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Precious metals are efficient oxygen electrocatalysts but suffer from poor stability and high cost. Now, nitrogen-doped carbon nanotubes derived from metal–organic frameworks are shown to have activity and durability comparable to that of Pt/C catalysts.
There is an intensive research effort in suppressing the first-cycle lithium loss in lithium-ion batteries. Now, a cathode prelithiation method with nanocomposites of conversion materials is demonstrated to compensate the initial lithium loss and improve the battery performance.
Biofuels offer a sustainable alternative to fossil fuels but may need large land-use changes. This study combines ecosystem and economic models to explore land-use allocation and greenhouse gas emissions for a 32-billion-gallon Renewable Fuel Standard in the US.
Safety is a major issue in the development of lithium-ion batteries. Now, a thermoresponsive polymer composite embedded into electrodes is shown to rapidly shut down batteries at overheating but quickly resume function at normal conditions.
Advanced batteries require careful control over the interfacial properties of their constituent materials. This study designs hierarchically structured cathode materials that are resistant to surface reconstruction, leading to improved cycling performance.