Brownian dynamics simulations (BDSs) are performed to investigate the influence ofinterfacial electrochemical reaction rate on the evolution of coating morphology on circularfibres. The boundary condition for the fluid phase concentration, representingthe balance between the rates of interfacial reaction and transport of ions bybulk diffusion, is incorporated into the BDS by using a reaction probability,Ps. Different modes of growth, ranging from diffusion limited () to reaction controlled , are studied. It is found that, consistent with experimental observations, twodistinct morphological regimes exist, with a dense and uniform structure for (reaction limited deposition (RLD)) and an open and porous one as (diffusion limited deposition (DLD)). An analysis of the fractaldimension indicates that this morphological transition occurs atPs≈0.3. Long-time power-law scalings for the evolution of thickness and roughness (ξ) of the coating exist, i.e. with 0.86≤α≤0.91 and 0.56≤β≤0.93 for 0.01≤Ps≤1. These values are different from those reported for sequential, pseudo-time latticesimulations on planar surfaces, signifying the importance of multiparticle dynamics andsurface curvature. The internal structure and porosity of the coating are characterizedquantitatively by the radial density profile, pair correlation function, two-point probabilityfunction, void distribution function and pore area distribution. For RLD the radial density,ρn, remains nearlyconstant, while for DLD ρn follows a power law, . The coating exhibits short ranged order in the RLD regime while a long range order iscreated by DLD. The void distribution function becomes broader with increasingPs, indicating that in the RLD regime the coating consists of small and spherical pores,while in the DLD regime large and elongated pores are obtained. The pore areadistribution shows narrower distributions in DLD for small pores, while the area of thelargest pore increases by nearly three orders of magnitude as one moves fromthe RLD to the DLD regime. Such morphological diversity could be potentiallyexploited for applications such as percolation, catalysis and surface protection.