Articles tagged with Renewable Energy
Scientists have found a way to produce high-performance magnets without rare earth elements, using the 'cosmic magnet' tetrataenite. The discovery could reduce reliance on China's dominant rare earth supply, supporting low-carbon technologies.
Researchers analyzed three intervention strategies to mitigate mercury use and emissions in artisanal gold mining, finding that while some methods reduce emissions, others create new environmental problems. The study suggests a need for more comprehensive approaches to address the complex issues surrounding mercury use.
The Covid-19 pandemic and European conflict have exposed the vulnerability of the global energy system, with reduced investments in clean energy projects and increased fossil fuel reliance. This is likely to create lock-in effects that could take decades to reverse, making a sustainable energy transition increasingly challenging.
Nagoya University scientists developed a controller with a sleep mode to procure energy only when needed, reducing the need for storage batteries and capacitors. This innovative solution enables efficient energy saving and promotes the practical application of power packet type energy Internet.
Researchers in China designed a strategy to improve zinc-air battery performance by combining two transition metals, atomic iron and nickel, which deliver high electrocatalytic activity. The resulting rechargeable batteries achieve high peak power density, working rates, and long lifespan.
The NTU-developed wind harvester generates a voltage of three volts at wind speeds as low as two meters per second, powering commercial sensor devices. The device can also store excess charge for extended periods in the absence of wind, serving as an alternative to smaller lithium-ion batteries.
The UBC Okanagan team has created a novel, passive-de-icing coating that integrates an ice-detecting microwave sensor. This technology enables automatic melting of ice without external energy input, reducing wear-and-tear and energy waste.
A University of Houston professor has developed a nonreciprocal solar energy harvesting system that surpasses the thermodynamic limit and clears the way to use solar power 24/7. The new system can achieve significant efficiency boosts, paving the way for practical applications in power plants.
New research models the value of clean hydrogen in decarbonizing heavy industries and transportation in China. A widespread application of clean hydrogen in HTA sectors can save $1.72 trillion in investment costs and avoid a 0.13% loss in aggregate GDP.
A Danish study reveals that nearly half of the population is unaware of woody biomass as an energy source, highlighting a need for public engagement on its sustainability. The study also shows strong public concerns over biodiversity and climate change, emphasizing the importance of adapting policies to minimize environmental costs.
Researchers have devised a method to determine the impact of climate change on local renewable energy supply and variability. The study found that increased weather unpredictability can lead to blackouts if backup power sources are not in place.
Researchers found that shadows on single cells or parallel-connected cells result in similar output current decrease ratios to sunlight. However, series-connected cells experience excess power loss and temperature rise, leading to further degradation.
Researchers at PNNL and UW discover a flow-based method to isolate pure magnesium salt from seawater, skipping energy-intensive purification steps. This approach could revolutionize US domestic magnesium production and enable more efficient processing of seawater.
Researchers at Rice University have created stable and efficient halide perovskite solar cells by finding the right solvent design to apply a 2D top layer on top of a 3D bottom layer. The new method achieves high power conversion efficiencies, comparable to commercially available solar cells, while maintaining stability.
A new field study reveals a previously unobserved fluid dynamic process that affects the ocean's deep-sea mining operations. Researchers equipped a pre-prototype collector vehicle with instruments to monitor its sediment plume disturbances, finding that the plumes remained relatively low and spread under their own weight.
The ANEMEL project aims to develop efficient electrolysers for green hydrogen production, targeting low-grade water sources. The €3 million EU funding will expedite prototype design and catalyse commercialisation of the technology.
A new passive cooling system developed at MIT combines radiative, evaporative, and thermal insulation to provide up to 19 degrees Fahrenheit of cooling from ambient temperature. This technology has the potential to significantly reduce energy consumption and extend food storage in off-grid locations.
A new study suggests that transitioning to a decarbonized energy system by 2050 can save the world at least $12 trillion compared to continued fossil fuel use. The study shows that rapidly transitioning to clean energy results in lower energy system costs, provides more energy to the global economy, and expands energy access.
A study by University of Cambridge and University of California, Berkeley finds that competition with China drove significant increases in clean energy investment between 2000 and 2018. The share of RD&D funding for clean technologies grew from 46% to 63%, while fossil fuel funding remained relatively unchanged.
Researchers at University of Cincinnati found that emphasizing cost savings over global warming increases support for renewable energy sources. The study tested four messaging approaches and found durable bipartisan effects in favor of cost savings.
Scientists have developed a new solar-powered laser with improved conversion efficiency, enabling more stable and efficient space-based energy generation. The design features four mirrors and laser rods, allowing for precise control over the pump cavity and minimizing thermal stress effects.
