Propagation of Surface-Assisted Side Reactions, A Main Cause for Capacity Fading of Vanadium Oxide Nanograins

Tanguy, François; Gaubicher, Joël; Soudan, Patrick; Bourgeon-Martin, N.; Mauchamp, Vincent; Guyomard, Dominique

doi:10.1149/1.2743821

Cited by 21 publications

(11 citation statements)

References 26 publications

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“…Previous studies of vanadium oxide electrodes in electrolytes containing DMC have indicated significant capacity fade associated with instability of the electrode in such electrolytes [34]. We confirmed that capacity fading occurs with VO 2 (B) in cells containing LP30 electrolyte (LiPF 6 in EC/DMC (1:1, v/v)).…”

Section: Electrochemistrysupporting

confidence: 84%

The synthesis and lithium intercalation electrochemistry of VO2(B) ultra-thin nanowires

Armstrong

Canales

Armstrong

et al. 2008

Journal of Power Sources

106

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Section: Electrochemistrysupporting

confidence: 84%

The synthesis and lithium intercalation electrochemistry of VO2(B) ultra-thin nanowires

Armstrong

Canales

Armstrong

et al. 2008

Journal of Power Sources

106

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“…Second, the amplitude of this decomposition reaction can easily be followed using X-ray photoelectron spectroscopy (XPS) and electrochemistry as surface probes. 42,43 In this paper, the interest of diazonium chemistry for molecular electrografting of oxide powders such as Li 1.1 V 3 O 8 will be demonstrated. Its impact on both chemical and electrochemical reactivities will be presented.…”

Section: Introductionmentioning

confidence: 99%

Lowering interfacial chemical reactivity of oxide materials for lithium batteries. A molecular grafting approach

et al. 2009

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International audienceThis paper proposes a molecular grafting approach as a way to modify the interfacial chemical reactivity of oxide materials, which is detrimental to their long-term energy storage properties. The present study demonstrates that diazonium chemistry offers an efficient path to graft molecules at the surface of a powder oxide material. Indeed, surface derivatization of Li1.1V3O8 nanograins was accomplished by in situ electrografting of a diazonium salt during Li-ion intercalation. The results show that aryl molecules are strongly bonded to the surface forming an organic multilayer the thickness of which can be modulated. Based on TEM, XPS and electrochemical probing of the surface reactivity, the results demonstrate the interest of the proposed surface modifications as a way to tailor both electrochemical and chemical reactivities of oxide electrode materials. Interestingly, charge transfer at the surface of the material is not impeded, while electrolyte decomposition is inhibited. It is anticipated that molecular derivatization of electrode surfaces is a new research direction which will be developed in the field of battery science in the near future, in order to prevent targeted side reactions occurring at different steps of battery manufacturing and use, such as storage, electrode processing, simple contact with electrolyte, and cycling

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“…This fading is mainly associated with the utilization of traditional electrolyte solution composed of ethylene carbonate and dimethyl carbonate. Since vanadium‐based electrodes are having poor compatibility with carbonate based electrolyte solutions, especially linear carbonates . As mentioned, the counter electrode, AC also has to be optimized prior to the fabrication of LIC for the mass balance.…”

Section: Resultsmentioning

confidence: 99%

“…Sincev anadiumbased electrodes are having poor compatibilityw ith carbonate based electrolyte solutions, especiallyl inear carbonates. [49,50] As mentioned, the counter electrode, AC alsoh as to be optimized prior to the fabrication of LIC for the mass balance. Accordingly,t he half-cell Li/AC configuration was assembled and showed an OCV of % 2.9 Vv s. Li.…”

Section: Resultsmentioning

confidence: 99%

Electrochemically Generated γ‐Li_xV₂O₅ as Insertion Host for High‐Energy Li‐Ion Capacitors

Divya

Aravindan

2019

Chemistry An Asian Journal

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In this study,w ee xplored the feasibility of using electrochemically generated g-Li x V 2 O 5 as an insertion-type anode in the lithium-ion capacitor (LIC) with activated carbon (AC) as ac athode.A long with the native form of V 2 O 5 ,t heir carbon composites are also used as the electrode material which is prepared by high-energyb all milling. The electrochemical pre-lithiation strategy is used to generate the desired g-phaseo fV 2 O 5 (g-Li x V 2 O 5 ). Undert he optimized mass loading conditions, the LICs are assembled with g-Li x V 2 O 5 as anode and AC as ac athode in the organic medium. Among the different LICs fabricated,A C/g-Li x V 2 O 5 -BM50 configurationd elivered an energy density of 33.91 Wh kg À1 @0 .22 kW kg À1 with excellent capacity retention characteristics. However,adramatic increase in energy density (43.98 Wh kg À1 @0.28 kW kg À1 )i sn oted after the electrolyte modification with fluoroethylene carbonate.T he high temperature performance of the assembled LIC is also studied and found that g-Li x V 2 O 5 phase can be used as ap otential battery-type component to construct high-performance hybridc harge storage devices.[a] M. L. Divya, Dr.V .A ravindan

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Propagation of Surface-Assisted Side Reactions, A Main Cause for Capacity Fading of Vanadium Oxide Nanograins

Cited by 21 publications

References 26 publications

The synthesis and lithium intercalation electrochemistry of VO2(B) ultra-thin nanowires

The synthesis and lithium intercalation electrochemistry of VO2(B) ultra-thin nanowires

Lowering interfacial chemical reactivity of oxide materials for lithium batteries. A molecular grafting approach

Electrochemically Generated γ‐Li_xV₂O₅ as Insertion Host for High‐Energy Li‐Ion Capacitors

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Propagation of Surface-Assisted Side Reactions, A Main Cause for Capacity Fading of Vanadium Oxide Nanograins

Cited by 21 publications

References 26 publications

The synthesis and lithium intercalation electrochemistry of VO2(B) ultra-thin nanowires

The synthesis and lithium intercalation electrochemistry of VO2(B) ultra-thin nanowires

Lowering interfacial chemical reactivity of oxide materials for lithium batteries. A molecular grafting approach

Electrochemically Generated γ‐LixV2O5 as Insertion Host for High‐Energy Li‐Ion Capacitors

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Product

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About

Electrochemically Generated γ‐Li_xV₂O₅ as Insertion Host for High‐Energy Li‐Ion Capacitors