Decoupled electron–phonon transport in Ag2Se thermoelectric materials through constructing TiO2/MoS2 co-decorated cell-membrane-mimic grain boundaries

Inspired by the cell membrane with selective permeability, we construct bio-mimic grain boundaries with TiO 2 and MoS 2 co-decoration in Ag 2 Se to decouple electron scattering from strong phonon scattering, increasing the zT value of Ag 2 Se by up to 60%.