Multi-core–shell-structured LiFePO4@Na3V2(PO4)3@C composite for enhanced low-temperature performance of lithium-ion batteries

نویسندگان

چکیده

In this work, a multi-core–shell-structured LiFePO4@Na3V2(PO4)3@C (LFP@NVP@C) composite was successfully designed and prepared to address inferior low-temperature performance of LiFePO4 cathode for lithium-ion batteries. Transmission electron microscopy (TEM) confirms the inner NVP outer carbon layers co-existed on surface LFP particle. When evaluated at operation, LFP@NVP@C exhibits an evidently enhanced electrochemical in term higher capacity lower polarization, compared with LFP@C. Even ? 10 °C 0.5C, delivers discharge ca. 96.9 mAh·g?1 voltage 3.3 V, which is attributed beneficial contribution coating. NASICON-structured open framework readily insertion/desertion Li+ will effectively reduce polarization reactions composite.

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ژورنال

عنوان ژورنال: Rare Metals

سال: 2021

ISSN: ['1867-7185', '1001-0521']

DOI: https://doi.org/10.1007/s12598-020-01669-x