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A soft co-crystalline solid electrolyte for lithium-ion batteries

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dc.contributor.author PRAKASH, PRABHAT en_US
dc.contributor.author Fall, Birane en_US
dc.contributor.author Aguirre, Jordan en_US
dc.contributor.author Sonnenberg, Laura A. en_US
dc.contributor.author Chinnam, Parameswara Rao en_US
dc.contributor.author Chereddy, Sumanth en_US
dc.contributor.author Dikin, Dmitriy A. en_US
dc.contributor.author VENKATNATHAN, ARUN en_US
dc.contributor.author Wunder, Stephanie L. en_US
dc.contributor.author Zdilla, Michael J. en_US
dc.date.accessioned 2023-04-19T06:48:08Z
dc.date.available 2023-04-19T06:48:08Z
dc.date.issued 2023-05 en_US
dc.identifier.citation Nature Materials, 22, 627–635. en_US
dc.identifier.issn 1476-4660 en_US
dc.identifier.issn 1476-1122 en_US
dc.identifier.uri https://doi.org/10.1038/s41563-023-01508-1 en_US
dc.identifier.uri http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/7703
dc.description.abstract Alternative solid electrolytes are the next key step in advancing lithium batteries with better thermal and chemical stability. A soft solid electrolyte, (Adpn)2LiPF6 (Adpn, adiponitrile), is synthesized and characterized that exhibits high thermal and electrochemical stability and good ionic conductivity, overcoming several limitations of conventional organic and ceramic materials. The surface of the electrolyte possesses a liquid nano-layer of Adpn that links grains for a facile ionic conduction without high pressure/temperature treatments. Further, the material can quickly self-heal if fractured and provides liquid-like conduction paths via the grain boundaries. A substantially high ion conductivity (~10−4 S cm–1) and lithium-ion transference number (0.54) are obtained due to weak interactions between ‘hard’ (charge dense) Li+ ions and the ‘soft’ (electronically polarizable) –C≡N group of Adpn. Molecular simulations predict that Li+ ions migrate at the co-crystal grain boundaries with a (preferentially) lower activation energy Ea and within the interstitial regions between the co-crystals with higher Ea values, where the bulk conductivity is a smaller but extant contribution. These co-crystals establish a special concept of crystal design to increase the thermal stability of LiPF6 by separating ions in the Adpn solvent matrix, and also exhibit a unique mechanism of ion conduction via low-resistance grain boundaries, which contrasts with ceramics or gel electrolytes. en_US
dc.language.iso en en_US
dc.publisher Springer Nature en_US
dc.subject Atomistic models en_US
dc.subject Batteries en_US
dc.subject 2023-APR-WEEK1 en_US
dc.subject TOC-APR-2023 en_US
dc.subject 2023 en_US
dc.title A soft co-crystalline solid electrolyte for lithium-ion batteries en_US
dc.type Article en_US
dc.contributor.department Dept. of Chemistry en_US
dc.identifier.sourcetitle Nature Materials en_US
dc.publication.originofpublisher Foreign en_US


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