Increased electron transfer kinetics and thermally treated graphite stability through improved tunneling paths

摘要: Aging of graphite-based materials results in slower heterogeneous electron transfer (HET) kinetics and limits their conducting catalytic performance. A thermal treatment protocol reportedly maintained a high HET graphite by at least nine weeks. The present report investigates the consequences such increases on stabilities. Raman 2D peak evolution, potential windows, EIS, optical AFM, chronoamperometry potentiodynamic polarization studies were employed to investigate electrochemical, structural corrosion stabilities mechanisms pristine thermally treated as they relate its kinetics. Structure-induced electronic changes are suggested trigger improved tunneling paths through interfaces from bulk layer. This improves sustains orders magnitude graphite. Except for fibers, increased without compromises In most instances, these properties over Thermal transforms into well-ordered lattices. AFM images show visual indifference between However, structures resultant electrochemistry different. Despite minimal energy differences both structures, large thermodynamic barrier hinders reversal pristine-like state.