Scientists at Linköping University have made a breakthrough in developing stable high-efficiency perovskite solar cells. They created an ion-modulated radical doping method for Spiro-OMeTAD, which eliminates the trade-off between efficiency and stability.
Researchers have demonstrated that hydrogen condenses on a surface at low temperatures, forming a super-dense monolayer with a volume of just 5 liters per kilogram H2. This breakthrough could enable more efficient cryogenic hydrogen storage systems for the coming hydrogen economy.
Scientists create zinc battery with chitosan-based biodegradable electrolyte, reducing environmental burden. The new battery stores power from large-scale wind and solar sources, uses abundant zinc, and can be broken down by microbes, making it a viable option for sustainable energy storage.
Researchers at the University of Oldenburg and Fraunhofer IWES collaborate on a new project to develop more accurate wind flow simulations using artificial intelligence. The goal is to reduce computing times and enhance precision, ultimately accelerating innovation in wind turbine design.
Researchers at MIT have developed a new kind of battery using abundant and inexpensive materials, offering a potential solution for large-scale backup power systems. The battery's molten salt electrolyte has been shown to prevent dendrite shorting, a common reliability issue in lithium-ion batteries.
Researchers at the University of Cambridge have developed ultra-thin, flexible devices that can convert sunlight into fuels as efficiently as plant leaves. The devices, inspired by photosynthesis, could be used on polluted waterways, in ports or even at sea to reduce reliance on fossil fuels.
Scientists at the University of Chicago discover a method to increase lithium selectivity in olivine iron phosphate using electrochemical intercalation. Seeding electrodes with lithium ions can repel unwanted elements, improving the efficiency of lithium extraction from dilute water resources.
New research reveals that fossil fuel companies' decarbonisation scenarios are incompatible with Paris Agreement goals, with most projecting high levels of warming and exceeding the 1.5°C limit. The study provides a critical assessment of scenarios published by public, commercial, and academic institutions.
A new method to improve solid-state hydrogen fuel cell charging times has been developed by researchers from the University of Technology Sydney. The study used a semi-cylindrical coil heat exchanger, which significantly improved heat transfer performance and reduced charging time by 59%. This innovation has the potential to revolution...
Researchers at MIT develop a new flow model that optimizes individual turbine control to maximize wind farm energy production. The algorithm increases energy output by up to 32% in real-world experiments, with potential gains of over $1 billion per year.
Engineers developed an algorithm to optimize individual turbine angles, reducing wake impact and increasing overall farm efficiency. This could lead to a significant improvement in existing wind farms' energy output and enable more turbines to be installed in tighter spaces.
Researchers at UC Santa Barbara analyzed Southern Africa's resources and power grid to develop an energy portfolio that meets the region's 2040 energy requirements. The model suggests that wind and solar are the most cost-effective options, with potential to freeze greenhouse gas emissions at 2020 levels.
Researchers from Tokyo University of Science create a metal–organic framework-based magnesium ion conductor showing superionic conductivity at room temperature, overcoming the limitations of magnesium ion-based energy devices. The novel Mg2+ electrolyte exhibits a high conductivity of 10−3 S cm−1, making it suitable for battery applica...
Argonne researchers develop a new way to calculate the environmental impact of ammonia production, evaluating two promising methods: carbon capture and water electrolysis. The study aims to reduce greenhouse gas emissions and fossil fuel use in fertilizer production.
Rensselaer researchers propose a sustainable alternative to lithium-ion batteries by using calcium ions. The new technology has shown promising results in terms of performance and cost efficiency.
Research from Aarhus University shows that EU's high gas prices are driving the green transition and making it easier to meet 1.5-degree climate target. The study suggests that cutting off Russian gas would force European countries to invest in renewable energy sources, such as solar and wind power.
A new energy plan developed by researchers at Kyushu University suggests a more sustainable future energy system that includes 61% renewable-based electricity. The plan, which prioritizes solar and wind power, exceeds current projections by 50%, with significant reductions in coal-based generation and nuclear power.
The study found that increased oil prices can lead to a decrease in the development of green energy, as oil is required for deploying clean energy capacity or infrastructure. The demand for minerals used in renewable energy production will increase due to growing solar technology adoption.
A new study by Boston University School of Public Health found that decarbonization pathways need to incorporate more efficient electric heating technologies and renewable energy sources to minimize strain on the US electric grid. The researchers analyzed building energy data from March 2010 to February 2020 and found that winter heati...
