High Power Density Electrochemical Thermocells for Inexpensively Harvesting Low-Grade Thermal Energy.

Zhang, Long; Kim, Taewoo; Li, Na; Kang, Tae June; Chen, Jun; Pringle, Jennifer M; Zhang, Mei; Kazim, Ali H et al. · Adv Mater · 2017

basic_science · Level V

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Abstract

Continuously operating thermo-electrochemical cells (thermocells) are of interest for harvesting low-grade waste thermal energy because of their potentially low cost compared with conventional thermoelectrics. Pt-free thermocells devised here provide an output power of 12 W m<sup>-2</sup> for an interelectrode temperature difference (ΔT) of 81 °C, which is sixfold higher power than previously reported for planar thermocells operating at ambient pressure.