Potentiostatic and Galvanostatic Intermittent Titration Techniques

Levi, Mikhael D.; Aurbach, Doron

doi:10.1002/0471266965.com125

Cited by 19 publications

(35 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For K 29 LiC 240 the energy gain due to intercalation is À0.16 eV per atom. This ratio is already close to the experimentally observed kinetic transition point at K 33 Li system (Fig. S4 †).…”

Section: Theoretical Mechanistic Study Of LI + and K + Co-intercalationsupporting

confidence: 88%

“…Using CV analysis rooted in our Nernstian ndings, we show that co-intercalation displays a single group of waves with two distinct behaviors for Li + -rich and K + -rich regions. We further determined their apparent alkali ion diffusion coefficients determined via potentiostatic intermittent titration technique (PITT), 33 which were a function of Li + content. We further studied the Li + and K + co-intercalation mechanism using periodic density functional theory (DFT) calculations.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Nernstian Li⁺ intercalation into few-layer graphene and its use for the determination of K⁺ co-intercalation processes

et al. 2021

View full text Add to dashboard Cite

show abstract

Section: Theoretical Mechanistic Study Of LI + and K + Co-intercalationsupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Nernstian Li⁺ intercalation into few-layer graphene and its use for the determination of K⁺ co-intercalation processes

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Differences in

L i^{+}

diffusion coefficients determined by GITT and EIS characterisations might originate from inhomogeneities intrinsic to the electrodes material. Disparities that are typically observed in practice with regard to the shape and size of the electrodes active material particles, may affect the diffusion time constant associated to both techniques and therefrom lead to disparities in their diffusion coefficient results [47]. …”

Section: Resultsmentioning

confidence: 99%

On the Ageing of High Energy Lithium-Ion Batteries—Comprehensive Electrochemical Diffusivity Studies of Harvested Nickel Manganese Cobalt Electrodes

et al. 2018

View full text Add to dashboard Cite

This paper examines the impact of the characterisation technique considered for the determination of the Li+ solid state diffusion coefficient in uncycled as in cycled Nickel Manganese Cobalt oxide (NMC) electrodes. As major characterisation techniques, Cyclic Voltammetry (CV), Galvanostatic Intermittent Titration Technique (GITT) and Electrochemical Impedance Spectroscopy (EIS) were systematically investigated. Li+ diffusion coefficients during the lithiation process of the uncycled and cycled electrodes determined by CV at 3.71 V are shown to be equal to 3.48×10−10 cm2·s−1 and 1.56×10−10 cm2·s−1 , respectively. The dependency of the Li+ diffusion with the lithium content in the electrodes is further studied in this paper with GITT and EIS. Diffusion coefficients calculated by GITT and EIS characterisations are shown to be in the range between 1.76×10−15 cm2·s−1 and 4.06×10−12 cm2·s−1, while demonstrating the same decreasing trend with the lithiation process of the electrodes. For both electrode types, diffusion coefficients calculated by CV show greater values compared to those determined by GITT and EIS. With ageing, CV and EIS techniques lead to diffusion coefficients in the electrodes at 3.71 V that are decreasing, in contrast to GITT for which results indicate increasing diffusion coefficient. After long-term cycling, ratios of the diffusion coefficients determined by GITT compared to CV become more significant with an increase about 1 order of magnitude, while no significant variation is seen between the diffusion coefficients calculated from EIS in comparison to CV.

show abstract

“…By analyzing the current transients, information on the nearequilibrium transport properties can be obtained. 32 Analytical solutions to the current transient are available for simple cases, for example based on assumptions of only semi-infinite diffusion (i.e. Cottrell equation), 33,34 or finite-length diffusion with or without inclusion finite reaction kinetics.…”

Section: Determination Of Kinetic Parameters By Pitt-mentioning

confidence: 99%

Investigation of the Li-Ion Insertion Mechanism for Amorphous and Anatase TiO₂Thin-Films

Moitzheim

Gendt

Vereecken

2019

J. Electrochem. Soc.

View full text Add to dashboard Cite

Titania is considered an interesting anode candidate for Li + -ion batteries, as it offers a high theoretical capacity (1280 mAh cm −3 or 336 mAh g −1 ) and long term cycling stability. Unfortunately, the most commonly investigated anatase structure never reaches the theoretical capacity at practical charging rates (i.e. above 1 C). In this work, we compare amorphous (am-TiO 2 ) to anatase TiO 2 thin-films, and investigate the exceptional performance of am-TiO 2 as Li + -ion insertion electrode. An in-depth electrochemical characterization using cyclic voltammetry (CV), constant current lithiation and delithiation, and potentiostatic intermittent titration technique (PITT) is performed. From CV, the insertion and extraction kinetics of am-TiO 2 is found to be unrestricted by diffusion, contrary to anatase. Based on our combined electrochemical results, two different mechanisms are formulated for anatase and am-TiO 2 . Whereas anatase is filled from the "top-down", with a buildup of Li near the electrode/electrolyte interface, am-TiO 2 shows a "bottom-up" filling mechanism. This discrepancy is ascribed to the difference in diffusion coefficient measured for am-TiO 2 and anatase. This work highlights the differences of Li-ion insertion into amorphous TiO 2 compared to anatase, and gives guidance on material development for high capacity and fast charging electrodes.

show abstract

Potentiostatic and Galvanostatic Intermittent Titration Techniques

Cited by 19 publications

References 36 publications

Nernstian Li⁺ intercalation into few-layer graphene and its use for the determination of K⁺ co-intercalation processes

Nernstian Li⁺ intercalation into few-layer graphene and its use for the determination of K⁺ co-intercalation processes

On the Ageing of High Energy Lithium-Ion Batteries—Comprehensive Electrochemical Diffusivity Studies of Harvested Nickel Manganese Cobalt Electrodes

Investigation of the Li-Ion Insertion Mechanism for Amorphous and Anatase TiO₂Thin-Films

Contact Info

Product

Resources

About

Potentiostatic and Galvanostatic Intermittent Titration Techniques

Cited by 19 publications

References 36 publications

Nernstian Li+ intercalation into few-layer graphene and its use for the determination of K+ co-intercalation processes

Nernstian Li+ intercalation into few-layer graphene and its use for the determination of K+ co-intercalation processes

On the Ageing of High Energy Lithium-Ion Batteries—Comprehensive Electrochemical Diffusivity Studies of Harvested Nickel Manganese Cobalt Electrodes

Investigation of the Li-Ion Insertion Mechanism for Amorphous and Anatase TiO2Thin-Films

Contact Info

Product

Resources

About

Nernstian Li⁺ intercalation into few-layer graphene and its use for the determination of K⁺ co-intercalation processes

Nernstian Li⁺ intercalation into few-layer graphene and its use for the determination of K⁺ co-intercalation processes

Investigation of the Li-Ion Insertion Mechanism for Amorphous and Anatase TiO₂Thin-Films