L R AS Published on Tuesday 12 April 2022 - n° 401 - Categories:R&D
In brief: R & D
In brief: R & D
aluminium-nickel (Al-Ni) molten salt battery with long energy conservation
26% carbon-based perovskite solar cell without hole transport layer
23.9% inverted structure based perovskite solar cell
four years to explore the potential of agri-photovoltaics (agri-PV) in Europe
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Scientists at the US Department of Energy have developed an aluminium-nickel (Al-Ni) molten salt battery that is capable of retaining 92% of its initial capacity over 12-week periods, with a theoretical energy density of 260 W/hour per kg. It is akin to the battery turning off its self-charging function when it is at rest: the battery is charged by heating it to about 180 C, with its ions circulating in the liquid electrolyte. The device is then brought back to room temperature and the electrolyte becomes solid, trapping the ions that carry the stored energy.
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An international research team has developed a carbon-based perovskite solar cell without a hole-transport layer that has achieved an efficiency of 26%. This is a new design for perovskite solar cells without a hole transport layer (HTL), using carbon-based materials to replace the metal contact and HTL.
According to the team, these results pave the way for achieving high efficiencies in carbon-based perovskite solar cells
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Canadian scientists have fabricated a perovskite solar cell based on an inverted structure that achieved an efficiency of 23.9% and retained 92% of its initial performance after 500 hours of accelerated ageing tests. By carefully controlling the thickness of the perovskite layer, the group was also able to gain control over "quantum mechanical" properties such as the movement of electrons in the layer and the wavelengths of absorbed light.
https://www.pv-magazine.com/2022/04/08/quantum-adjustments-for-23-9-efficient-inverted-perovskite-solar-cell/
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Statkraft's Italian subsidiary has signed a four-year agreement to explore the potential of agri-photovoltaics (agri-PV) in Europe. The research aims to investigate new approaches, methodologies and technologies in the field of power generation and agriculture in order to achieve a proper integration between PV systems and agricultural production, optimising the yield in both areas.
Editor's note: This text is curious. Making new approaches for electricity production on agricultural land is normal. However, "achieving proper integration by optimising the yield in both areas" would mean that there is currently no integration between the two and that the yields are not well calculated!