University of Arizona researchers Erin Ratcliff and Roger Angel are working on scaling paper-thin solar technology using perovskites. They aim to develop a low-cost quality control method to detect defects during manufacturing, enabling the production of robust and high-quality perovskite-based photovoltaics.
Researchers from Tokyo Tech investigated nonthermal plasma-promoted CO2 hydrogenation on Pd2Ga/SiO2 catalysts, revealing a more than two-fold increase in CO2 conversion compared to thermal methods. The study provides mechanistic insights into the NTP-activated species and metallic catalyst interaction.
Scientists at KIT create a prototype for fully scalable all-perovskite tandem solar modules with an efficiency of up to 19.1 percent, enabling commercial viability through optimized light paths and established industrial coating methods.
Researchers at PNNL have developed a sodium-ion battery with greatly extended longevity in laboratory tests. The new electrolyte recipe stabilizes the protective film on the anode and generates an ultra-thin protective layer, providing long cycle life and stability. This technology has potential for applications in light-duty electric ...
Researchers at Michigan State University have created a chemical method to access renewable energy from plant matter, which could lessen our reliance on fossil fuels. The 'electrocatalytic' process enables electricity and water to break strong chemical bonds in biomass, potentially destroying environmental pollutants.
Researchers developed a simple and versatile nanoparticle ink made from tin oxide, which can be printed at relatively low temperatures using microwave technology. This ink enables the mass production of high-efficiency perovskite solar cells with power-conversion efficiencies of up to 18%.
Researchers at Chalmers University of Technology have developed a thermochemical recycling method that produces gas containing carbon atoms from mixed waste, which can be used to create new plastic products. The process eliminates the need for fossil raw materials and achieves negative emissions.
Researchers at Lawrence Berkeley National Laboratory have created a new type of fuel that has higher energy density than traditional heavy-duty fuels. The biofuel, called POP-FAMEs, is produced by bacteria fed with plant matter and can significantly reduce greenhouse gas emissions when burned.
The study reveals alternative strategies such as reducing virgin materials, reusing products, and extending product life spans to build sustainable product life cycles. Key challenges remain in developing PV and battery recycling methods, with current research focusing on lab-scale methods.
Researchers at Stanford University have designed an optical concentrator, AGILE, that can efficiently gather and concentrate light regardless of the angle and frequency. The device can capture over 90% of incoming light and create spots three times brighter than the incoming light.
King Abdullah University of Science & Technology (KAUST) researchers have created a new membrane material that separates nitrogen from methane based on their shape difference. This approach reduces purification costs for natural gas by up to 73% compared to existing methods, offering an energy-efficient solution.
A study by Ritsumeikan University researchers analyzed the life cycle assessment of nuclear power generation, revealing varying TMR coefficients across different mining methods and fuel cycles. The results show that nuclear power generates similar natural resources as renewable energy, significantly less than thermal power.
A new Imperial analysis found that biogas and biomethane supply chains release more than twice as much methane as previously estimated, with 62% of leaks concentrated in a few 'super-emitters'. The researchers call for better monitoring and fixing of leaks to ensure the continued use of these climate-friendly gases.
Researchers at Iowa State University are developing a physics-based system using artificial intelligence to improve the cybersecurity of energy delivery systems. The 'GridDeep' project aims to prevent, detect, and mitigate attacks on renewable sources sending power to the grid.
Harvard researchers develop new method to extend the lifetime of organic molecules in organic aqueous flow batteries, improving their commercial viability. The approach works by periodically providing a shock to revive decomposed molecules, resulting in a net lifetime increase of up to 260 times.
Researchers at Princeton University have developed a commercially viable perovskite solar cell that can last up to 30 years, outperforming industry standards. The device's durability and efficiency meet common standards, marking a significant milestone for renewable energy technology.
A study published in Nature Climate Change reveals that companies purchasing renewable energy certificates (RECs) are overstating their climate mitigation claims. The researchers found that firms reported a 31% reduction in emissions, but the actual drop was only 10%, three times lower.
Research by Duke University shows the US is still indirectly buying Russian crude through highly globalized supply chains. The analysis highlights three ways to mitigate exposure: Buy American, Made in America, and secure supply chains through renewable energy investments.
A KAUST-led team developed organic semiconductor-based photocatalysts to store solar energy as clean hydrogen fuel. These catalysts can absorb visible light and generate long-lived charges, improving efficiency for hydrogen evolution.
Scientists designed novel hard carbon anodes with controlled defects, pore structures, and cation doping to boost sodium storage capacity. The optimized materials showed improved rate capability, cycling stability, and energy density. Introducing potassium ions regulated the microstructure and surface functionality of the anodes.