The higher the energy density of your battery, the further your EV can travel. But the standard lithium-ion batteries used in EVs are reaching their theoretical upper limit for energy density. A new design is needed to break through that ceiling and make it commercially viable. Mark Shwartz at Stanford University describes their research into lithium-metal batteries, which should double the energy per unit weight. One big challenge was to create … [Read more...]
IEA: Without accelerating clean energy innovations we cannot hit net zero by 2050
The impressive rise of renewables and energy efficiency, alone, will not be sufficient to meet the world’s 2050 emissions goal, says the IEA in its flagship Clean Energy Innovation report. New technologies, taken all the way through to widespread adoption by the market, must become an essential part of the net zero pathway. The stark warning is that existing policies to decarbonise shipping, trucks, aviation and heavy industry are not nearly … [Read more...]
Dutch-Spanish startup navigates coronavirus fallout while also guiding utilities into the digital age
In late summer 2015 at a research university in Belgium, an Italian graduate student new to campus attended a welcome event hosted by engineering department faculty. Sampling beer brewed by an electrical engineering student association, Simone Accornero mingled with a dozen other new classmates in his program at KU Leuven. Accornero began chatting with an engineering master’s student who had just arrived from Poland. “We hit it off,” Accornero … [Read more...]
Optimising Cyanobacteria for carbon fixation and biofuels
The landscape can be changed for energy transition technologies by research breakthroughs, and that includes work on bacteria and proteins. The National Renewable Energy Laboratory (NREL) and its partners have been running experiments on cyanobacteria. These single-cell organisms, also using photosynthesis, fix carbon dioxide twice as efficiently as plants. They grow rapidly, doubling their numbers in three hours. The first step is to understand … [Read more...]
Nuclear: can Silicon Carbide fuel rod cladding improve safety, performance?
Public concern about the safety of nuclear plants is driving research into ways to make the fuel rods more able to survive the kind of unexpected calamity experienced in Fukushima in 2011. Following the tsunami, hydrogen explosions were caused by the conventional zirconium-based fuel cladding interacting with the high temperature steam produced when the safety system failed and coolant water heated up. Writing for MIT, Leda Zimmerman describes … [Read more...]
EU Recovery Package mustn’t sideline Green R&D
Today (Wednesday 27 May) the EC releases its COVID-19 Recovery package and Multiannual Financial Framework. The Green Deal and net-zero ambitions are expected to be a substantial part of it. Eleonora Moro and Léa Pilsner at E3G draw attention to Research & Innovation (R&I, or R&D), often in danger of being seen as a luxury in times of crisis because the big wins are not immediate. Already, the EU could do much better. Looking at … [Read more...]
Wireless recharging of EVs as they drive?
Engineers have demonstrated a practical way to use magnetism to transmit electricity wirelessly to recharge electric cars. Stationary wireless EV charging has already been piloted and promoted by companies like Connected Kerb in the UK and car manufacturers. Experiments with the mobile version have also been conducted. Clearly, the less often an EV has to stop to recharge the better. But this has run into the problems of energy conversion … [Read more...]
Recyclable Wind Turbine Blades: thermoplastic, next-generation
When wind turbine blades are decommissioned they are usually scrapped and thrown into landfill because they cannot be recycled. In the U.S. over the next four years alone that will be the fate of more than 8,000 blades. As wind installations increase so will that number. It's because most blades are constructed from epoxy or other thermoset resins. So National Renewable Energy Laboratory (NREL) researchers are using a thermoplastic resin, … [Read more...]
Floating Offshore Wind Turbines: utility scale by 2024?
Floating wind turbines can access deeper waters that the usual fixed offshore ones. There the wind speeds are greater and more consistent. It opens the door to even greater efficiency and cost reductions. America’s National Renewable Energy Laboratory (NREL) has summarised a webinar by their Offshore Wind Research Platform Lead, Walt Musial. Other main take-aways include: floating platforms have long been engineered and proven by the oil and gas … [Read more...]
Green Ammonia can replace fossil fuel storage at scale
What’s the best way to store energy, from industry scale to electric vehicles, replacing the widespread use of fossil fuels? Pure hydrogen is an energy dense alternative, but the gas takes up a lot of space. Liquid ammonia doesn’t, yet it contains the hydrogen and therefore the energy. Ian Wilkinson at Siemens explains the advantages of using ammonia, NH3. Already the world produces 180m tonnes a year, worth €80bn. It’s mainly for agricultural … [Read more...]
Beyond pilots: scaling up energy innovation in cities
Our current electricity grid was built hundreds of years ago, when power generation was centralised and our energy needs were far simpler. Electricity was distributed from large stable power plants to the consumers through a unidirectional flow that was easily predictable and did not require complex control. But over the last decades, cities have been going through a substantial change, seeing an exponential increase of their energy needs which … [Read more...]
From Buildings to Solar Thermal: using electric charge to vary insulating properties tenfold
The insulating properties of a material don’t normally vary. Applying an electric charge to a material can vary its electronic and magnetic qualities, but not its thermal conductivity, normally. David Chandler at MIT says now a team of researchers there have found a way to do it. Their “electrical heat valve” can increase the thermal conductivity of thin-film strontium cobalt oxide (SCO) on demand by running a charge through it after adding … [Read more...]
HVAC: New window “film” cuts cooling load by 30%. No need for re-fits
Buildings represent one third of energy usage in the U.S., and that will be typical of similar economies around the world. The cost of re-fitting buildings to conserve energy is very high and can take decades. Specifically, 30% of the energy used to heat and cool buildings is down to the heat that either escapes or enters through windows. What if there was a way to control that heat flow without re-designing or replacing the windows? MIT’s Mary … [Read more...]
Lithium-Sulphur batteries: cheaper, greener, hold more energy
The rapid expansion of electric power across the world is putting a strain on battery production. The standard lithium-ion battery depends on minerals and metals in limited supply, so alternatives are needed urgently. Mahdokht Shaibani at Monash University describes the work of her team on developing lithium-sulphur batteries. There are many advantages, not least the abundance of sulphur, the 16th most common element on Earth. Added to that, … [Read more...]
High-efficiency “spacecraft” solar cells are coming down in price
Solar cells commonly used in spacecraft are highly efficient but too expensive to be used commercially down here on Earth. Two methods, HVPE (hydride vapour phase epitaxy) and the preferred MOVPE (metalorganic chemical vapour phase epitaxy), have been used to make these super-cells, reaching efficiencies of 29.1%. The National Renewable Energy Laboratory (NREL) says its scientists have discovered a method, D-HVPE, that should achieve those … [Read more...]
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