Biomass-derived, 3D interconnected N-doped carbon foam as a host matrix for Li/Na/K-selenium batteries

•Biomass-derived 3D interconnected N-doped carbon foam is fabricated.•Carbon foam acts as a host matrix for Li/Na/K-selenium batteries.•Ultrahigh rate performance is achieved in Li-Se, Na-Se batteries.•Improved cycling stability is also demonstrated K-Se batteries. Rechargeable alkali metal-Se batte...

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