I-Corps: Direct Characterization of Electrothermal Properties of Roll-to-Roll-Manufactured Materials

这个I-Corps项目的更广泛的影响/商业潜力是使用于能源材料制造诊断的多属性测量设备商业化。智能手机、电动汽车和废热回收市场将是该项目的主要机遇。大量的商业和工业过程依赖于精确的温度和电气测量来诊断制造过程中的问题并验证性能。如何测量温度和电气性能以及需要何种精度是每个应用和产品都需要回答的两个非常重要的问题。该仪器的初步商业化审查得到了制造部门在直流极端快速充电下运行的锂离子电池等储能设备循环时准确测量温度的需求的支持。该I-Corps项目为在不更换材料/设备的情况下准确测量多种传输特性的困难提供了可行的解决方案，并且是第一个能够连续测量固有电导率、热导率、离子电导率和空间温度分布的系统。当前仪器最严重缺乏的能力是准确测量热性能的能力，这在这里得到了解决。该设备中的独特启用设计是具有反馈控制区的主动加热热防护装置，其允许消除寄生热损失通道，该寄生热损失通道阻止竞争技术准确地确定通过材料的热传导。

The broader impact/commercial potential of this I-Corps project is to enable the commercialization of a multi-property measurement apparatus for use in energy materials manufacturing diagnostics. The smart phone, and electric vehicle, and waste heat recovery markets will be the major opportunities for this project. A vast number of commercial and industrial processes rely on accurate temperature and electrical measurements for diagnosing problems during the manufacturing process and certifying performance. How temperature and electrical performance are measured and what degree of accuracy is required are two very important questions that need to be answered for every application and product. Initial commercialization review of the instrument is supported by the needs for the manufacturing sector to accurately measure temperature while cycling energy storage devices such as lithium-ion batteries operating under direct current extreme fast charging.This I-Corps project presents a feasible solution to the difficulty of accurately measuring multiple transport properties without material/device exchange, and is the first system capable consecutive measurement of intrinsic electrical conductivity, thermal conductivity, ionic conductivity, and spatial temperature distribution. The most critically lacking capability in current instrumentation is the ability to accurately measure thermal properties, which is addressed here. The unique enabling design in this apparatus is an actively heated thermal guard with feedback controlled zones, which allows for the elimination of parasitic heat loss channels that prevent competing technologies from accurately determining the thermal conduction through a material.