Solid-State Electrochemical Thermal Switches with Large Thermal Conductivity Switching Widths.

ABSTRACT: Thermal switches that switch the thermal conductivity (κ) of the active layers are attracting increasing attention as thermal management devices. For electrochemical thermal switches, several transition metal oxides (TMOs) are proposed as active layers. After electrochemical redox treatment, the crystal structure of the TMO is modulated, which results in the κ switching. However, the κ switching width is still small (<4 W m^-1 K^-1). In this study, it demonstrates that LaNiO_x-based solid-state electrochemical thermal switches have a κ switching width of 4.3 W m^-1 K^-1. Fully oxidized LaNiO₃ (on state) has a κ of 6.0 W m^-1 K^-1 due to the large contribution of electron thermal conductivity (κ_ele,

SUBMITTER: Bian Z 

PROVIDER: S-EPMC11348128 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature