A study on lithium transport through fractal Li 1−δ CoO 2 film electrode by analysis of current transient based upon fractal theory

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

“…Also, they have developed notions of the interparticle interactions in the structure of intercalation materials based on lattice gas model, which allowed them to theoretically explain the shape of the concentration dependence of the lithium diffusion coefficient. Pyun et al [65][66][67][68][69][70][71][72][73][74][75][76] used numerical methods to solve the diffusion equations with regard to the interpretation of PITT and GITT data. Similar to the abovementioned researchers, this team of authors in their theoretical development took into account the influence of surface inhibition to the ion transport, denoting this phenomenon by the term Bcellimpedance control.^Deiss et al [77] took into account the structure of powder electrode and the geometry of the particles in the numerical solution of diffusion task in relation to the LiMn 2 O 4 electrode.…”

The cell-impedance-controlled lithium transport through LiMn2O4 film electrode with fractal surface by analyses of ac-impedance spectra, potentiostatic current transient and linear sweep voltammogram

“…In the previous work from our laboratory [14], we suggested that for the large potential step and the small amount of lithium transferred during lithium transport, mechanism in lithium transport changes from the cell-impedance-controlled lithium transport to diffusion-controlled lithium transport, which implies that the transport mechanism is not fixed at the specific electrode system, but it depends even at any electrode system upon the combination of the external parameters such as the applied potential step, the amount of lithium transferred during lithium transport and the internal cell resistance R int of the electrode.…”

“…In addition, recently, from the kinetic study on lithium transport through Li 1−δ CoO 2 electrode [14], it has been suggested that for the large potential step and the small amount of lithium transferred during lithium transport, mechanism in lithium transport changes from the cell-impedance-controlled lithium transport to diffusion-controlled lithium transport, and transport mechanism depends upon the external parameters such as the internal cell resistance of the electrode, the applied potential step and the amount of lithium transferred during lithium transport.…”

“…Especially, mass transport towards and from the rough interface in the electrochemical system has extensively been studied by potentiostatic current transient technique [2,7,[11][12][13][14], linear sweep/cyclic voltammetry [2,7,9,15,16], and ac-impedance spectroscopy [17][18][19]. It is well known that when mass transport is purely controlled by the diffusion reaction in the electrode or electrolyte, the electrochemical responses at the rough interface obey the generalised forms [7] of the Cottrell relation, the Randles-Sevčik relation and the Warburg relation.…”

“…However, it has been reported that lithium transport through transition metal oxides and carbonaceous materials [14,[20][21][22][23] is limited by the internal cell resistance R int at the electrolyte/electrode interface, and then is coupled with the lithium diffusion in the electrode. Moreover, it has also been concluded [24][25][26][27] that hydrogen transport through the hydride-forming electrodes such as Pd and metal hydrides proceeds under the condition where hydrogen diffusion in the electrode is kinetically mixed with the charge-transfer reaction at the electrode/electrolyte interface.…”