High-Pressure Synthesis of Trigonal LiFe<sub>2</sub>F<sub>6</sub>: New Iron Fluoride with Li<sup>+</sup> Tunnels as a Potential Cathode for Lithium-Ion Batteries
High-Pressure Synthesis of Trigonal LiFe<sub>2</sub>F<sub>6</sub>: New Iron Fluoride with Li<sup>+</sup> Tunnels as a Potential Cathode for Lithium-Ion Batteries
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高压合成三方晶系LiFe<sub>2</sub>F<sub>6</sub>:新型氟化铁与Li<sup></sup>隧道作为锂离子电池的潜在阴极
DOI:
10.1021/acs.jpcc.2c01516
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发表时间:
2022
期刊:
影响因子:
3.7
通讯作者:
Yoshiyuki Inaguma
中科院分区:
文献类型:
--
作者:
Kevin Lemoine;Yusuke Nagatani;Jean-Marc Greneche;Yoshiyuki Inaguma
To overcome the challenge of synthesizing new and promising iron fluoride cathode materials, high-pressure synthesis was employed to obtain a new form of LiFe2F6crystallized in the trigonalP321 α-LiMnFeF6structure. Starting from solid fluorine sources, the trigonal structure was obtained for the first time for LiFe2F6at 2.7 GPa, 500 °C, and characterized by synchrotron X-ray diffraction. Rietveld refinements revealed that a new form of LiFe2F6possesses the Na2SiF6-type structure, which would provide enhanced Li+diffusions. A Mössbauer spectrometry analysis was done with a paramagnetic structure obtained at 300 K and a magnetic sextet at 77 K with a 53 T hyperfine field for Fe3+similarly to α-LiMnFeF6. The first electrochemistry tests indicate a good first cycle capacity of ∼150 mAh·g–1with a charge process corresponding to Li+disinsertion, a value doubled when compared to α-LiMnFeF6. These first experimental results show a new synthetic idea to discover materials designed for next generation batteries.
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影响因子:
6.6
作者:
Yayun Zheng;Jinkwang Hwang;K. Matsumoto;R. Hagiwara
通讯作者:
Yayun Zheng;Jinkwang Hwang;K. Matsumoto;R. Hagiwara
影响因子:
4
作者:
Kévin Lemoine;R. Moury;J. Lhoste;A. Hémon-Ribaud;M. Leblanc;J. Greneche;J. Tarascon;V. Maisonneuve
通讯作者:
Kévin Lemoine;R. Moury;J. Lhoste;A. Hémon-Ribaud;M. Leblanc;J. Greneche;J. Tarascon;V. Maisonneuve
影响因子:
3.9
作者:
Peng Liao;R. Dunlap;J. Dahn
通讯作者:
J. Dahn
DOI:
10.1021/acs.inorgchem.1c03617.s002
发表时间:
--
期刊:
--
影响因子:
--
作者:
M. Karppinen;H. Yamauchi;H. Suematsu;K. Isawa;M. Nagano;R. Itti;O. Fukunaga
通讯作者:
O. Fukunaga
影响因子:
3.3
作者:
G. Courbion;C. Jacoboni;R. Pape
通讯作者:
R. Pape