2015
DOI: 10.1002/aenm.201401814
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Abstract: Keywords: Li-ion batteries, intercalation cathodes, disordered rock salt, Li 2 VO 2 F Advanced cathode materials with superior energy storage capability are highly demanded for mobile and stationary applications. The inherent structural feature of Li + hosts is critical for the battery performance. High-capacity conversion cathode materials often encounter large voltage hysteresis (low energy efficiency) accompanied with the structural reconstruction.[1]The current commercial cathode materials are still domina… Show more

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Cited by 179 publications
(311 citation statements)
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“…This is in contrast to previous studies on the fluorination of layered or disordered rocksalt-type cathodes, which either failed to incorporate fluorine in the bulk lattice of layered materials via solid-state synthesis 20, 21 , or employed mechanochemical ball milling to synthesize fluorinated disordered rocksalt phases 11 . X-ray diffraction (XRD) (Fig.…”
Section: Resultscontrasting
confidence: 71%
“…This is in contrast to previous studies on the fluorination of layered or disordered rocksalt-type cathodes, which either failed to incorporate fluorine in the bulk lattice of layered materials via solid-state synthesis 20, 21 , or employed mechanochemical ball milling to synthesize fluorinated disordered rocksalt phases 11 . X-ray diffraction (XRD) (Fig.…”
Section: Resultscontrasting
confidence: 71%
“…More recently, the design space for Li-excess materials was broadened to rocksalts with partial or complete cation disorder through the understanding that more than 10% Li-excess creates a percolation network of 0-TM channels through which Li can diffuse, despite the large degree of cation disorder. Such high capacity Li-excess disordered materials have recently been demonstrated in several chemical systems [9][10][11][12][13]. However, the excess Li needed to enhance Li diffusion reduces the number of sites available for the transition metal redox center, and the theoretical metal-redox capacity is further decreased by the need for a high-valent metal to compensate for the Li-excess.…”
Section: Introductionmentioning
confidence: 97%
“…45 This result can be consistent with the experimental fact that anion redox is further stabilized by the Sn substitution for Ru, Li 2 Ru x Sn 1¹x O 2 . 54 have been reported for high-capacity positive electrode materials. Historically, oxide-based materials with the cation-disordered rocksalt structure were regarded as electrochemically inactive as electrode materials because of a lack of the Li migration path in a bulk structure.…”
mentioning
confidence: 99%