Effects of MnO nanolayer coating on Li3V2(PO4)3/C cathode material for lithium-ion batteries

Yang, Zhongzhao; Huang, Can; Ke, Rongping; Xi, Jingchao; Guo, Yonglang

doi:10.1016/j.matchemphys.2014.11.063

Cited by 12 publications

(4 citation statements)

References 29 publications

(24 reference statements)

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“…The Li + ion diffusion coefficient of the MnO/CCFF‐35.38 electrode decreases obviously due to the excessive MnO, thicker SEI film and less carbon, which can be also reflected by the much bigger value of R sei (17.86 Ω). From the MnO/CCFF‐25.14 to MnO/CCFF‐31.47 electrode, the R sei of the MnO/CCFF‐31.47 electrode (0.184 Ω) is much smaller than that of MnO/CCFF‐25.14 electrode (4.56 Ω) and MnO/CCFF‐29.48 (1.07 Ω), indicating MnO with the suitable content is more favorable for the stabilization of SEI film . Moreover, with the mass loading of MnO increasing, the R ct values of MnO/CCFF electrodes keep growing, corresponding to the faradaic resistance of MnO.…”

Section: Resultsmentioning

confidence: 97%

“…From the MnO/CCFF-25.14 to MnO/CCFF-31.47 electrode, the R sei of the MnO/CCFF-31.47 electrode (0.184 Ω) is much smaller than that of MnO/CCFF-25.14 electrode (4.56 Ω) and MnO/CCFF-29.48 (1.07 Ω), indicating MnO with the suitable content is more favorable for the stabilization of SEI film. [32] Moreover, with the mass loading of MnO increasing, the R ct values of MnO/CCFF electrodes keep growing, corresponding to the faradaic resistance of MnO. Consequently, adding appropriate amount (31.47 wt.%) of MnO into carbon substrate is more advantageous to exert the synergistic effect of composite materials, simultaneously improving the SEI film structure and the mass transfer of Li + ion diffusion.…”

Section: Methodsmentioning

confidence: 99%

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MnO Nanoparticles Supported by Carbonized Cotton Fiber Foil as a Free‐Standing Anode for High‐Performance Lithium Ion Batteries

et al. 2019

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A three‐dimensional (3D) network structure composite of MnO nanoparticles (NPs) and carbonized cotton fiber foil (CCFF) is introduced as an anode material free of binders and conductive additives for Li‐ion batteries (LIBs). CCFF with its closely linked networks provides a stable framework for metal oxides and improves the electrical conductivity of the composite. MnO NPs are evenly distributed on the surface of CCFF and concurrently embedded in the carbon matrix through simply annealing the MnO precursor (MnO−P)/cotton fiber foil (CFF) composite. When the obtained MnO/CCFF composite is used as a self‐supporting anode in LIBs, the electrode displays stable cycling performance and superior rate capability, which can be attributed to the close contact between the well‐dispersed MnO NPs and the interlaced carbon fibers. The rational design using CCFF as the current collector in batteries and the carbon substrate to support the active materials could greatly enhance the electronic/ionic transmission channels and effectively relieve the volume expansion of MnO during the electrochemical process. In addition, the self‐standing MnO/CCFF electrode may serve as a template for the design of other metal oxide anode materials supported by carbonized cotton fiber foil for high‐performance LIBs.

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Section: Resultsmentioning

confidence: 97%

Section: Methodsmentioning

confidence: 99%

MnO Nanoparticles Supported by Carbonized Cotton Fiber Foil as a Free‐Standing Anode for High‐Performance Lithium Ion Batteries

et al. 2019

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“…Analogous to other cathode materials, metallic oxides coatings are chosen to overcome this instability. For example, RuO 2 [203], SiO 2 [201,239], MgO [202], ZrO 2 [240], Al 2 O 3 [241], CeO 2 [242] and MnO [243] are used to modify the surface of LVP. Besides, the sample b also has twice the ionic conductivity of LVP/C.…”

