteries for many years, but that technology requires high temperatures, and is best suited for industrial applications. The new developments offer the possibility of bringing sulfur-based batteries to consumer level applications.

image: sulphur and calcite CC BY-SA 3.0 by Didier Descouens/Wikimedia Commons

via: Treehugger (HT: Megan Treacy)


Open Pit Mine to Be Reused for Pumped Storage

An abandoned open-pit mine in Canada is being proposed to be made useful once more as a pumped storage facility. The Northland Power Marmora Pumped Storage facility offers the possibility of turning a blighted, destroyed piece of land into something with value for advancing renewable power systems.

The pumped storage would be "five times the height of Niagara Falls,"according to the Globe and Mail, though the fact that it would have far less volume than Niagara gets far less attention. Nevertheless, the proposed facility would have the capacity to viagra prescriptionsgeneric viagra sale provide up to 400 megawatts to the grid for up to 5 hours.

Because of their relatively low cost, pumped storage facilities can have the capacity to provide much more power than more technical power storage methods like batteries or flywheels. Pumped storage facilities have both a rated capacity (like the proposed facility's 400 MW), which determines the peak power they are able to deliver, as well as the cialis sale usa number of hours they are able to produce power at that level, which is determined by the size of the reservoir.

The location of viagra seizures the proposed facility is well situated in the midst of Ontario's heavily populated southeast, between Ottawa and Toronto, where there is high demand for power. Surplus power from both renewable and conventional sources can be used to pump water up into the upper reservoir during periods of low demand, and then that power can be used in place of costlier peaker power plants during periods of high demand.

Pumped storage is not for power production, but instead provides storage for power from other sources. It makes renewable power generation more effective by allowing surplus production to be stored for later use, rather than being lost at times when demand is low.

link: Northland Power (video)


Best of Both Worlds Power Storage from Graphene Supercapacitors

If UCLA researchers are correct, a new supercharger could transform both the way we power our electronics and recycle their old sources of energy. Bringing together the quick-charging qualities of a capacitor and the energy-holding capacities of a battery, graphene supercapacitors could replace the often toxic batteries we currently use to power our electronics.

Batteries and capacitors are relatively similar devices, functionally speaking. Standard batteries consist of two chemicals that react with each other, separated by a barrier, and have a circuit between them; capacitors are composed of two oppositely charged metal plates, separated by an insulator, with a circuit between them. When electrons flow through the circuits of batteries and capacitors alike they provide electricity. Although capacitors can be charged very quickly, they don’t hold nearly as much energy as batteries.

Graphene supercapacitors would solve the energy holding problem of capacitors. Graphene conducts electricity better than any other common substance, and the one-atom thick material has more going for it than capacity: it’s also thinner, lighter, and can be turned into cheaper energy-holding devices than batteries. Because it’s carbon-based, it’s also biodegradable. Considering the care we need to buy now online viagra take when disposing of batteries that are often made of toxic metals, how much would it rock to be able to compost our disposable charge holders instead?

Extremely flexible and stronger than steel, graphene has been notoriously difficult to work with, as the Focus Forward video describes. The researchers who won the Nobel Prize in Physics in 2010 for their work with graphene created the substance by carefully peeling graphite with scotch tape--not a method that’s easy or quick to replicate. However, researchers at UCLA claim they have found a better method to craft the substance in a delightfully MacGyver-like way: by using a consumer-grade DVD drive. After pouring graphite oxide onto CDs, popping the canadian rx viagra CDs into the drive and using the drive’s laser to beam light on the material, the graphite oxide deoxygenates and becomes graphene. Miles ahead of scotch tape, this DVD drive method produces the essentially two-dimensional material easily and quickly. Imagine what could be done with a machine designed to create sheets of graphene on a larger scale.

Graphene supercapacitors have immense potential to revolutionize the efficiency and environmental-friendliness of our electronics. Especially after listening to generic companies sale tramadol the researchers discuss graphene’s potential, it’s difficult not to be excited for the future of this technology. Graphene supercapacitors could charge electronic devices, but further research will determine just how much these supercapacitors can charge (are electric car charging stations really a possibility?), and if and when they'll be available for consumers. In any case, here’s hoping the technology can take off.

image: CC BY-SA 2.0 by CORE-Materials

via: Boing Boing


Battery Maker A123 Enters Bankruptcy

Further bad news for the electric vehicle market comes with word that A123, the company that owns the largest battery manufacturing plant in North America, has filed for Chapter 11 bankruptcy this week.

The two A123 manufacturing plants, which have been making batteries for electric vehicles including those built by General Motors and cost levitra low Fisker, will be taken over by Johnson Controls, which is acquiring A123's automotive assets.

In addition to its vehicle batteries, A123 also produces cells and batteries for portable equipment, telecommunications and electric grid applications, and stationary power backup systems.

An earlier deal to sell most of the ownership of A123 to a Chinese manufacturer, the Wanxiang Group, apparently fell through, and the bankruptcy filing coincided, at least in part, with A123 failing to make a scheduled loan repayment to Wanxiang.


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