Generalized Butler-Volmer relation on a curved electrode surface under the action of stress

• Published in: Science China. Physics, mechanics & astronomy Vol. 59; no. 11; pp. 44 - 50
• Main Author: Yang, FuQian
• Format: Journal Article
• Language: English
• Published: Beijing Science China Press 01.11.2016; Springer Nature B.V
• Subjects: Astronomy; Circuits; Classical and Continuum Physics; Electrodes; Observations and Techniques; Physics; Physics and Astronomy; 局部应力; 广义; 应力作用; 弯曲; 曲率半径; 激活过程; 电极反应; 电极表面; stress; overpotential; Butler-Volmer relationship
• ISSN: 1674-7348; 1869-1927
• DOI: 10.1007/s11433-016-0198-6

According to the principle of thermal activation process, the energy state of a material under the action of stress is a function of local stress. A generalized Butler-Volmer relationship for the electrode reaction on the surface of a curved electrode is derived,which takes account of the effects of local stress and the radius of mean curvature. From this relationship, the overpotential is found to be proportional to hydrostatic stress and the activation volume under the condition of open circuit. The conditions for the deposition of the material made solely from solute atoms and the formation of surface pits and porous structures are obtained,using the generalized Butler-Volmer relationship.