Section: Lvp-oxide Compositesmentioning

confidence: 99%

A promising cathode for Li-ion batteries: Li3V2(PO4)3

Liu

Massé

Nan

et al. 2016

Energy Storage Materials

138

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Lithium ion batteries are essential energy storage devices that power the electronics that let us share information and connect with people anywhere at any time. As the demand for uninterrupted energy performance rises, corresponding challenges need to be overcome in both industry and academia. Currently, cathode performance limits energy-power density in Li-ion batteries. Materials chemists and scientists have devoted much effort to explore cathodes with higher capacities and electrochemical potentials. Lithium vanadium phosphate, a rising star in the cathode family, has attracted more attention in recent years because it can display a high average potential (>4.0 V) and specific capacity (197 mAh/g) with excellent structural stability during cycling. However, the separated VO 6 octahedra intrinsically limit electrical conductivity, which hurts the rate capability. This review focuses on the fundamental issues in lithium vanadium phosphate and summarizes its crystal structure, ion diffusion, and electrochemical characteristics. Three synthetic aspects are described carefully: doping, composite and designing microstructures. At the same time, some rules are distilled from the report results, which may be referred to in order to tune the electrochemical performance in electrode materials.

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“…[ 34–36 ] Metal oxides, with higher ionic conductivity, provide significant success in the formation of the coating layer. [ 37–39 ] In this regard, the atomic layer deposition (ALD) technique enables deposition of an ultrathin protective layer of few tens of Angstrom thickness as artificial CEI through cathode surface modification. Further, the ALD technique provides excellent control over the composition and thickness of the deposited film.…”

Section: Introductionmentioning

confidence: 99%

Interfacial Engineering of Na₃V₂(PO₄)₂F₃ Hollow Spheres through Atomic Layer Deposition of TiO₂: Boosting Capacity and Mitigating Structural Instability

Sharabani

Taragin

Perelshtein

et al. 2021

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To mitigate the associated challenges of instability and capacity improvement in Na3V2(PO4)2F3 (NVPF), rationally designed uniformly distributed hollow spherical NVPF and coating the surface of NVPF with ultrathin (≈2 nm) amorphous TiO2 by atomic layer deposition is demonstrated. The coating facilitates higher mobility of the ion through the cathode electrolyte interphase (CEI) and enables higher capacity during cycling. The TiO2@NVPF exhibit discharge capacity of >120 mAhg−1, even at 1C rates, and show lower irreversible capacity in the first cycle. Further, nearly 100% capacity retention after rate performance in high current densities and 99.9% coulombic efficiency after prolonged cycling in high current density is reported. The improved performance in TiO2@NVPF is ascribed to the passivation behavior of TiO2 coating which protects the surface of NVPF from volume expansion, significantly less formation of carbonates, and decomposition of electrolyte, which is also validated through post cycling analysis. The study shows the importance of ultrathin surface protection artificial CEI for advanced sodium‐ion battery cathodes. The protection layer is diminishing parasitic reaction, which eventually enhances the Na ion participation in reaction and stabilizes the cathode structure.

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Effects of MnO nanolayer coating on Li3V2(PO4)3/C cathode material for lithium-ion batteries

Cited by 12 publications

References 29 publications

MnO Nanoparticles Supported by Carbonized Cotton Fiber Foil as a Free‐Standing Anode for High‐Performance Lithium Ion Batteries

MnO Nanoparticles Supported by Carbonized Cotton Fiber Foil as a Free‐Standing Anode for High‐Performance Lithium Ion Batteries

A promising cathode for Li-ion batteries: Li3V2(PO4)3

Interfacial Engineering of Na₃V₂(PO₄)₂F₃ Hollow Spheres through Atomic Layer Deposition of TiO₂: Boosting Capacity and Mitigating Structural Instability

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Effects of MnO nanolayer coating on Li3V2(PO4)3/C cathode material for lithium-ion batteries

Cited by 12 publications

References 29 publications

MnO Nanoparticles Supported by Carbonized Cotton Fiber Foil as a Free‐Standing Anode for High‐Performance Lithium Ion Batteries

MnO Nanoparticles Supported by Carbonized Cotton Fiber Foil as a Free‐Standing Anode for High‐Performance Lithium Ion Batteries

A promising cathode for Li-ion batteries: Li3V2(PO4)3

Interfacial Engineering of Na3V2(PO4)2F3 Hollow Spheres through Atomic Layer Deposition of TiO2: Boosting Capacity and Mitigating Structural Instability

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Interfacial Engineering of Na₃V₂(PO₄)₂F₃ Hollow Spheres through Atomic Layer Deposition of TiO₂: Boosting Capacity and Mitigating Structural Instability