Impedance spectroscopy of lithium-tin film electrodes

Чуриков, А. В.; Pridatko, K. I.; Ivanishchev, Aleksandr V.; Ivanishcheva, Irina A.; Gamayunova, I. M.; Запсис, К. В.; Sycheva, V. O.

doi:10.1134/s1023193508050078

Cited by 35 publications

(20 citation statements)

References 18 publications

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“…This gives greater flexibility when modeling real spectra. A similar modeled impedance spectrum can be produced by otherwise designed circuit representing the sequential ion transfer into the two sub-layers of intercalation material and comprising two diffusion impedances for simulation of spectrum in the high-to mid-and low-frequency ranges [32][33][34] (Fig. 8b).…”

Section: Comparison Of Electrochemical Responses Of LI 3 V 2 (Po 4 ) mentioning

confidence: 99%

“…The numerical value Table 3 The processing of the results of impedance spectra of the Li 3 V 2 (PO 4 ) 3 electrode using the equivalent circuit (Fig. 8a [26]; b circuit for the modeling of the spectrum of powder dispersed monophase lithium intercalated electrode from [32][33][34] of the last element of EC-the C int -corresponds to the amount of lithium accumulated in the intercalation layer and can be expressed from the experimental E,c dependence at each point on the potential scale (E) in the following manner:…”

Section: Comparison Of Electrochemical Responses Of LI 3 V 2 (Po 4 ) mentioning

confidence: 99%

“…In the Levi and Aurbach work [26], the detailed analysis of models of composite lithium intercalation electrode impedance response is presented. In a number of our papers [32][33][34], the approaches to the analysis of the impedance response of polycrystalline thin layers of single-phase electrodes obtained by applying of the lithium intercalation material to the conductive metal substrate were developed. It is of interest to compare the results of the application of different models to the analysis of Li 3 V 2 (PO 4 ) 3 electrode impedance data.…”

Section: Comparison Of Electrochemical Responses Of LI 3 V 2 (Po 4 ) mentioning

confidence: 99%

“…In the works of our research group, approaches to analysis of impedance data for the monophase polycrystalline thin electrodes [32][33][34] have been developed. The basis of the proposed EC is a model of combined diffusion-migration process of lithium transport in solid electrolytes.…”

Section: Introductionmentioning

confidence: 99%

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Lithium diffusion in Li3V2(PO4)3-based electrodes: a joint analysis of electrochemical impedance, cyclic voltammetry, pulse chronoamperometry, and chronopotentiometry data

Ivanishchev

Чуриков

Ivanishcheva

et al. 2015

Ionics

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In order to establish the mechanism and to determine the parameters of lithium transport in electrodes based on lithium-vanadium phosphate (Li 3 V 2 (PO 4 ) 3 ), the kinetic model was designed and experimentally tested for joint analysis of electrochemical impedance (EIS), cyclic voltammetry ( C V ) , p u l s e c h r o n o a m p e r o m e t r y ( P I T T ) , a n d chronopotentiometry (GITT) data. It comprises the stages of sequential lithium-ion transfer in the surface layer and the bulk of electrode material's particles, including accumulation of lithium in the bulk. Transfer processes at both sites are of diffusion nature and differ significantly, both by temporal (characteristic time, τ) and kinetic (diffusion coefficient, D) constants. PITT data analysis provided the following D values for the predominantly lithiated and delithiated forms of the intercalation material: 10 −9 and 3 × 10 −10 cm 2 s −1 , respectively, for transfer in the bulk and 10 −12 cm 2 s −1 for transfer in the thin surface layer of material's particles. D values extracted from GITT data are in consistency with those obtained from PITT: 3.5-5.8 × 10 −10 and 0.9-5 × 10 −10 cm 2 s −1 (for the current and currentless mode, respectively). The D values obtained from EIS data were 5.5 × 10 −10 cm 2 s −1 for lithiated (at a potential of 3.5 V) and 2.3 × 10 −9 cm 2 s −1 for delithiated (at a potential 4.1 V) forms. CV evaluation gave close results: 3 × 10 −11 cm 2 s −1 for anodic and 3.4 × 10 −11 cm 2 s −1 for cathodic processes, respectively. The use of complex experimental measurement procedure for combined application of the EIS, PITT, and GITT methods allowed to obtain thermodynamic E,c dependence of Li 3 V 2 (PO 4 ) 3 electrode, which is not affected by polarization and heterogeneity of lithium concentration in the intercalate.

