Experimental supercap reaches 73Wh/kg and 16kW/kg to challenge NiMH and Pb-acid batteries

Combing graphene with a metal-organic framework can produce a highly-porous and conductive electrode for supercapacitors, according to the Technical University Munich (TUM), which has built a device to prove it, that can challenge some battery technologies for specific energy capacity. “The new energy storage device does not only attain an energy density of up to 73Wh/kg, ...

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When robots spontaneously organise

US engineers and physicists have identified conditions where independent robots will spontaneously act collaboratively – much as flocks of starlings form shapes in the air. It does not cover every situation nor every type of independently-acting entity, but posits that entities with sufficiently messy dynamics will spontaneously find ‘low rattling’ states. “Rattling is when matter ...

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Train runs on sewage

Trains run on gas made from human and animal waste and discarded food are being developed by Ultra Light Rail Partners of Worcester. The company has had two grants from Innovate UK totalling £410,000. The objective is the 66ft long ‘BioUltra’ railcar able to carry up to 120 passengers at a top speed of 50 ...

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Alternative to cobalt-based cathodes in li-ion batteries

Oak Ridge National Laboratory researchers have developed a potential replacement for cobalt-based cathodes in li-ion batteries called NFA (nickel-, iron- and aluminum) – a derivative of lithium nickelate. “Lithium nickelate has long been researched as the material of choice for making cathodes, but it suffers from intrinsic structural and electrochemical instabilities,” says ORNL’s Ilias Belharouak, “in ...

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Lockheed Martin buys Aerojet Rocketdyne for extra propulsion

Lockheed Martin is buying Aerojet Rocketdyne Holdings, the aerospace and defence rocket engine manufacturer, in a transaction valued at $4.4 billion. The proposed acquisition will add “substantial expertise” in propulsion to Lockheed Martin’s portfolio, says the company, with the deal expected to be completed in the second half of 2021, subject to regulatory approvals and ...

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LDDI market tightening; prices rising

The market for large display driver ICs (LDDIs) has tightened, says TrendForce, as foundries shifted their 8 inch capacity to other products. This transformed a 3.3% supply surplus in 2019 to a 1.7%  surplus in 2020 and resulted in 20-30% q-o-q price increases in H2. As well as foundry price increases, assembly capacity has been insufficient ...

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