Lead-free (Ag,K)NbO3 materials forhigh-performance explosive energy conversion

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dc.contributor.authorLiu, Zen_AU
dc.contributor.authorLu, Ten_AU
dc.contributor.authorXue, Fen_AU
dc.contributor.authorNie, HCen_AU
dc.contributor.authorWithers, RLen_AU
dc.contributor.authorStuder, AJen_AU
dc.contributor.authorKremer, Fen_AU
dc.contributor.authorNarayanan, Nen_AU
dc.contributor.authorDong, XLen_AU
dc.contributor.authorYu, DHen_AU
dc.contributor.authorChen, LQen_AU
dc.contributor.authorLiu, Yen_AU
dc.contributor.authorWang, GSen_AU
dc.date.accessioned2023-05-05T01:25:32Zen_AU
dc.date.available2023-05-05T01:25:32Zen_AU
dc.date.issued2020-05-20en_AU
dc.date.statistics2023-05-01en_AU
dc.description.abstractExplosive energy conversion materials with extremely rapid response times have broad and growing applications in energy, medical, defense, and mining areas. Research into the underlying mechanisms and the search for new candidate materials in this field are so limited that environment-unfriendly Pb(Zr,Ti)O3 still dominates after half a century. Here, we report the discovery of a previously undiscovered, lead-free (Ag0.935K0.065)NbO3 material, which possesses a record-high energy storage density of 5.401 J/g, enabling a pulse current ~ 22 A within 1.8 microseconds. It also exhibits excellent temperature stability up to 150°C. Various in situ experimental and theoretical investiga-tions reveal the mechanism underlying this explosive energy conversion can be attributed to a pressure-induced octahedral tilt change from a−a−c+ to a−a−c−/a−a−c+, in accordance with an irreversible pressure-driven ferroelectric-antiferroelectric phase transition. This work provides a high performance alternative to Pb(Zr,Ti)O3 and also guidance for the further development of new materials and devices for explosive energy conversion. Copyright © 2020 The Authors. CC-By 4.0 licenceen_AU
dc.identifier.articlenumbereaba0367en_AU
dc.identifier.citationLiu, Z., Lu, T., Xue, F., Nie, H., Withers, R., Studer, A., Kremer, F., Narayanan, N., Dong, X., Yu, D., Chen, L., Liu, Y., & Wang, G. (2020). Lead-free (Ag,K)NbO3materials for high-performance explosive energy conversion. Science Advances, 6(21), eaba0367. doi.org/10.1126/sciadv.aba0367en_AU
dc.identifier.issn2375-2548en_AU
dc.identifier.issue21en_AU
dc.identifier.journaltitleScience Advancesen_AU
dc.identifier.urihttps://www.science.org/doi/epdf/10.1126/sciadv.aba0367en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/15006en_AU
dc.identifier.volume6en_AU
dc.language.isoenen_AU
dc.publisherScience Advancesen_AU
dc.subjectMaterialsen_AU
dc.subjectEnergyen_AU
dc.subjectMiningen_AU
dc.subjectFerroelectric materialsen_AU
dc.subjectConversionen_AU
dc.subjectLeaden_AU
dc.titleLead-free (Ag,K)NbO3 materials forhigh-performance explosive energy conversionen_AU
dc.typeJournal Articleen_AU
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