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Section: Comparison Of Electrochemical Responses Of LI 3 V 2 (Po 4 ) mentioning

confidence: 99%

Section: Comparison Of Electrochemical Responses Of LI 3 V 2 (Po 4 ) mentioning

confidence: 99%

Section: Comparison Of Electrochemical Responses Of LI 3 V 2 (Po 4 ) mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Lithium diffusion in Li3V2(PO4)3-based electrodes: a joint analysis of electrochemical impedance, cyclic voltammetry, pulse chronoamperometry, and chronopotentiometry data

Ivanishchev

Чуриков

Ivanishcheva

et al. 2015

Ionics

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“…Determination of lithium diffusivity and understanding of lithium diffusion behavior are crucial in controlling the charge-discharge cycling behavior and performance, and rate capability. Various methods have been used to determine the lithium diffusivity of Sn and silicon (Si) alloy anodes, such as galvanostatic intermittent titration technique (GITT) [8], potentiostatic intermittent titration technique (PITT) [9], electrochemical impedance spectroscopy (EIS) [10,11] and cyclic voltammetry (CV) [11][12][13][14]. However, the reported diffusivities of Sn are not consistent with each other being in the range of 10 -8 -10 -7 cm 2 s -1 [1,8], since the measurements were conducted under the condition of no control of interfacial stability to electrolyte.…”

Section: Introductionmentioning

confidence: 99%

Lithium Diffusivity of Tin-based Film Model Electrodes for Lithium-ion Batteries

Hong¹,

Jo²,

Song³

2015

Journal of Electrochemical Science and Technology

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Lithium diffusivity of fluorine-free and -doped tin-nickel (Sn-Ni) film model electrodes with improved interfacial (solid electrolyte interphase (SEI)) stability has been determined, utilizing variable rate cyclic voltammetry (CV). The method for interfacial stabilization comprises fluorine-doping on the electrode together with the use of electrolyte including fluorinated ethylene carbonate (FEC) solvent and trimethyl phosphite additive. It is found that lithium diffusivity of Sn is largely dependent on the fluorine-doping on the Sn-Ni electrode and interfacial stability. Lithium diffusivity of fluorinedoped electrode is one order higher than that of fluorine-free electrode, which is ascribed to the enhanced electrical conductivity and interfacial stabilization effect.

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Transferring Liquid Metal to form a Hybrid Solid Electrolyte via a Wettability‐Tuning Technology for Lithium‐Metal Anodes

Cai

Zhang

et al. 2022

Advanced Materials

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Integrating solid‐state electrolyte (SSE) into Li‐metal anodes has demonstrated great promise to unleash the high energy density of rechargeable Li‐metal batteries. However, fabricating a highly cyclable SSE/Li‐metal anode remains a major challenge because the densification of the SSE is usually incompatible with the reactive Li metal. Here, a liquid‐metal‐derived hybrid solid electrolyte (HSE) is proposed, and a facile transfer technology to construct an artificial HSE on the Li metal is reported. By tuning the wettability of the transfer substrates, electron‐ and ion‐conductive liquid metal is sandwiched between electron‐insulating and ion‐conductive LiF and oxides to form the HSE. The transfer technology renders the HSE continuous, dense, and uniform. The HSE, having high ion transport, electron shut‐off, and mechanical strength, makes the composite anode deliver excellent cyclability for over 4000 h at 0.5 mA cm−2 and 1 mAh cm−2 in a symmetrical cell. When pairing with LiFePO4 and sulfur cathodes, the HSE‐coated Li metal dramatically enhances the performance of full cells. Therefore, this work demonstrates that tuning the interfacial wetting properties provides an alternate approach to build a robust solid electrolyte, which enables highly efficient Li‐metal anodes.

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Impedance spectroscopy of lithium-tin film electrodes

Cited by 35 publications

References 18 publications

Lithium diffusion in Li3V2(PO4)3-based electrodes: a joint analysis of electrochemical impedance, cyclic voltammetry, pulse chronoamperometry, and chronopotentiometry data

Lithium diffusion in Li3V2(PO4)3-based electrodes: a joint analysis of electrochemical impedance, cyclic voltammetry, pulse chronoamperometry, and chronopotentiometry data

Lithium Diffusivity of Tin-based Film Model Electrodes for Lithium-ion Batteries

Transferring Liquid Metal to form a Hybrid Solid Electrolyte via a Wettability‐Tuning Technology for Lithium‐Metal Anodes

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