Applied interfacial technology

应用界面技术

• 批准号: 5248-2011
• 负责人: Kirk, Donald
• 金额: $ 2.19万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=568395
• 关键词: Applied; interfacial; technology

My Discovery Program focuses on engineering more rapid transport of mass and energy across gas-liquid-solid interfacial boundaries in order to improve energy efficiency. For electrochemical systems, the research investigates the solid state ionic and electrical resistance through the metal surface barrier layers, the electron transfer resistance from the layer to the solution phase species (often gaseous) and the transport of these species through the liquid boundary layer. The research has shown that for many systems, additional consideration is needed for meso-scale structural influences such as, catalyst or active electrode size, surface area effects and pore size. This research is equally relevant to chemical systems, ignoring the electrochemical driving forces. The approach taken is to experimentally determine the dominant variables for a given system in order to model the effects and then to verify by modifying the system to enhance the rate determining step. This knowledge is then used in application areas for technology development . The analytical tools used include electrochemical techniques (static and dynamic polarizations including EIS), analysis of surfaces for elements and speciation (XPS, SEM/EDX, XRD, TGA/DTA/MS) and solution and gas phase analysis (GC/LC/MS). For this next Discovery period the application areas which will be supported by the fundamental Discovery Grant research are: Clean water via Electrochemical Oxidation; Increased Energy Storage in Supercapacitors; and Enhanced Activated Carbon Contaminant Removal.

我的发现计划侧重于工程更快速的质量和能量传输通过气-液-固界面边界，以提高能源效率。对于电化学系统，该研究调查了通过金属表面阻挡层的固态离子和电阻，从层到溶液相物质（通常是气态）的电子转移电阻以及这些物质通过液体边界层的运输。研究表明，对于许多系统，需要额外考虑介观结构的影响，如催化剂或活性电极的尺寸，表面积效应和孔径。这项研究同样与化学系统相关，忽略了电化学驱动力。 所采取的方法是实验确定的主导变量为一个给定的系统，以模拟的影响，然后通过修改系统，以提高速率确定步骤进行验证。这些知识随后被用于技术开发的应用领域。使用的分析工具包括电化学技术（静态和动态极化，包括EIS）、元素和形态的表面分析（XPS、SEM/EDX、XRD、TGA/DTA/MS）以及溶液和气相分析（GC/LC/MS）。 在下一个发现阶段，基础发现补助金研究将支持的应用领域是：通过电化学氧化清洁水;增加超级电容器的储能;以及增强活性炭污染物去除。