Micro–nano water film enhanced interfacial solar evaporator enables a high evaporation rate of 2.18 kg m −2 h −1 under 1 sun.
An outdoor device with an enhanced condensation design demonstrates a high water production rate of 15.9–19.4 kg kW −1 h −1 m −2 .
A multi-objective predictive model is established to assess outdoor water production performance.