Fig. 6 Thermoelectric figure of merit of ZrCoBi-based half-Heuslers and measured heat-to-electricity conversion efficiency. Thermoelectric figure of merit.

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Fig. 6 Thermoelectric figure of merit of ZrCoBi-based half-Heuslers and measured heat-to-electricity conversion efficiency. Thermoelectric figure of merit of ZrCoBi-based half-Heuslers and measured heat-to-electricity conversion efficiency. (A) Thermoelectric figure of merit of ZrCo1–xNixBi (n-type) and ZrCo0.9Ni0.1Bi0.85Sb0.15 (n-type) and (B) comparison of the ZTs between ZrCo0.9Ni0.1Bi0.85Sb0.15 (n-type) and the other state-of-the-art n-type half-Heuslers. Measured heat-to-electricity conversion efficiency for (C) single legs and (D) the unicouple of ZrCo0.9Ni0.1Bi0.85Sb0.15 (n-type) and ZrCoBi0.65Sb0.15Sn0.2 (p-type). The inset in (C) is the ratio of the measured efficiency of p-type to n-type legs. Hangtian Zhu et al. Sci Adv 2019;5:eaav5813 Copyright © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).