3-D printing can now be used to print lithium-ion microbatteries the size of a grain of sand. The printed microbatteries could supply electricity to tiny devices in fields from medicine to communications, including many that have lingered on laboratory benches for lack of a battery small enough to fit the device, yet provide enough stored energy to power them.
Nanoscopic crystals of silicon assembled like skyscrapers on wafer-scale substrates are being intensely studied as a possible breakthrough in highly efficient battery technologies. A researcher at Northeastern University has been using computational to understand the atomic-scale interactions between the growth of nanowires and new development in this area of technology: alloyed metal droplets.
Researchers at Rice Univ. have come up with a new way to boost the efficiency of the ubiquitous lithium-ion battery by employing ribbons of graphene that start as carbon nanotubes. Proof-of-concept anodes built with graphene nanoribbons and tin oxide showed an initial capacity better than the theoretical capacity of tin oxide alone.
Researchers at Sandia National Laboratories have confirmed the particle-by-particle mechanism by which lithium ions move in and out of electrodes made of lithium iron phosphate (LFP), findings that could lead to better performance in lithium-ion batteries in electric vehicles, medical equipment and aircraft.
A new study by researchers at Univ. of California, Santa Barbara provides clues into the understanding of the behavior of the charged molecules or particles in ionic liquids. The new framework may lead to the creation of cleaner, more sustainable and nontoxic batteries, and other sources of chemical power.
Silicon can accept ten times more lithium than the graphite used in the electrodes in lithium-ion batteries, but silicon also expands, shortening electrode life. Looking for an alternative to pure silicon, scientists in Germany have now synthesized a novel framework structure consisting of boron and silicon, which could serve as electrode material.
New technologies, new materials, and more sophisticated modeling systems have made lithium-ion (Li-ion)-based systems the battery of choice for many designers looking to implement high-energy advanced electric power systems. For these systems, Li-ion systems have replaced nickel-metal hydride systems.
Scientists at Oak Ridge National Laboratory (ORNL) have designed and tested an all-solid lithium-sulfur battery with approximately four times the energy density of conventional lithium-ion technologies that power today's electronics. The ORNL battery design, which uses abundant low-cost elemental sulfur, also addresses flammability concerns experienced by other chemistries.
Lithium-ion batteries are lightweight, fully rechargeable and can pack a lot of energy into a small volume—making them attractive as power sources for hybrid and electric vehicles. However, there’s a significant downside: Overheating and collisions may cause the batteries to short-circuit and burst into flames. Engineers have worked to improve the safety of lithium-ion batteries and now there may be ways to make batteries more resilient.
Stanford Univ. scientists have dramatically improved the performance of lithium-ion batteries by creating novel electrodes made of silicon and conducting polymer hydrogel, a spongy material similar to that used in contact lenses and other household products. The scientists developed a new technique for producing low-cost, silicon-based batteries with potential applications for a wide range of electrical devices.
Research conducted with a large new battery unveiled in Oregon will help make the Northwest's and the nation's electric system smarter and more efficient, officials said at a ribbon-cutting ceremony. Portland General Electric's 5-MW, lithium-ion energy storage system was shared with the public Friday at the utility's Salem Smart Power Center in South Salem, Ore.
Stanford University scientists have developed an advanced zinc-air battery with higher catalytic activity and durability than similar batteries made with costly platinum and iridium catalysts. The results could lead to the development of a low-cost alternative to conventional lithium-ion batteries widely used today.
Frustration led to revelation when Rice University scientists determined how graphene might be made useful for high-capacity batteries. Calculations by the Rice laboratory of theoretical physicist Boris Yakobson found a graphene-boron anode should be able to hold a lot of lithium and perform at a proper voltage for use in lithium-ion batteries.
One of the most promising new kinds of battery to power electric cars is called a lithium-air battery. But progress has been slow. Researchers have used transmission electron microscope (TEM) imaging to observe, at a molecular level, what goes on during a reaction called oxygen evolution as lithium-air batteries charge; this reaction is thought to be a bottleneck limiting further improvements to these batteries.
Researchers have created a new tool to detect flaws in lithium-ion batteries as they are being manufactured, a step toward reducing defects and inconsistencies in the thickness of electrodes that affect battery life and reliability. The Purdue researchers have developed a system that uses a flashbulb-like heat source and a thermal camera to read how heat travels through the electrodes.
A group of Rice University mechanical engineering students are getting a charge out of having the coolest new shoes on campus. As their capstone project that is required for graduation, four seniors created a way to extract and store energy with every step. Their PediPower shoes turn motion into juice for portable electronics and, perhaps someday, for life-preserving medical devices.
Technology created an energy revolution over the past decade—just not the one we expected. By now, cars were supposed to be running on fuel made from plant waste or algae—or powered by hydrogen. Electricity would be generated with solar panels and wind turbines. Fossil fuels? They were going to be expensive and scarce. But in the race to conquer energy technology, Old Energy is winning.
Japan's transport minister says the government is poised to allow Japanese carriers to resume flying the Boeing 787 once they complete repairs to problematic lithium ion batteries. Transport Minister Akihiro Ohta says in a statement on the ministry's Website that the approval could come as early as Friday night following an expected official safety order from U.S. federal regulators.
Researchers from the U.S. Department of Energy’s (DOE) SLAC National Accelerator Laboratory and Stanford University have designed a low-cost, long-life battery that could enable solar and wind energy to become major suppliers to the electrical grid. The developers believe their new membrane-free battery, based on lithium and sulfur, may be the best yet designed to regulate alternative energies.
Nanotechnology typically describes any material, device, or technology where feature sizes are smaller than 100 nanometers in dimension. However, this new and uncharted direction in research provides a large spark for new product and drug delivery development. To achieve these discoveries, scientists must rely on specialized instruments and materials to drive their experiments and analysis.
As airlines prepare to begin flying Boeing's beleaguered 787 Dreamliners again, federal investigators are looking at how regulators and the company tested and approved the plane's cutting-edge battery system, and whether the government cedes too much authority to aircraft makers for safety testing.
Though they be but little, they are fierce. The most powerful batteries on the planet are only a few millimeters in size, yet they pack such a punch that a driver could use a cellphone powered by these batteries to jump-start a dead car battery—and then recharge the phone in the blink of an eye. Developed by researchers at the University of Illinois at Urbana-Champaign, the new microbatteries out-power even the best supercapacitors.
As an energy-storage material for batteries and capacitors, manganese dioxide has a lot going for it. However, chemical capacitors made with manganese dioxide have lacked the power of the typical carbon-based physical capacitor. A Michigan Technological University theorized that the situation could be improved if the manganese dioxide were made into nanorods, which are like nanotubes, only solid instead of hollow.
Once they've finished powering electric vehicles for hundreds of thousands of miles, it may not be the end of the road for automotive batteries. Five used Chevrolet Volt batteries are at the heart of Oak Ridge National Laboratory's effort to determine the feasibility of a community energy storage system that would put electricity onto the grid.
A new chemical process can transform waste sulfur into a lightweight plastic that may improve batteries for electric cars, reports a University of Arizona-led team. The new plastic has other potential uses, including optical uses. The team has successfully used the new plastic to make lithium-sulfur batteries.