Silicate cathodes for lithium batteries: alternatives to phosphates?

Islam, M. Saïful; Dominko, Robert; Masquelier, Christian; Sirisopanaporn, Chutchamon; Armstrong, A. Robert; Bruce, Peter G.

doi:10.1039/c1jm10312a

Cited by 320 publications

(314 citation statements)

References 48 publications

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“…A new family of cathode materials have been presented recently based on the tetrahedral orthosilicates which, theoretically, are capable of a two electron intercalation process involving the M 4+/3+ and M 3+/2+ redox couples [492,493]. The dual-electron process may therefore yield cathodes with capacities exceeding 300 mA h g -1 , while the relative strength of the Si-O bond may impart a necessary structural stability.…”

Section: Transition Metal Silicates (Li2msio4)mentioning

confidence: 99%

Evaluating the performance of nanostructured materials as lithium-ion battery electrodes

et al. 2013

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Access to the full text of the published version may require a subscription. Rights © Tsinghua University Press and Springer-Verlag Berlin ABSTRACTThe performance of the lithium-ion cell is heavily dependent on the ability of the host electrodes to accommodate and release Li + ions from the local structure. While the choice of electrode materials may define parameters such as cell potential and capacity, the process of intercalation may be physically limited by the rate of solid-state Li + diffusion. Increased diffusion rates in lithium-ion electrodes may be achieved through a reduction in the diffusion path, accomplished by a scaling of the respective electrode dimensions.In addition, some electrodes may undergo large volume changes associated with charging and discharging, the strain of which, may be better accommodated through nanostructuring. Failure of the host to accommodate such volume changes may lead to pulverisation of the local structure and a rapid loss of capacity. In this review article, we seek to highlight a number of significant gains in the development of nanostructured lithium-ion battery architectures (both anode and cathode), as drivers of potential next-generation electrochemical energy storage devices.

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Section: Transition Metal Silicates (Li2msio4)mentioning

confidence: 99%

Evaluating the performance of nanostructured materials as lithium-ion battery electrodes

et al. 2013

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“…29 They also found the tetrahedral structure to stabilize VO 4 4-. Up to date, experimental studies of V doping in shows phase separation into V and Fe containing spinel phases at higher doping levels of V in Li 2 FeSiO 4 , and a general decay of the electrochemical properties. 30 Zhang et al substituted up to 7 mol % V on the Fe-site of Li 2 FeSiO 4 and found a strong increase of electrochemical properties for 5 mol % V substitution.…”

Section: Introductionmentioning

confidence: 99%

“…Up to date, experimental studies of V doping in shows phase separation into V and Fe containing spinel phases at higher doping levels of V in Li 2 FeSiO 4 , and a general decay of the electrochemical properties. 30 Zhang et al substituted up to 7 mol % V on the Fe-site of Li 2 FeSiO 4 and found a strong increase of electrochemical properties for 5 mol % V substitution. 31 At the same time their XRD data shows that almost all major Li 2 FeSiO 4 diffraction peaks diminish at increased V concentrations.…”

Section: Introductionmentioning

confidence: 99%

“…1 These polyanion compounds consist of abundant elements and allow in theory the reversible exchange of 2 Li ions per formula unit. [2][3][4] Li 2 MnSiO 4 is an interesting candidate, since Mn can exist in different oxidation states (II, III, IV) within the potential window of a commercial Li-ion battery, thus gives rise to a high theoretical capacity of 333 mAhg -1 for the exchange of 2 Li per formula unit. 5 Li 2 MnSiO 4 adopts β and γ Li 3 PO 4 structures where all cations are tetrahedrally coordinated.…”

Section: Introductionmentioning

confidence: 99%

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Vanadium Substitution in Li₂MnSiO₄/C as Positive Electrode for Li Ion Batteries

Wagner¹,

Vullum

Nord³

et al. 2016

J. Phys. Chem. C

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“…[1][2][3][4] In these silicates, oxide ions form a pseudo-hexagonal closed packed (hcp) structure. The cations occupy a half of its tetrahedral sites and show several kinds of ordered arrangements depending on the transition metals species and the heat treatments during the sample preparation.…”

Section: Introductionmentioning

confidence: 99%

Structural Phase Transition of Li<sub>2</sub>MnSiO<sub>4</sub>

Nakayama

Itoyama

Fujiwara

et al. 2012

Trans. Mat. Res. Soc. Japan

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The orthorhombic Pmnb phase of Li2MnSiO4 has been prepared by solid state reaction of Li2CO3, Mn(CH3COO)2⋅4H2O, and highly dispersed SiO2 at 800 °C and the subsequent slow cooling in Ar gas stream. The crystal structure was refined by the Rietveld method based on the model structure without disorder in the site occupancies, although some anomaly was observed for Mn sites. The DTA curve shows peaks at around 680 and 770 °C on heating and at around 510 °C on cooling indicating a reversible structural phase transition. From the in-situ XRD patterns at high temperature, the first order phase transition from Pmnb to a distorted orthorhombic wurzite-type structure with the random arrangement of Li, Si, and Mn.keywords: order-disorder, wurzite-type structure, DTA, high temperature powder XRD INTRODUCTIONLithium transition metal silicates, Li2MSiO4 (M: Mn, Fe, Co), have been investigated extensively in this decade as a new class of positive electrode materials for lithium ion batteries. 1-4) In these silicates, oxide ions form a pseudo-hexagonal closed packed (hcp) structure. The cations occupy a half of its tetrahedral sites and show several kinds of ordered arrangements depending on the transition metals species and the heat treatments during the sample preparation. 5,6) The homogeneity of the ordered structure may have significant effect on the electrode properties. Several investigations on the details of polymorphism have been reported [7][8][9][10][11][12][13] , mainly for the hydro-thermally prepared and heat-treated samples. However, the phase relations among polymorphs and the microstructures are still unclear. The mutual phase relationships above polymorphs are of interests to obtain the single-phase materials and to clarify the electrochemical properties. In this paper, the structural phase transition of Li2MnSiO4 was investigated using TG-DTA and powder XRD at high temperature.

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Silicate cathodes for lithium batteries: alternatives to phosphates?

Cited by 320 publications

References 48 publications

Evaluating the performance of nanostructured materials as lithium-ion battery electrodes

Evaluating the performance of nanostructured materials as lithium-ion battery electrodes

Vanadium Substitution in Li₂MnSiO₄/C as Positive Electrode for Li Ion Batteries

Structural Phase Transition of Li<sub>2</sub>MnSiO<sub>4</sub>

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Silicate cathodes for lithium batteries: alternatives to phosphates?

Cited by 320 publications

References 48 publications

Evaluating the performance of nanostructured materials as lithium-ion battery electrodes

Evaluating the performance of nanostructured materials as lithium-ion battery electrodes

Vanadium Substitution in Li2MnSiO4/C as Positive Electrode for Li Ion Batteries

Structural Phase Transition of Li<sub>2</sub>MnSiO<sub>4</sub>

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Vanadium Substitution in Li₂MnSiO₄/C as Positive Electrode for Li Ion Batteries