NASICON Open Framework Structured Transition Metal Oxides for Lithium Batteries

Begam, K. M.; Michael, M.S.; Prabaharan, S. R. S.

doi:10.5772/9115

Cited by 2 publications

(4 citation statements)

References 48 publications

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“…Poly‐anion cathode materials have attracted quite a large amount of attention following the pioneering works of Goodenough et al158, 159 These materials include compounds with a NASICON‐type crystal lattice Li x $ \dot M_2 $ ($ \dot X $ O 4 ) 3 (here $ \dot M $ is Ni, Co, Mn, Fe, Ti or V and $ \dot X $ is S, P, As, Mo or W), an olivine‐type crystal lattice Li$ \ddot M\ddot X $ x O 4 (here $ \ddot M $ is Fe, Co, Mn or Ni and $ \ddot X $ is P, Mo, W or S),160 and poly‐anion materials with tavorite‐related structures (tavorite, triplite, maxwellite, sillimanite), with the general formula LiM M 1 − δ δ (ZO 4 )X 1‐α $ \dot X $ α , where at least one of $ \dot M $ or $ \ddot M $ is a metal with several possible oxidation states, Z is commonly phosphorus or sulfur, and X and $ \dot X $ are oxygen, a hydroxyl group, or a halogen (commonly fluorine) 161–164…”

Section: Lithium Transition Metal Oxide‐based Cathodesmentioning

confidence: 99%

“…This feature makes NASICONs promising materials for rechargeable lithium batteries 168. The conduction pathways, which NASICON frameworks offer for Li + motion, are commonly considered 1D paths along the $ \bar C $ ‐axis 160, 169. The conducting channels are not really straight, linear pathways, but zigzag, wavy pathways 170, 171.…”

Section: Lithium Transition Metal Oxide‐based Cathodesmentioning

confidence: 99%

“…The Li x $ \ddot M\ddot X $ O 4 [$ \ddot M $ = Fe, Co, Mn or Ni and $ \ddot X $ = P, Mo, W or S] olivine structure has Li and $ \ddot M $ atoms in the octahedral sites and $ \ddot X $ atoms in the tetrahedral sites of a hexagonal‐close‐packed oxygen array. With Li in a continuous chain of edge‐shared octahedra on alternate planes, a reversible topotactic insertion/extraction of lithium from/to these chains is also possible and appears to be analogous to the extraction or insertion of lithium in NASICON‐type materials 160, 173. Similarly to NASICON, Li + motion is predominantly exercised through 1D wavy pathways along a [010] crystallographic axis174, 175 (this finding, which looks natural from the schematic structure image of the olivine‐type material, is shown in Figure ); a careful consideration of Li + dynamics in the olivine lattice also reveals that there is Li + hopping between different [010] pathways as well 176.…”

Section: Lithium Transition Metal Oxide‐based Cathodesmentioning

confidence: 99%

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Higher, Stronger, Better…︁ A Review of 5 Volt Cathode Materials for Advanced Lithium‐Ion Batteries

Kraytsberg

Ein‐Eli

2012

Advanced Energy Materials

657

455

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The ever-increasing demand for high-performing, economical, and safe power storage for portable electronics and electric vehicles stimulates R&D in the fi eld of chemical power sources. In the past two decades, lithium-ion technology has proven itself a most robust technology, which delivers high energy and power capabilities. At the same time, current technology requires that the energy and power capabilities of Li-ion batteries be 'beefed up' beyond the existing state of the art. Increasing the battery voltage is one of the ways to improve battery energy density; in Li-ion cells, the objective of current research is to develop a 5-volt cell, and at the same time to maintain high specifi c charge capacity, excellent cycling, and safety. Since current anode materials possess working potentials fairly close to the potential of a lithium metal, the focus is on the development of cathode materials. This work reviews and analyzes the current state of the art, achievements, and challenges in the fi eld of high-voltage cathode materials for Li-ion cells. Some suggestions regarding possible approaches for future development in the fi eld are also presented. REVIEW compromised). Since the carbonaceous anode potential (vs. Li/Li + ) V anode Li Li + ∼ 0, the cell potential, V cell , is dictated by the cathode potential V cathode Li Li + , i.e., by the type of cathode material employed. Electrolyte RequirementsCell potential, V cell is not governed by cell electrolyte, but the employment of inadequate electrolyte compromises cell performance: the electrolyte should not experience oxidation/ reduction at the electrode surface in the course of operation. If the electrolyte solution comprises solvent, S, and ion species S{A + }{B} − , the thermodynamic conditions of electrolyte stability are that the potentials of the electrolyte redox reactions should be in the cell voltage window, as shown in Figure 2 . The necessary conditions for these potentials are given by Equation 2 : the Li-ion material cost and their environmental compatibility now receive much attention.

