Facile lithium ion transport through superionic pathways formed on the surface of Li3V2(PO4)3/C for high power Li ion battery

Dong Wook Han; Sung Jin Lim; Yong Il Kim; Seung Ho Kang; Yoon Cheol Lee; Yong Mook Kang

doi:10.1021/cm500509q

Facile lithium ion transport through superionic pathways formed on the surface of Li₃V₂(PO₄)₃/C for high power Li ion battery

Dong Wook Han, Sung Jin Lim, Yong Il Kim, Seung Ho Kang, Yoon Cheol Lee, Yong Mook Kang

Dept. of Future Energy Convergence

Research output: Contribution to journal › Article › peer-review

64 Scopus citations

Abstract

We report a new discovery for enhancing Li ion transport at the surface of Li₃V₂(PO₄)₃ particles through superionic pathways built along an ionic conductor. The Li₃V _1.95Zr_0.05(PO₄)₃/C composite has much higher initial discharge capacity, superior rate-capability, and excellent cycling performance when compared with pristine Li₃V ₂(PO₄)₃/C. This is partly due to the occupation of vanadium sites by Zr⁴⁺ ions in the Li₃V ₂(PO₄)₃ host crystals and facile Li ion migration through a LiZr₂(PO₄)₃-like secondary phase that forms on the surface of the Li₃V_1.95Zr _0.05(PO₄)₃ particles. Our findings about high Li ion transport and structure stabilization induced by Zr incorporation suggests a breakthrough strategy for achieving high-power Li rechargeable batteries using NASICON-structured cathode materials in combination with nanoarchitecture tailoring.

Original language	English
Pages (from-to)	3644-3650
Number of pages	7
Journal	Chemistry of Materials
Volume	26
Issue number	12
DOIs	https://doi.org/10.1021/cm500509q
State	Published - 24 Jun 2014

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title = "Facile lithium ion transport through superionic pathways formed on the surface of Li3V2(PO4)3/C for high power Li ion battery",

abstract = "We report a new discovery for enhancing Li ion transport at the surface of Li3V2(PO4)3 particles through superionic pathways built along an ionic conductor. The Li3V 1.95Zr0.05(PO4)3/C composite has much higher initial discharge capacity, superior rate-capability, and excellent cycling performance when compared with pristine Li3V 2(PO4)3/C. This is partly due to the occupation of vanadium sites by Zr4+ ions in the Li3V 2(PO4)3 host crystals and facile Li ion migration through a LiZr2(PO4)3-like secondary phase that forms on the surface of the Li3V1.95Zr 0.05(PO4)3 particles. Our findings about high Li ion transport and structure stabilization induced by Zr incorporation suggests a breakthrough strategy for achieving high-power Li rechargeable batteries using NASICON-structured cathode materials in combination with nanoarchitecture tailoring.",

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AU - Han, Dong Wook

AU - Lim, Sung Jin

AU - Kim, Yong Il

AU - Kang, Seung Ho

AU - Lee, Yoon Cheol

AU - Kang, Yong Mook

PY - 2014/6/24

Y1 - 2014/6/24

N2 - We report a new discovery for enhancing Li ion transport at the surface of Li3V2(PO4)3 particles through superionic pathways built along an ionic conductor. The Li3V 1.95Zr0.05(PO4)3/C composite has much higher initial discharge capacity, superior rate-capability, and excellent cycling performance when compared with pristine Li3V 2(PO4)3/C. This is partly due to the occupation of vanadium sites by Zr4+ ions in the Li3V 2(PO4)3 host crystals and facile Li ion migration through a LiZr2(PO4)3-like secondary phase that forms on the surface of the Li3V1.95Zr 0.05(PO4)3 particles. Our findings about high Li ion transport and structure stabilization induced by Zr incorporation suggests a breakthrough strategy for achieving high-power Li rechargeable batteries using NASICON-structured cathode materials in combination with nanoarchitecture tailoring.

AB - We report a new discovery for enhancing Li ion transport at the surface of Li3V2(PO4)3 particles through superionic pathways built along an ionic conductor. The Li3V 1.95Zr0.05(PO4)3/C composite has much higher initial discharge capacity, superior rate-capability, and excellent cycling performance when compared with pristine Li3V 2(PO4)3/C. This is partly due to the occupation of vanadium sites by Zr4+ ions in the Li3V 2(PO4)3 host crystals and facile Li ion migration through a LiZr2(PO4)3-like secondary phase that forms on the surface of the Li3V1.95Zr 0.05(PO4)3 particles. Our findings about high Li ion transport and structure stabilization induced by Zr incorporation suggests a breakthrough strategy for achieving high-power Li rechargeable batteries using NASICON-structured cathode materials in combination with nanoarchitecture tailoring.

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Facile lithium ion transport through superionic pathways formed on the surface of Li₃V₂(PO₄)₃/C for high power Li ion battery

Abstract

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