Enhanced n-Type Thermoelectric Properties and Structure Evolution of Carbonized Metal-Coordination Polydopamine.

ABSTRACT: Carbonized polydopamine (cPDA) exhibits a nitrogenous graphite-like structure with n-type semiconductor property. However, the low electrical conductivity and Seebeck coefficient of cPDA cannot meet the needs of flexible thermoelectric devices. In this study, a series of metal ions were coordinated with cPDA to enhance n-type thermoelectric properties. At 300 K, all metal-coordination cPDA (metal-cPDA) samples obtain lower thermal conductivity compared to cPDA. Mn-cPDA exhibits the greatest Seebeck coefficient of -25.94 μV K^-1, which is almost six times higher than cPDA. Fe-cPDA shows the best electrical conductivity of 2.45 × 10⁵ S m^-1. An optimal power factor (PF) value of 11.93 μW m^-1 K^-2 is achieved in Ca-cPDA with the enhanced ele

SUBMITTER: Zhu Q 

PROVIDER: S-EPMC11191123 | biostudies-literature | 2024 Jun

REPOSITORIES: biostudies-literature