Key Highlights
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A new type of current collector for lithium metal batteries uses a one-step process to create a gradient of fluorinated carbon and copper-zinc alloy, guiding lithium to deposit uniformly from the bottom up. This design significantly extends battery life, enabling an anode-free battery to retain 81% of its capacity after 300 cycles while achieving a high energy density.
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Researchers have engineered dense, coherent nanotwins into a bismuth telluride thermoelectric material, which act as barriers to prevent the material’s microstructure from degrading at high temperatures. This breakthrough allows thermoelectric devices, which convert waste heat into electricity, to operate durably without losing their efficiency over time.
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A comprehensive review identifies that the main hurdle for commercial perovskite solar panels is their long-term stability under real-world weather conditions, not just their initial efficiency. The authors argue that better accelerated laboratory tests are needed to reliably predict how these promising, low-cost solar cells will perform outdoors for decades.
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