However, another proposed mechanism of diffusion loss, which involves structural collapse and the loss of porosity in the CCLs due to carbon corrosion did not occur in the present study.
Moreover, the kinetic parameter studies demonstrate that the Sudan I electro-oxidation at the AuNPs/RGO electrode is a diffusion-controlled process which involves two-electron and two-proton transfer.
A new model which involves both bulk diffusion process and surface reaction process was developed.
A model which involves both bulk diffusion process and surface reaction process has been developed for describing the growth behaviour of nanoparticles.
Ab initio MD simulations were subsequently used and uncovered a new path for the diffusion of hydroxyl across the surface which involves a sequence of proton transfer reactions.
In this paper, we consider a multi-term variable-order fractional diffusion equation on a finite domain, which involves the Caputo variable-order time fractional derivative of order (alpha x,t) in 0,1) ) and the Riesz variable-order space fractional derivatives of order (beta x,t) in (0,1)), (gamma x,t in(1,2)).
The diffusion reaction functional, which involves both molecular and convective diffusion, describes the general case of three-dimensional steady-state diffusion of a single component with a chemical reaction of arbitrary order and complexity while the velocity and temperature functionals cover viscosity, pressure, convection and heat generation terms.
For mathematical description of stress induced diffusion process the equation of barodiffusion is used which involves concentration dependant barodiffusion coefficient.
Adiabatic acceleration, which involves the process of radial diffusion, is referred to as an external-source acceleration (Hudson et al. 2001; Elkington et al. 2003; Shprits et al. 2008), and local acceleration, which involves wave particle interactions, is known as an internal-source acceleration (Miyoshi et al. 2003; Thorne et al. 2013; Reeves et al. 2013).
(i) The electroreduction of the primary PbSO4 layer which involves mainly an instantaneous nucleation and three-dimensional growth mechanism under diffusion control.