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Section: Lithium Transition Metal Oxide‐based Cathodesmentioning

confidence: 99%

Section: Lithium Transition Metal Oxide‐based Cathodesmentioning

confidence: 99%

Section: Lithium Transition Metal Oxide‐based Cathodesmentioning

confidence: 99%

See 1 more Smart Citation

Higher, Stronger, Better…︁ A Review of 5 Volt Cathode Materials for Advanced Lithium‐Ion Batteries

Kraytsberg

Ein‐Eli

2012

Advanced Energy Materials

657

455

View full text Add to dashboard Cite

show abstract

“…Rechargeable batteries have attracted much attention in the last few decades with the growing energy demand to empower modern consumer electronics, hybrid electric automobiles, and stationary power grids. Among all battery chemistries, lithium-ion batteries are considered to be the most advanced rechargeable batteries because of their unmatched combination of high power, long cycle life, and light weight induced volumetric/gravimetric energy densities. − These properties mostly depend on crystal structure stability of electrode materials, − and hence, there has been an extensive research on polyanionic materials having stable (WO 4 ) 2– or (MoO 4 ) 2– framework involving new chemistry and greater capacity for Li-ion as well as Na-ion batteries. − Interestingly, strong binding energy of these polyanions is found to stabilize the crystal structure, which could eventually result in higher cycling performance …”

Section: Introductionmentioning

confidence: 99%

In Situ Neutron Diffraction Studies of LiCe(WO₄)₂ Polymorphs: Phase Transition and Structure–Property Correlation

et al. 2018

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Polymorphs of LiCe(WO4)2 [α-LiCe(WO4)2 and β-LiCe(WO4)2] were successfully synthesized by a citric acid-assisted sol–gel method for the first time. Phase purity and crystallinity were confirmed by powder X-ray diffraction and further characterized by X-ray photoelectron spectroscopy, field emission scanning electron microscopy, Raman, and thermogravimetric–differential thermal analysis measurements. Investigation of the effect of calcination temperature and time indicated the existence of an irreversible structural phase transition from low-temperature (LT) β-phase to high-temperature (HT) α-phase, which is systematically followed by in situ HT powder neutron diffraction (NPD) studies. Rietveld refinements using NPD data revealed that α-LiCe(WO4)2 crystallizes in tetragonal Scheelite-type structure (I41/a), while β-LiCe(WO4)2 crystallizes in triclinic α-LiPr(WO4)2-type structure (P1̅). Furthermore, β-LiCe(WO4)2 undergoes a reconstructive phase transition where WO6 of the β-phase rearranges to WO4 at HT in α-phase and is supported by Raman measurements. Anodic redox activities of these polymorphs were determined by cyclic voltammetry and galvanostatic charge–discharge measurements. Interestingly, β-phase has shown promising results compared with that of α-phase, which is attributed to the easy Li-ion diffusion in between the parallel layers of WO6 and also to the greater structural stability of the β-phase. Thus, our initial understanding on the structure–property of these LiCe(WO4)2 polymorphs provides insights into the design of new insertion anode electrodes for Li-ion batteries.

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NASICON Open Framework Structured Transition Metal Oxides for Lithium Batteries

Cited by 2 publications

References 48 publications

Higher, Stronger, Better…︁ A Review of 5 Volt Cathode Materials for Advanced Lithium‐Ion Batteries

Higher, Stronger, Better…︁ A Review of 5 Volt Cathode Materials for Advanced Lithium‐Ion Batteries

In Situ Neutron Diffraction Studies of LiCe(WO₄)₂ Polymorphs: Phase Transition and Structure–Property Correlation

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NASICON Open Framework Structured Transition Metal Oxides for Lithium Batteries

Cited by 2 publications

References 48 publications

Higher, Stronger, Better…︁ A Review of 5 Volt Cathode Materials for Advanced Lithium‐Ion Batteries

Higher, Stronger, Better…︁ A Review of 5 Volt Cathode Materials for Advanced Lithium‐Ion Batteries

In Situ Neutron Diffraction Studies of LiCe(WO4)2 Polymorphs: Phase Transition and Structure–Property Correlation

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In Situ Neutron Diffraction Studies of LiCe(WO₄)₂ Polymorphs: Phase Transition and Structure–Property Correlation