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Graphene hybrid made from metal organic frameworks (MOF) and graphenic acid make an excellent positive electrode for supercapacitors, which thus achieve an energy density similar to that of nickel-metal hydride batteries. Credit: Prof. Dr. J. Kolleboyina / IITJ ==================================================================== A team working with Roland Fischer, Professor of Inorganic and Metal-Organic Chemistry at the Technical University Munich (TUM) has developed a highly efficient supercapacitor. The basis of the energy storage device is a novel, powerful and also sustainable graphene hybrid material that has comparable performance data to currently utilized batteries. Usually, energy storage is associated with batteries and accumulators that provide...

Schematic depiction of the asymmetric supercapacitor with the porous COF as the negative electrode shown on the left. Credit: KAUST, Osama Shekhah ========================================================================= Carefully designed covalent organic frameworks could make supercapacitor electrodes that have a greater ability to store electric charge. A porous organic material created at KAUST could significantly improve energy storage and delivery by supercapacitors, which are devices that are able to deliver quick and powerful bursts of energy. Supercapacitors use technology that is significantly different from the reversible chemical reactions used in rechargeable batteries. They store electrical energy by building up a separation of positive and electric...

Former Aston Martin designer to challenge Tesla with claims of dramatic breakthrough Henrik Fisker at CES in Las Vegas, says the solid-state batteries have the potential to be much cheaper to make than lithium-ion batteries. ____________________________________________________________________________________________________________________________________ In an announcement designed, surely, to take some of the wind from Tesla’s sails, Henrik Fisker is claiming to have made a dramatic breakthrough in battery technology. Fisker, who left a job as chief of design at Aston Martin to set up his own eponymous car company, says that he’s filed patents on a new design of so-called “solid state” batteries, which can theoretically...

M ost supercapacitors—electrical components that store energy—are made from aluminum, graphene or various polymers. But the materials list for the new ones being developed at Arizona State University (ASU) could be mistaken for a grocery receipt: cheddar cheese, eggs, gelatin, Gatorade. Researchers at ASU are using these ingredients to create edible supercapacitors. Foods like cheese and egg white, when placed in the right combinations, can conduct and store electricity. The resulting devices, once swallowed, could one day power medical devices in the stomach or intestinal tract. “We use food to function like electronics,” says Hanqing Jiang, a professor of mechanical...

Fabrication schematic of ordered mesoporous fewlayer carbon (OMFLC). Credit: Science (2015). DOI: 10.1126/science.aab3798 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ (Phys.org) - A team of researchers working in China has found a way to dramatically improve the energy storage capacity of supercapacitors - by doping carbon tubes with nitrogen. In their paper published in the journal Science, the team describes their process and how well the newly developed supercapacitors worked, and their goal of one day helping supercapacitors compete with batteries. Like a battery, a capacitor is able to hold a charge, unlike a battery, however, it is able to be charged and discharged very quickly...

Rice University scientists are making small, flexible microsupercapacitors in a room-temperature process they claim shows promise for manufacturing in bulk. The technique is based on their method to burn patterns of spongy graphene into plastic sheets with a commercial laser. Credit: Tour Group/Rice University ====================================================================================================================================== Rice University researchers who pioneered the development of laser-induced graphene have configured their discovery into flexible, solid-state microsupercapacitors that rival the best available for energy storage and delivery. The devices developed in the lab of Rice chemist James Tour are geared toward electronics and apparel. They are the subject of a new paper in the...

Ohm is a 6-pound drop-in replacement for your car battery. What's not to like about what it claims to deliver. It never needs jump-starting. Works on the coldest days (in temperatures as low as -40C). Lasts more than twice than lead-acid batteries, which go for three years. Here, you are looking at a 7-year average lifetime. No lead, no acid. When Ohm says it is a drop-in replacement they mean that it is installed in the same way. The site says to "remove the positive and negative leads from your old battery, drop in Ohm, and reattach the lead to...

By dipping small pieces of an ordinary kitchen sponge into solutions of nanoscale electrode materials, scientists have created a light-weight, low-cost supercapacitor that benefits from the sponge's porous structure. The pores provide a large surface area for the electrode materials to attach to, leading to an increase in ion movement between the electrodes and the electrolyte that fills in the pores. Overall, the new supercapacitor exhibits a performance that is superior to that of one made of the same electrode materials but without the sponge. The researchers, led by Jun Ma at the University of South Australia, have published their...

The dramatic rise of smartphones, tablets, laptops and other personal and portable electronics has brought battery technology to the forefront of electronics research. Even as devices have improved by leaps and bounds, the slow pace of battery development has held back technological progress. Now, researchers at UCLA's California NanoSystems Institute have successfully combined two nanomaterials to create a new energy storage medium that combines the best qualities of batteries and supercapacitors. Supercapacitors are electrochemical components that can charge in seconds rather than hours and can be used for 1 million recharge cycles. Unlike batteries, however, they do not store enough...

(Reuters) - Scientists in South Korea say they have found a way of converting used cigarette butts into a material capable of storing energy that could help power everything from mobile phones to electric cars. In a study published on Tuesday in the journal Nanotechnology, researchers from Seoul National University outlined how they transformed the used filters, which are composed mainly of cellulose acetate fibers and are considered toxic and a risk to the environment when discarded. "Our study has shown that used cigarette filters can be transformed into a high-performing carbon-based material using a simple one-step process, which simultaneously...

PORTLAND, Ore. — Say goodbye to your phone battery and charger. A new structural material could transform a mobile device's entire case into a hybrid super-capacitor/battery, making traditional batteries obsolete. Researchers from Vanderbilt University's Nanomaterials and Energy Devices Laboratory are now designing materials that combine the best aspects of super-capacitors and batteries into a single hybrid material suitable for making such device cases. While the material's energy density is currently less than that of a lithium-ion battery, it makes up for density by the much bigger volume of a case -- plus it eliminates the space needed for a battery....

Using porous silicon coated with graphene, material scientists at Vanderbilt University have developed the first supercapacitor that is made out of silicon. Solar cells that produce electricity 24/7, not just when the sun is shining. Mobile phones with built-in power cells that recharge in seconds and work for weeks between charges. These are just two of the possibilities raised by a novel supercapacitor design invented by material scientists at Vanderbilt University that is described in a paper published in the October 22 issue of the journal Scientific Reports. It is the first supercapacitor that is made out of silicon so...

Called the supercapacitor, this revolutionary device can charge cell phones within 20 seconds. The brainchild of 18-year-old Esha Khare of Saratoga, California, the lucky teen collected $50,000 at the Intel International Science and Engineering Fair in Phoenix, Arizona this week.LOS ANGELES, CA (Catholic online) - The device is sure to make waiting around for your cell phone to recharge a thing of the past, In addition, the gizmo packs more energy into a smaller space than traditional phone batteries -- and holds the charge longer. Khare traveled from her California home to Phoenix last week for the Intel International Science...

The battery, which has powered our lives for generations, may soon be consigned to the dustbin of history. British scientists say they have created a plastic that can store and release electricity, revolutionising the way we use phones, drive cars - and even wear clothes. It means the cases of mobiles and iPods could soon double up as their power source - leading to gadgets as thin as credit cards.