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Archive for the ‘sustainability’ category: Page 9

Nov 12, 2024

News at KAIST

Posted by in categories: solar power, sustainability

Existing perovskite solar cells, which have the problem of not being able to utilize approximately 52% of total solar energy, have been developed by a Korean research team as an innovative technology that maximizes near-infrared light capture performance while greatly improving power conversion efficiency. This greatly increases the possibility of commercializing next-generation solar cells and is expected to contribute to important technological advancements in the global solar cell market.

The research team of Professor Jung-Yong Lee of the School of Electrical Engineering at KAIST (President Kwang-Hyung Lee) and Professor Woojae Kim of the Department of Chemistry at Yonsei University announced on October 31st that they have developed a high-efficiency and high-stability organic-inorganic hybrid solar cell production technology that maximizes near-infrared light capture beyond the existing visible light range.

The research team suggested and advanced a hybrid next-generation device structure with organic photo-semiconductors that complements perovskite materials limited to visible light absorption and expands the absorption range to near-infrared.

Nov 11, 2024

New ‘wastewater’ jet fuel could cut airplane emissions by 70%

Posted by in categories: sustainability, transportation

Scientists have discovered how to convert wastewater into biofuel to cut plane emissions by 70% — creating a new sustainable version of aviation fuel using biomass and agricultural waste.

Nov 10, 2024

Bioinspired hydrogels harness sunlight: A step closer to artificial photosynthesis

Posted by in categories: chemistry, solar power, sustainability

Mimicking how plants convert sunlight into energy has long been a dream for scientists aiming to create renewable energy solutions. Artificial photosynthesis is a process that seeks to replicate nature’s method, using sunlight to drive chemical reactions that generate clean energy. However, creating synthetic systems that work as organically as natural photosynthesis has been a significant challenge until now.

Nov 10, 2024

Can the mealworm be the answer to Africa’s plastic waste problem?

Posted by in categories: chemistry, food, sustainability

In a paper published in Scientific Reports journal, the researchers report the potential of the lesser mealworm (the larvae of a darkling beetle species, known scientifically as Alphitobius), to consume plastic.


The icipe researchers tested the ability of the lesser mealworm to consume polystyrene, one of the major microplastics that is fast accumulating both in land and water bodies. Polystyrene waste comes from the commercial application of its most common form, styrofoam. This material is used in food storage containers, packaging of equipment, disposable plates and cups, and insulation in construction. Various methods, including chemical, thermal and mechanical, are used to recycle polystyrene. However, these approaches are expensive and they also produce toxic compounds that are harmful to human, environment and biodiversity.

“Our study showed that the mealworms can ingest close to 50% of the styrofoam. We aim to conduct further studies to understand the process through which mealworms consume polystyrene, and whether they gain any nutritional benefits from the material,” says Evalyne Ndotono, an icipe PhD scholar.

Continue reading “Can the mealworm be the answer to Africa’s plastic waste problem?” »

Nov 9, 2024

Scientists make solar breakthrough that could majorly impact future of energy: ‘A critical step’

Posted by in categories: solar power, sustainability

“The first involved integrating the hole-selective materials and the perovskite layers, to simplify the manufacturing process. The second involved replacing traditional organic materials, such as fullerene and bathocuproine, with tin oxide, an inorganic electron transport layer, in a process known as the atomic layer deposition method,” per PV’s description.

Labspeak aside, the big takeaway is that the changes resulted in a 25% efficiency, meaning the cells can turn a quarter of the sunlight hitting them into energy. What’s more, they maintained 95% of their efficiency after 2,000 hours of operation, per the report.

Continue reading “Scientists make solar breakthrough that could majorly impact future of energy: ‘A critical step’” »

Nov 9, 2024

Elon Musk: How Trump’s presidency could benefit the Tesla boss

Posted by in categories: economics, Elon Musk, sustainability, transportation

He has frequently voiced concerns over the Biden administration’s approach to immigration and the economy, and claimed free speech would be at risk with another Democrat presidency.

As one of the president-elect’s most important backers, the tech billionaire donated more than $119m (£92m) to fund a Super PAC aimed at re-electing Trump.

He also spent the last weeks before election day running a get-out-the-vote effort in the battleground states, which included a daily giveaway of $1m to voters in those states.

Nov 9, 2024

Low-cost desalination device made from used tires could help address global water scarcity

Posted by in category: sustainability

Cause and effect. We understand this concept from an early age. Tug on a pull toy’s string, and the toy follows. Naturally, things get much more complicated as a system grows, as the number of variables increases, and as noise enters the picture. Eventually, it can become almost impossible to tell whether a variable is causing an effect or is simply correlated or associated with it.

Nov 8, 2024

Toyota To Offer 745-Mile Solid-State EV Battery

Posted by in categories: finance, sustainability, transportation

Toyota known for its hybrid innovation, has been cautious with fully electric vehicles (EVs), only launching its first EV, the bZ4X, in 2022.


Solid-state batteries are smaller and more durable, making them well-suited to daily fast charging and capable of carrying additional weight, like extra passengers or cargo. This technology has been difficult to scale up, but Toyota’s strong financial base and reputation for reliability position it uniquely to introduce these advanced batteries to the mainstream.

Historically, Toyota’s innovative, consumer-friendly designs, such as fuel-efficient cars in the 1970s and hybrids in the 1990s, have revolutionized the auto industry. Now, Toyota’s solid-state battery development could do the same, potentially transforming EVs from niche to mainstream by offering greater efficiency, performance, and convenience.

Nov 7, 2024

Cobalt-Copper Tandem Successfully Converts Carbon Dioxide to Ethanol

Posted by in category: sustainability

A new process for removing CO2 from the environment has been facilitated by a cobalt-copper catalyst.

Nov 7, 2024

Perovskite-silicon tandem solar cell based on copper(I) thiocyanate achieves 31.46% efficiency

Posted by in categories: solar power, sustainability

An international research team has fabricated a 1 cm2 perovskite-silicon tandem solar cell that utilizes a top cell based on a perovskite absorber integrating inorganic copper(I) thiocyanate (CuSCN).

A co-deposition strategy of CuSCN and perovskite is firstly developed to solve the key technical…


A Saudi-Chinese research team has fabricated a perovskite-silicon tandem solar cell without a hole transport layer (HTL) in the perovskite top cell. This innovative strategy, based on the co-deposition of copper(I) thiocyanate and perovskite in the top cell absorber, was intended at solving typical issues of HTLs in tandem devices.

Continue reading “Perovskite-silicon tandem solar cell based on copper(I) thiocyanate achieves 31.46% efficiency” »

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