SnO2 negative electrode for lithium ion cell: in situ Mössbauer investigation of chemical changes upon discharge

Sandu, I.; Brousse, Thierry; Schleich, D. M.; Danot, M.

doi:10.1016/j.jssc.2004.06.032

Cited by 47 publications

(68 citation statements)

References 14 publications

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“…Assuming the possible existence of such a ternary compound, the reaction mechanism could be described as reaction mechanisms 1 and 2 were also found for tin oxide materials, as thoroughly discussed in the existing literature. [32][33][34][35][36] Using various advanced characterization techniques ͑nuclear magnetic resonance, Mössbauer spectroscopy, and extended X-ray absorption fine structure͒, it was shown that oxygen partly reversibly participates during the insertion reaction. Therefore, one can very well imagine that the reaction mechanism of tin nitride may differ from the usually accepted reaction scheme.…”

Section: Electrochemical Characterization Of Tin Nitride Thin Films-mentioning

confidence: 99%

Tin Nitride Thin Films as Negative Electrode Material for Lithium-Ion Solid-State Batteries

Baggetto¹,

Verhaegh

Niessen

et al. 2010

J. Electrochem. Soc.

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Tin nitride thin films have been reported as promising negative electrode materials for lithium-ion solid-state microbatteries. However, the reaction mechanism of this material has not been thoroughly investigated in the literature. To that purpose, a detailed electrochemical investigation of radio-frequency-sputtered tin nitride electrodes of two compositions (1:1 and 3:4) is presented for several layer thicknesses. The as-prepared thin films have been characterized by Rutherford backscattering spectrometry, inductively coupled plasma optical emission spectrometry, scanning electron microscopy, X-ray diffraction, and transmission electron microscopy. The electrochemical results point out that the conversion mechanism of tin nitride most probably differs from the conversion mechanism usually observed for other oxide and nitride conversion electrode materials. The electrochemical data show that more than 6 Li per Sn atom can be reversibly exchanged by this material, whereas only about 4 are expected. Moreover, the electrochemical performance of the material is discussed, such as electrode cycle life, and a method for improving the cycle life is presented. Finally, thicker films have been characterized by Mössbauer spectroscopy. This technique opens a new route toward determining the conversion reaction mechanism of this promising electrode material.

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Section: Electrochemical Characterization Of Tin Nitride Thin Films-mentioning

confidence: 99%

Tin Nitride Thin Films as Negative Electrode Material for Lithium-Ion Solid-State Batteries

Baggetto¹,

Verhaegh

Niessen

et al. 2010

J. Electrochem. Soc.

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“…The detailed investigation of the electrochemical reaction of lithium with SnO 2 was previously reported by using in-situ 119 Sn Mçssbauer. Sandu et al, [10] found a first step in which lithium was intercalated into the SnO 2 host structure. In a second step, tin dioxide was reduced into "unusual" tin species (possibly "exotic" forms of Sn II or Sn(0) [10] ).…”

Section: Resultsmentioning

confidence: 99%

“…Thus, the SnO 2 electrode appeared to be far from equilibrium during continuous discharge even at low rate. [10] In contrast, the lithiation of tin monoxide yielded to "Li 2.3 SnO" that was composed of b-Sn and Li-Sn alloy and no SnO was present. [11] We have registered ex-situ…”

Section: Resultsmentioning

confidence: 99%

“…For pure lithium-tin alloys, according to Dunlap et [11] For pure SnO 2 , Sandu et al, found that the contribution of the mean alloy signal follows a tendency with the discharge depth that is similar to the pure lithium-tin alloy, but the final isomer shift found at the end of the discharge was different. [10] For tin dioxide electrodes, we observe that the mean centre shift increases with the discharge depth ( Figure 6) indicating that the 5 s electron density at the tin atoms increases as a consequence of the reduction process. For cobalt-free SnO 2 the mean centre shift remains below 1.75 mm s À1 , which indicates that a pure Li 22 Sn 5 composition is not reached most probably due to residual tin-oxygen interactions ( Figure 6).…”

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confidence: 87%

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Unfolding Tin–Cobalt Interactions in Oxide‐Based Composite Electrodes for Li‐Ion Batteries by Mössbauer Spectroscopy

Alcántara¹,

Ortiz²

2006

ChemPhysChem

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With a view to the development of new composite electrodes for lithium-ion batteries with electroactive tin and cobalt, Co-doped tin dioxide samples are studied. The role played by oxygen and cobalt atoms in the electrochemical behavior of tin-based electrodes for Li-ion batteries is examined by the powerful and selective (119)Sn Mössbauer spectroscopy. For the discharged electrodes, the oxygen atoms in the lithia matrix tend to destabilize the Sn(0) atoms. In contrast, the presence of cobalt atoms helps to form a matrix that stabilizes the reduced tin atoms. Cobalt-tin interactions in electrochemical reduced Co(x)Sn(1-x)O(2) electrodes are deduced from the electrochemical and Mössbauer results.

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“…Sn-based intermetallic compounds and their oxides 9,10) possess higher capacity, and numerous relevant reports have investigated Sn-Cu, [1][2][3][4] Sn-Mo, 11) Sn-P, 12) Sn-Ni, [13][14][15] Sn-Ca, 16) Sn-Sb, 17) Sn-S, 18) Li-Sn, 5) Ce-Sn, 7) and Sn-O. 9,10) Notably, most of the above Sn-based anode materials were prepared by mechanical alloying (ball milling), 4,13,19,20) sintering, 4,14) and chemical reduction 8,11,17,21,22) which tend to cause inhomogeneity and microsegregation. In this study, the Sn-Cu alloy was prepared by refining in a vacuum at a higher cooling rate.…”

Section: Introductionmentioning

confidence: 99%

Microstructural Characteristics and the Charge-Discharge Characteristics of Sn-Cu Thin Film Materials

Hung

Lui

et al. 2009

Mater. Trans.

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SnO2 negative electrode for lithium ion cell: in situ Mössbauer investigation of chemical changes upon discharge

Cited by 47 publications

References 14 publications

Tin Nitride Thin Films as Negative Electrode Material for Lithium-Ion Solid-State Batteries

Tin Nitride Thin Films as Negative Electrode Material for Lithium-Ion Solid-State Batteries

Unfolding Tin–Cobalt Interactions in Oxide‐Based Composite Electrodes for Li‐Ion Batteries by Mössbauer Spectroscopy

Microstructural Characteristics and the Charge-Discharge Characteristics of Sn-Cu Thin Film Materials

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