Solving the Structure of Li Ion Battery Materials with Precession Electron Diffraction: Application to Li<sub>2</sub>CoPO<sub>4</sub>F

Hadermann, Joke; Abakumov, Artem M.; Turner, Stuart; Hafideddine, Zainab; Khasanova, Nellie R.; Antipov, Evgeny V.; Tendeloo, Gustaaf Van

doi:10.1021/cm201257b

Cited by 55 publications

(49 citation statements)

References 27 publications

(46 reference statements)

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“…3 With two lithium ions available, it has two possible electrochemical redox potentials of 4.8 (oxidation of Co 2+ /Co 3+ ) and 5.2 V (oxidation of Co 3+ /Co 4+ ) against Li/Li + . The theoretical maximum capacity amounts to 286 mAhg −1 assuming a total delithiation from Li 2 CoPO 4 F to CoPO 4 F. 4 However, there has been no evidence for an electrochemical extraction of more than one stoichiometric equivalent of Li + per formula unit.…”

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confidence: 99%

A Two-Step Synthesis for Li₂CoPO₄F as High-Voltage Cathode Material

Schoiber

Berger

Yada

et al. 2015

J. Electrochem. Soc.

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Li 2 CoPO 4 F has been synthesized via a novel two-step reaction from a solvothermally prepared precursor mixture of LiCoPO 4 and LiF. Solvent influences were monitored by powder X-ray diffraction and the reaction conditions for the conversion of the precursor mixture to Li 2 CoPO 4 F were optimized. In addition, the obtained materials were characterized before and after carbon-coating by SEM, N 2 sorption, elemental and thermogravimetric analysis. The electrochemical performance of the products as high-voltage cathode materials in a coin-cell was tested, and long term stability over 50 charge/discharge cycles could be demonstrated.

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confidence: 99%

A Two-Step Synthesis for Li₂CoPO₄F as High-Voltage Cathode Material

Schoiber

Berger

Yada

et al. 2015

J. Electrochem. Soc.

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“…Reference diffraction pattern of Li 2 CoPO 4 F is obtained from simulation based on CIF document reported by Hadermann et al[15] using diamond 3.1 software.…”

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Sol–gel synthesis of Li2CoPO4F/C nanocomposite as a high power cathode material for lithium ion batteries

Gong

Shi

et al. 2012

Journal of Power Sources

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“…The Co is in 4a and 4b sites, the P in two sets of 4c sites, the F in two sets of 4c sites, and the O in four sets of 4c and two sets of 8d sites6. The cross linked structure forms an opened 3D framework, permitting Li ions to be inserted and extracted from multiple directions151617. The XRD pattern of the synthesized Li 2 CoPO 4 F sample shown in Fig.…”

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confidence: 99%

Enhancing the energy density of safer Li-ion batteries by combining high-voltage lithium cobalt fluorophosphate cathodes and nanostructured titania anodes

López

McDonald

et al. 2016

Sci Rep

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Recently, Li-ion batteries have been heavily scrutinized because of the apparent incompatibility between safety and high energy density. This work report a high voltage full battery made with TiO2/Li3PO4/Li2CoPO4F. The Li2CoPO4F cathode and TiO2 anode materials are synthesized by a sol–gel and anodization methods, respectively. X-ray diffraction (XRD) analysis confirmed that Li2CoPO4F is well-crystallized in orthorhombic crystal structure with Pnma space group. The Li3PO4-coated anode was successfully deposited as shown by the (011) lattice fringes of anatase TiO2 and (200) of γ-Li3PO4, as detected by HRTEM. The charge profile of Li2CoPO4F versus lithium shows a plateau at 5.0 V, revealing its importance as potentially high-voltage cathode and could perfectly fit with the plateau of anatase anode (1.8–1.9 V). The full cell made with TiO2/Li3PO4/Li2CoPO4F delivered an initial reversible capacity of 150 mA h g−1 at C rate with good cyclic performance at an average potential of 3.1–3.2 V. Thus, the full cell provides an energy density of 472 W h kg−1. This full battery behaves better than TiO2/Li2CoPO4F. The introduction of Li3PO4 as buffer layer is expected to help the cyclability of the electrodes as it allows a rapid Li-ion transport.

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Solving the Structure of Li Ion Battery Materials with Precession Electron Diffraction: Application to Li₂CoPO₄F

Cited by 55 publications

References 27 publications

A Two-Step Synthesis for Li₂CoPO₄F as High-Voltage Cathode Material

A Two-Step Synthesis for Li₂CoPO₄F as High-Voltage Cathode Material

Sol–gel synthesis of Li2CoPO4F/C nanocomposite as a high power cathode material for lithium ion batteries

Enhancing the energy density of safer Li-ion batteries by combining high-voltage lithium cobalt fluorophosphate cathodes and nanostructured titania anodes

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Solving the Structure of Li Ion Battery Materials with Precession Electron Diffraction: Application to Li2CoPO4F

Cited by 55 publications

References 27 publications

A Two-Step Synthesis for Li2CoPO4F as High-Voltage Cathode Material

A Two-Step Synthesis for Li2CoPO4F as High-Voltage Cathode Material

Sol–gel synthesis of Li2CoPO4F/C nanocomposite as a high power cathode material for lithium ion batteries

Enhancing the energy density of safer Li-ion batteries by combining high-voltage lithium cobalt fluorophosphate cathodes and nanostructured titania anodes

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Solving the Structure of Li Ion Battery Materials with Precession Electron Diffraction: Application to Li₂CoPO₄F

A Two-Step Synthesis for Li₂CoPO₄F as High-Voltage Cathode Material

A Two-Step Synthesis for Li₂CoPO₄F as High-Voltage Cathode Material