2022
DOI: 10.1016/j.matchemphys.2022.126492
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Phosphazene based LATP precursor for a CEI coating layer on high voltage LiNi0.5Mn1.5O4 cathode with improved cycling durability

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Cited by 7 publications
(6 citation statements)
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“…Generally, a stable and dense CEI layer can act as a protective film to prevent the electrolyte from corroding the cathode. 48,49 Similar to the case of R sf , LNMO@LSO-x electrodes also exhibit lower R ct values at each stage and a lower increasing rate with cycle number, especially for LNMO@LSO-1 electrode, as shown in Figure 7h, which can be ascribed to the excellent ionic conductivity of Li 2 SiO 3 coating, which can reduce the migration barrier of Li + ions at the electrode/electrolyte interface. Figure 8 shows the SEM images of LNMO, LNMO@LSO-1, and LNMO@LSO-2 electrodes after 200 cycles at 25 °C.…”
Section: Resultsmentioning
confidence: 53%
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“…Generally, a stable and dense CEI layer can act as a protective film to prevent the electrolyte from corroding the cathode. 48,49 Similar to the case of R sf , LNMO@LSO-x electrodes also exhibit lower R ct values at each stage and a lower increasing rate with cycle number, especially for LNMO@LSO-1 electrode, as shown in Figure 7h, which can be ascribed to the excellent ionic conductivity of Li 2 SiO 3 coating, which can reduce the migration barrier of Li + ions at the electrode/electrolyte interface. Figure 8 shows the SEM images of LNMO, LNMO@LSO-1, and LNMO@LSO-2 electrodes after 200 cycles at 25 °C.…”
Section: Resultsmentioning
confidence: 53%
“…However, for LNMO@LSO-1, the reaction of Li 2 SiO 3 with HF can prevent the corrosion of the CEI layer by HF, which is helpful to the formation of a stable and dense CEI layer. Generally, a stable and dense CEI layer can act as a protective film to prevent the electrolyte from corroding the cathode. , Similar to the case of R sf , LNMO@LSO- x electrodes also exhibit lower R ct values at each stage and a lower increasing rate with cycle number, especially for LNMO@LSO-1 electrode, as shown in Figure h, which can be ascribed to the excellent ionic conductivity of Li 2 SiO 3 coating, which can reduce the migration barrier of Li + ions at the electrode/electrolyte interface.…”
Section: Resultsmentioning
confidence: 72%
“…The LATP coating provides a more efficient route for Li + diffusion preventing the dissolution of Mn 3+ during cycling. 33 J. Zhang et al achieved the dual effect of Li 2 ZrO 3 coating and Zr 4+ doping by coating LNMO with Li 2 ZrO 3 and forcing some of the Zr 4+ to enter the lattice under high temperature calcination. The Li 2 ZrO 3 coating prevents the direct contact between the cathode material and the electrolyte, reduces the dissolution of Mn 3+ , and provides high Li + conductivity, which improve the interfacial properties; Zr 4+ doping produces Mn 3+ to improve electronic conductivity.…”
Section: Modication Of Lnmo By Surface Coatingmentioning
confidence: 99%
“…The cathode electrolyte interphase (CEI) occurs as SEI on the cathode when the HOMO energy level of the electrolyte and Li salt is higher than the LUMO energy level of the cathode. 33 Therefore, at such a high voltage of about 4.7 V, a thick and unstable CEI lm may be formed, increasing the interfacial resistance of Li-ion batteries. 31 LNMO has so many advantages that we want to nd a solution to its existing problems.…”
Section: Introductionmentioning
confidence: 99%
“…Among the various coating materials, solid electrolytes (oxide solid electrolytes LATP and LLZO, etc.) are more promising coating materials thanks to their high lithium-ion conductivity [ 37 , 38 ] (10 −4 ~10 −3 S cm −1 ) and wide operating range, so more and more research has begun to focus on the use of suitable solid electrolytes to build a stable and compatible interface for LNMO-based batteries [ 39 , 40 , 41 ]. In this study, NASION-type LATP solid-state electrolytes were selected as the primary part of the composite coating layer, improving electrochemical properties by stabilizing the structure.…”
Section: Introductionmentioning
confidence: 99%