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For low voltage diodes you can use mosfets to get ultra low voltage drop, or just buy dedicated "ideal diode" components that are specifically for that: https://www.analog.com/media/en/technical-documentation/data...

You can also build a rectifier with no voltage drop using an op-amp with some diodes in the feedback loop. But that might be considered cheating :)

at that point (and in general) you'd like to use Schottky ones. MOSFETs are an option for low extra efficiency.