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المؤلفHuang Q.
المؤلفTurcheniuk K.
المؤلفRen X.
المؤلفMagasinski A.
المؤلفGordon D.
المؤلفBensalah N.
المؤلفYushin G.
تاريخ الإتاحة2020-03-25T12:18:04Z
تاريخ النشر2019
اسم المنشورAdvanced Energy Materials
المصدرScopus
الرقم المعياري الدولي للكتاب16146832
معرّف المصادر الموحدhttp://dx.doi.org/10.1002/aenm.201803323
معرّف المصادر الموحدhttp://hdl.handle.net/10576/13503
الملخصAs an alternative to commercial Ni- and Co-based intercalation-type cathode materials, conversion-type metal fluoride (MF x ) cathodes are attracting more interest due to their promises to increase cell-level energy density when coupled with lithium (Li) or silicon (Si)-based anodes. Among metal fluorides, iron fluorides (FeF 2 and FeF 3 ) are regarded as some of the most promising candidates due to their high capacity, moderately high potential and the very low cost of Fe. In this study, the impacts of electrolyte composition on the performance and stability of nanostructured FeF 2 cathodes are systematically investigated. Dramatic impacts of Li salt composition, Li salt concentration, solvent composition, and cycling potential range on the cathode's most critical performance parameters-stability, capacity, rate, and voltage hysteresis are discovered. In contrast to previous beliefs, it is observed that even if the Fe 2+ cation dissolution could be avoided, the dissolution of F ? anions may still negatively affect cathode performance. Formation of the more favorable cathode solid electrolyte interface (CEI) is found to minimize both processes.
راعي المشروعDifferent aspects of this work were supported by the Army Research Office (ARO grant number W911NF-12-1-0259) and by the Qatar National Research Fund under its National Priorities Research Program (grantnumber NPRP7-567-2-216). The authors also acknowledge fellowship support of Q.H. and X.R. by the China Scholarship Council.
اللغةen
الناشرWiley-VCH Verlag
الموضوعcathode solid electrolyte interphase
conversion-type cathodes
electrolyte composition
ion dissolution
lithium ion batteries
العنوانInsights into the Effects of Electrolyte Composition on the Performance and Stability of FeF 2 Conversion-Type Cathodes
النوعArticle
رقم العدد17
رقم المجلد9
dc.accessType Abstract Only


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