Non-toxic solvent removes barrier to commercialisation of perovskite solar cells
October 5, 2016 12:15 PM - University of Oxford
Scientists at Oxford University have developed a solvent system with reduced toxicity that can be used in the manufacture of perovskite solar cells, clearing one of the barriers to the commercialisation of a technology that promises to revolutionise the solar industry.
Perovskites – a family of materials with the crystal structure of calcium titanate – have been described as a 'wonder material' and shown to be almost as efficient as silicon in harnessing solar energy, as well as being significantly cheaper to produce.
The Psychology Behind Climate Change Denial
October 5, 2016 06:53 AM - Uppsala University
Climate change is a serious threat to humans, animals, and the earth’s ecosystems. Nevertheless, effective climate action has been delayed, partly because some still deny that there is a problem. In a new thesis in psychology, Kirsti Jylhä at Uppsala University has studied the psychology behind climate change denial. The results show that individuals who accept hierarchical power structures tend to a larger extent deny the problem.
In the scientific community there is a strong consensus that humans have significantly affected the climate and that we are facing serious challenges. But there is a lot of misinformation about climate change in circulation, which to a large part is created and distributed by organised campaigns with the aim of postponing measures that could combat climate change. And there are people who are more prone than others to trust this misinformation.
Previous research has consistently shown that it is more common among politically conservative individuals to deny climate change. In her thesis, Kirsti Jylhä has investigated this further and in more detail. Her studies included ideological and personality variables which correlate with political ideology, and tested if those variables also correlate with climate change denial.
Could California's gridlock generate electricity for the grid?
September 27, 2016 02:05 PM - Yale Environment 360
California is testing whether its heavy traffic can produce not just emissions and air pollution, but electricity. The state’s Energy Commission says it will spend $2 million to examine the potential of using piezoelectric crystals embedded under asphalt as a way to send the energy created by moving cars to the grid.
Stronger turbine blades with molybdenum silicides
September 23, 2016 04:24 PM - National Institute for Materials Science via ScienceDaily
Researchers at Kyoto University have found that molybdenum silicides can improve the efficiency of turbine blades in ultrahigh-temperature combustion systems.
Gas turbines are the engines that generate electricity in power plants. The operating temperatures of their combustion systems can exceed 1600 °C. The nickel-based turbine blades used in these systems melt at temperatures 200 °C lower and thus require air-cooling to function. Turbine blades made out of materials with higher melting temperatures would require less fuel consumption and lead to lower CO2 emissions.
Inexpensive semiconducting organic polymers can harvest sunlight to split carbon dioxide into alcohol fuels
September 23, 2016 09:33 AM - University of Texas, Arlington via ScienceDaily
Chemists at The University of Texas at Arlington have been the first to demonstrate that an organic semiconductor polymer called polyaniline is a promising photocathode material for the conversion of carbon dioxide into alcohol fuels without the need for a co-catalyst.
"This opens up a new field of research into new applications for inexpensive, readily available organic semiconducting polymers within solar fuel cells," said principal researcher Krishnan Rajeshwar, UTA distinguished professor of chemistry and biochemistry and co-Director of UTA's Center for Renewable Energy, Science & Technology.
Why the Increase in Solar-Powered Schools?
June 24, 2016 05:02 PM - Jake DiRe, Triple Pundit
Out of the 125,000 K-12 schools in the United States, over 3,700 are running on solar power. Three-thousands of these schools installed their solar power systems within the past six years, as solar technology continues to become less expensive and more sophisticated.
This trend in powering our schools reflects the growing recognition by district and state officials that photovoltaic electrical systems offer significant financial and environmental benefits. Here are four key reasons why more schools are making this transition.
New generation of high-efficiency solar thermal absorbers developed
June 15, 2016 10:51 AM - University of Bristol Via EurekAlert!
Researchers from the Universities of Bristol and Exeter are one step closer to developing a new generation of low-cost, high-efficiency solar cells. The structure is one of the world's first examples of a tri-layer metasurface absorber using a carbon interlayer.
Gas Stations Close as Fire Rages Near Alberta Oil Sands
June 14, 2016 10:34 AM - Jan Lee , Triple Pundit
The wildfire that roared through Fort McMurray, Alberta, Canada, last May has been called the worst fire in Canadian history. Its devastation is staggering: More than 100,000 residents and nearby workers were evacuated at different stages of the fire, and more than 2,200 square miles of land and 2,400 structures burned in two provinces: Alberta and its eastern neighbor, Saskatchewan. With the fire only 70 percent contained to date, its economic impact is yet to be tallied.
US-India Pact on Renewables Will Help Keep Coal in the Ground
June 13, 2016 11:47 AM - RP SIEGEL, Triple Pundit
President Barack Obama and Indian President Narendra Modi signed a pact last week, extending a commitment originally established in 2014, to join forces to combat climate change with a huge commitment to renewable energy.
The pledge acknowledges commitments made in Paris last year at the COP21 climate talks and defines a path for both countries to achieve their nationally determined contributions (NDCs). In particular, the U.S. has pledged to support India, the world’s third largest carbon emitting country and second fastest growing economy, in its ambitious goal of deploying 175 gigawatts of renewable energy by 2022. That would bring it up to a level of renewable capacity comparable to the U.S. today.
New material has potential to cut costs and make nuclear fuel recycling cleaner
June 13, 2016 11:00 AM - Mary Beckman via PNNL
Researchers are investigating a new material that might help in nuclear fuel recycling and waste reduction by capturing certain gases released during reprocessing. Conventional technologies to remove these radioactive gases operate at extremely low, energy-intensive temperatures. By working at ambient temperature, the new material has the potential to save energy, make reprocessing cleaner and less expensive. The reclaimed materials can also be reused commercially.