The Study and Application of Nonlinear (Photo)Electrochemical Reactions

非线性（光）电化学反应的研究与应用

• 批准号: RGPIN-2018-05534
• 负责人: Wang, Jichang
• 金额: $ 2.11万
• 依托单位: University of Windsor
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=683287
• 关键词: Study; Application; Nonlinear; Photo; Electrochemical

Nonlinear behavior occurs everywhere in Nature, including processes such as metal corrosion, spiral wave activity in cardiac tissue, avalanches, stock market fluctuation, traffic flow behavior, etc. In the past three decades, physicists, biologists and mathematicians have relied on chemical model systems to investigate these intriguing behaviors. Further advancement of our knowledge of nonlinear phenomena, which is of importance from points of view of both fundamental and applied science, will be significantly affected by the discovery of new chemical oscillators. This research program focuses on the development of new (photo)electrochemical oscillators and their applications in fuel cells and the synthesis of novel nanomaterials.*** The proposed systems involve electroreduction of oxygen, which represents a key process in fuel cells. The adoption of fuel cells, which have been regarded as an environmentally friendly technology for energy storage and production, for a wide range of uses has been severely hindered by the high cost of electrode materials as well as the poor understanding of chemical processes at the electrolyte/electrode interface. The study of oscillatory behavior and its sensitive response to external perturbations will offer us a unique set of parameters for gaining insights into the underlying reaction mechanisms. The new mechanistic information will in turn provide critical guidance for developing more efficient fuel cells. *** Influences of reaction kinetics on the morphologies and microstructures of nanomaterials are well documented in literature, yet few studies have been done on oscillatory systems. The proposed research on oscillatory electrochemical dissolutions of metals and the electrochemical oxidations of sulfur-containing compounds are expected to lead to the development of a new class of metal chalcogenides photocatalysts. The formation of nanomaterials results in feedback to their underlying nonlinear dynamics, providing unique opportunities for discovering new chemical phenomena. In the long term, this program will lead to a synergy between nonlinear science and materials science.

非线性行为在自然界中无处不在，包括金属腐蚀，心脏组织中的螺旋波活动，雪崩，股市波动，交通流量行为等。在过去的三十年中，物理学家，生物学家和数学家都依靠化学模型系统来研究这些有趣的行为。从基本科学和应用科学的角度来看，我们对非线性现象的了解的进一步发展将受到新化学振荡剂的显着影响。该研究计划着重于新（照片）电化学振荡器及其在燃料电池中的应用以及新型纳米材料的合成。燃料电池的采用被认为是一种对能源储能和生产的环保技术，用于广泛用途，这受到电极材料的高成本以及对电解质/电极界面上化学过程的不良理解的严重阻碍。对振荡行为及其对外部扰动的敏感反应的研究将为我们提供一组独特的参数，以了解对基本反应机制的见解。新的机械信息反过来将为开发更有效的燃料电池提供关键的指导。 ***反应动力学对纳米材料形态和微结构的影响在文献中有充分的文献记载，但很少对振荡系统进行研究。关于金属的振荡电化学溶解和含硫化合物的电化学氧化的拟议研究，预计将导致新的金属硫化基质化剂光催化剂的发展。纳米材料的形成导致反馈其潜在的非线性动态，从而为发现新的化学现象提供了独特的机会。从长远来看，该计划将导致非线性科学与材料科学之间的协同作用。