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Cadmium selenide solar cell with 1.88% efficiency

The cell may be potentially used as a top subcell in tandem crystalline silicon-based devices. It was built with CdSe thin film with a direct bandgap of 1.72 eV.

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Japanese consortium builds lithium-air battery with energy density of 500 Wh/kg

A Japanese group has developed a storage system with potential applications in residential storage, electric vehicles, drones and Internet-of-Things devices.

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Improving compressed air energy storage efficiency via chemical reactions

Scientists in the United States have proposed to use a thermochemical energy storage (TCES) technique that stores energy in chemical bonds to recover the heat produced during air compression operations. According to them, this innovation may increase the round-trip efficiency of compressed air energy storage to 60%.

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Residential building fully reliant on hydrogen for space heating, hot water

The campus of the Delft University of Technology (TU Delft) in the Netherlands is currently hosting a retrofitted existing building provided with heating by an H2 heating boiler in the attic. The boiler is linked to an underground hydrogen system.

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RTI International seeks developers for three solar mini grids in Uganda

The U.S.-based non-profit organization is supporting the United States Agency for International Development (USAID) in the development of the three mini grids. The incentives for the projects will be provided in the form of grants.

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Perovskite solar cell with 24.33% efficiency via ionic liquid capping layer

Developed by scientists in China, the cell achieved an open-circuit voltage of 1.192V, and a fill factor of 80.67%. Its perovskite capping layer was treated with a special ionic liquid that had a positive influence on both the device’s efficiency and stability.

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South Korea installed 4.4 GW of PV capacity in 2021

South Korea’s cumulative installed PV capacity hit 22 GW at the end of 2021, according to provisional figures from the Korea Energy Agency.

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Solar-plus-storage for aquaculture aeration

Recent research from Thailand has shown that solar-plus-storage on floating platforms could be the cheapest option to power energy-intensive aeration systems in aquaculture projects. The battery accounts for around 54% of the capital costs, which is why system sizing would be key for economic viability.

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Vattenfall launches high-temperature heat pump solution to replace gas boilers

Developed in partnership with Dutch heating specialist Feenstra, the all-electric heat pump solution will initially be available in the Netherlands. The system’s buffer works as a heat battery that is used to provide heat to radiators and generate hot tap water.

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New tech to reduce mechanical stress in floating PV arrays

French start-up HelioRec has developed a new floater that can contain water to add more weight and increase its stability on the water. According to its creators, the new product can be 3.5 times more stable than conventional blow-molded floaters.

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