Global Perturbation Theory Applied to Nonlinear Behavior in the Electrochemical Oxidation of Alcohols: Theory and Experiment

马克·谢尔获得了理论与计算化学项目的资助，研究醇的电化学氧化过程中的理论和实验非线性行为。本文研究的非线性动力学过程是醇类在恒流条件下在酸性溶液中的电化学氧化过程。将解决两个基本问题：1)研究Pt电极上甲醇电氧化过程中时间不稳定性的基本化学步骤；2)描述全局参数空间和相空间非线性动力学问题的新技术的发展。许多实验工作将集中在甲醇电氧化的不稳定性上。初步实验表明，该系统是可靠的。PI将尝试通过理论上推导电位与电流曲线和振荡非线性行为来模拟这种行为。所提出的工作对常温、甲醇-空气燃料电池的商业可行性具有实际意义

Mark Schell is supported by a grant from the Theoretical and Computational Chemistry Program to study the theoretical and experimental nonlinear behavior in electrochemical oxidation of alcohols. The nonlinear kinetic processes to be studied are the electrochemical oxidations of alcohols in acid solution under the condition of constant current. Two fundamental problems will be addressed: 1) the investigation of the fundamental chemical steps underlying temporal instabilities during the elcetro-oxidation of methanol at a Pt electrode; and 2) the development of new techniques for describing nonlinear kinetic problems that are global in parameter space and phase space. Much of the proposed experimental work will center on the instabilities in the electro-oxidation of methanol. Preliminary experimental work has shown this system to be tristable. The PI will attempt to model this behavior by theoretically deriving the potential vs. current curves and oscillatory nonlinear behavior. The proposed work has practical implications with regard to the commercial feasibility of an ambient-temperature, methanol-air, fuel cell