Power/Performance Bits: May 15


Aluminum battery materials Scientists from ETH Zurich and Empa identified two new materials that could boost the development of aluminum batteries, a potential low cost, materially abundant option for temporary storage of renewable energy. The first is a corrosion-resistant material for the conductive parts of the battery; the second is a novel material for the battery's positive pole that ... » read more

Power/Performance Bits: May 8


Cobalt-free cathodes Researchers at the University of California, Berkeley, built lithium-ion battery cathodes without cobalt that can store 50% more energy than traditional cobalt-containing cathodes. Currently, lithium-ion battery cathodes use layered structures, which cobalt is necessary to maintain. When lithium ions move from the cathode to anode during charging, a lot of space is left... » read more

Power/Performance Bits: April 17


Flexible LCDs Researchers at Donghua University and Hong Kong University of Science and Technology developed a flexible, optically rewriteable LCD for paperlike displays. The team estimates it will be cheap to produce, perhaps only costing $5 for a 5-inch screen. Optically rewriteable LCDs, like conventional LCDs, are structured like a sandwich, with a liquid crystal filling between two ... » read more

Power/Performance Bits: Apr. 10


Lithium-air battery Researchers at the University of Illinois at Chicago and Argonne National Laboratory designed a new lithium-air battery that works in a natural air environment and still functioned after 750 charge/discharge cycles, a record for this battery type. In theory, lithium-air batteries work by combining lithium present in the anode with oxygen from the air to produce lithium p... » read more

Power/Performance Bits: March 27


Equalizing batteries Engineers at the University of Toledo propose a bilevel equalizer technology to improve the life span of batteries by combining the high performance of an active equalizer with the low cost of a passive equalizer. "Whenever we are talking about batteries, we are talking about cells connected in a series. Over time, the battery is not balanced and limited by the weakest ... » read more

Power/Performance Bits: Mar. 20


Proton battery prototype A team at RMIT University built a prototype rechargeable proton battery combining hydrogen fuel cells and battery-based electrical power that has the potential, with further development, to store more energy than currently-available lithium ion batteries. The working prototype proton battery uses an activated carbon electrode for solid-state storage of hydrogen with... » read more

Power/Performance Bits: Mar. 6


Neural network chip Neural networks are both slow and consume a lot of power. This made researchers at MIT examine the important aspects of the nodes within a neural network and to see how each part of the computation could be improved. The outcome was a dedicated chip that increases the speed of neural-network computations by three to seven times over its predecessors, while reducing power c... » read more

Power/Performance Bits: Feb. 13


Silicon spintronics Engineers at the University of California, Riverside, developed new methods to detect signals from spintronic components made of low-cost metals and silicon. Spintronic devices generate little heat, use relatively minuscule amounts of electricity, and would require no energy to maintain data in memory. However, previously developed spintronic devices depend on complex struc... » read more

Power/Performance Bits: Feb. 6


Recycling cathodes Nanoengineers at the University of California San Diego developed an energy-efficient recycling process that restores used cathodes from spent lithium ion batteries. The process involves harvesting the degraded cathode particles from a used battery and then boiling and heat treating them. In new batteries built with the cathodes, charge storage capacity, charging time and ba... » read more

Power/Performance Bits: Jan. 30


Wavy display architecture Researchers at KAUST developed a new transistor architecture for flexible ultrahigh resolution devices aimed at boosting the performance of the display circuitry. Flat-panel displays use thin-film transistors, acting as switches, to control the electric current that activates individual pixels consisting of LEDs or liquid crystals. A higher field-effect mobility of... » read more

← Older posts Newer posts →