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New stack design for cheaper redox flow batteries

German scientists have proposed a new design for stacks used in redox flow batteries. Through a powder-to-roll process, a device that weighs 80% less than a conventional stack was fabricated.

New electrolyte boosts lithium-air batteries

Scientists in the UK reported a breakthrough in lithium-oxygen batteries, achieved by experimenting with different electrolyte compositions. Working with ionic liquids, they were able to tweak the electrolyte recipe to minimize unwanted reactions during battery cycling, and greatly improve on both performance and stability.

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%.

The best radiative cooling tech for PV arrays

Scientists in China have analyzed the radiative cooling techniques used in combination with solar energy systems such as PV arrays, solar thermal collectors, and concentrated PV installations. They identified five major system typologies based on functionality and working time.

Arkolia pairs biogas with self-consumption PV plant

Arkolia has coupled a biogas purification plant in France with a 100 kW rooftop solar array.

Semitransparent selenium solar cell for applications in tandem devices

The bifacial device showed a power conversion efficiency of 5.2% on the front side through an n-type contact and 2.7% on the rear side through a p-type contact.

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.

Solid-state battery maker picks up $130 million investment

US based battery company Solid Power announced that it has received $130 million in new funding from investors including Ford and BMW. With this backing, the company plans to begin pilot scale production of solid-state lithium-ion batteries suitable for electric vehicles early next year.

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A stable sodium battery, without the anode

Scientists in the U.S. demonstrated a sodium-ion battery with no anode, that retained 99.93% of its initial capacity per cycle. Their design was able to overcome many of the stability issues associated with using ‘pure’ alkali metals in batteries, thanks to carefully minimizing water content in the liquid electrolyte.

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16.63%-efficient perovskite PV module via slot-die coating

Scientists in China have developed a large-area perovskite solar panel by utilizing diphenyl sulfoxide (DPSO) as an electron acceptor. The device was fabricated via slot-die coating, and featured a parallel-interconnection architecture.

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