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Compressed air tech for solar module cleaning, cooling shows promise in India field-testing

British scientists have reported significant restoration of the panel performance with the experimental compressed air system developed by them for the simultaneous cleaning and cooling of PV modules. The system was built with a compressed-air unit which was made of a compressor, an air tank, and an airflow regulation valve, and a series of nozzles. The technique was tested on a PV system located in northwestern India.

Harvard scientists unveil solid-state lithium battery that can be charged and discharged at least 10,000 times

US scientists have created a new design for lithium-metal, solid-state batteries that should avoid the formation of dendrites that grow into the electrolyte. Their multilayered battery could potentially recharge electric vehicles within 10 to 20 minutes.

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‘Hydrogen as a universal climate solution might be a bit of false promise’

Hydrogen and hydrogen-based fuels will not be able to move forward fast enough to replace fossil fuels and tackle climate change, according to a German-Swiss research team that claims direct electrification alternatives are cheaper and easier to implement. The scientists cite too-high prices, short-term scarcity and long-term uncertainty, as the main reasons for their skepticism.

New tech to identify best locations for floating PV

Norway’s Glint Solar and the Norwegian Geotechnical Institute have developed an algorithm that is able to automatically calculate wave heights and wind directions at potential locations for floating PV arrays. It considers the geometry of the water surface as well as 40 years of data on wind conditions.

Recycling rare-earth elements from dead lithium batteries

American Resources Corporation is developing a process to separate pure rare earth metals from lithium-ion batteries used in electric vehicles or power plants based on renewable energy. The technique is described as a two-zone ligand-assisted displacement chromatography (LAD) that is able to produce metals with high yields and purity of over 99%.

Leclanché unveils modular, plug-and-play solution for utility scale storage

The proposed solution is claimed to be able to mitigate potential fire risk, improve logistics and reduce costs. It consists of a series of interchangeable wide blocks that are said to be easily movable for simplified transportation.

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Meyer Burger unveils 400 W heterojunction solar module

The solar module will be available in three versions – white, black, and glass-glass. The products have an output of up to 400 W, but when the bifacial effect is optimally used, the output of the glass-glass module can reach up to 430 W. Both the white and black modules weigh less than 20 kg.

Longi unveils two PV modules for distributed generation

The two new products will be part of the Hi-MO4m panel series for rooftop applications. Their efficiency ranges from 19.2% to 21.2%.

REC launches 405 W black solar module with gapless design

The new heterojunction panel series features an efficiency of up to 21.9 % and an operating temperature coefficient of -0.26% per degree Celsius.

Fraunhofer ISE achieves 35.9% efficiency for III-V triple-junction solar cell based on silicon

The cell, which looks externally like a device with a two-terminal architecture, was built with III-V semiconductor layers that were connected to the silicon sub-cell on the atomic level. The cell may be used in electrically powered aircraft and drones.

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