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Room-temperature mechanocaloric effects in lithium-based superionic materials

Author

Listed:
  • Arun K. Sagotra

    (School of Materials Science and Engineering, UNSW Sydney)

  • Dewei Chu

    (School of Materials Science and Engineering, UNSW Sydney)

  • Claudio Cazorla

    (School of Materials Science and Engineering, UNSW Sydney)

Abstract

Mechanocaloric materials undergo sizable temperature changes during stress-induced phase transformations and hence are highly sought after for solid-state cooling applications. Most known mechanocaloric materials, however, operate at non-ambient temperatures and involve first-order structural transitions that pose practical cyclability issues. Here, we demonstrate large room-temperature mechanocaloric effects in the absence of any structural phase transformation in the fast-ion conductor Li3N (|ΔS| ~ 25 J K−1 kg−1 and |ΔT| ~ 5 K). Depending on whether the applied stress is hydrostatic or uniaxial the resulting caloric effect is either direct (ΔT > 0) or inverse (ΔT

Suggested Citation

  • Arun K. Sagotra & Dewei Chu & Claudio Cazorla, 2018. "Room-temperature mechanocaloric effects in lithium-based superionic materials," Nature Communications, Nature, vol. 9(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-05835-9
    DOI: 10.1038/s41467-018-05835-9
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