By considering the random nucleation of SRL phase-transformation waves, the theory predicts a very different picture of charge/discharge dynamics from the classical diffusion-limited model, which could affect the interpretation of experimental data for LiFePO4.
Non-isothermal experiments were carried out to obtain the kinetic model of OC reduction by char, founding that the activation energy of redox reaction gradually increases with conversion ratio and the kinetic mechanism can be described by the random nucleation and subsequent growth model and chemical reaction model respectively before and after α passes 0.5.
The phenomenon of random nucleation is justified based on the crystal structure of NF-MH, which showed presence of water molecules in an isolated manner, prohibiting directional dehydration.
Contrarily, in case of random nucleation, kinetic factors influence both the nucleation mechanism and the growth process, strongly modulating the island density and the capture zone area.
In the random nucleation simulations, one end of the new MT was positioned at a random position inside the box.
HSM showed initiation of dehydration with random nucleation, and nuclei coalesced with the progress of dehydration reaction.
Avrami's model describes the kinetics of phase transformation under the assumption of spatially random nucleation.
At a intermediate temperature of 650°C, random nucleation is observed.
Wang et al. [3] and Li et al.[2] found that random nucleation and growth was predominant during the main pyrolysis of algae, which is described by the Amirami-Erofeev function.
A mathematical model, which assumes random nucleation and crystal growth, was designed to simulate the crystallization process in the non-uniform temperature field induced by laser.
