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Rapid Processing and Scanning Electrochemical Techniques Applied to Sintered Nickel Electrodes of Varying Thickness and Rate Capability

机译:快速加工和扫描电化学技术应用于厚度和倍率能力不同的烧结镍电极

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Nickel based battery chemistries still have a place in stationary energy storage applications such as in back up accumulator storage for photovoltaic devices, owing to the long lifetimes and relative safety of these technologies. In this study rapid Near Infrared (NIR) radiative heating is used to sinter electrode pastes into plaques in 10's of seconds as opposed to 10's of minutes via traditional convection sintering routes. This step change reduction in processing time is useful in enabling rapid roll-to-roll manufacture of large-scale electrodes. In order to avoid difficulties associated with controlled atmospheres, reducing agents were added to the electrode pastes. Sintered plaques were characterized using typical physical techniques such as SEM/EDX, XRD and BET but scanning electrochemical techniques, more typical in corrosion studies, have also been used to investigate current densities and spatially resolved surface potential maps and identify how regions of varying thickness effect rate capability.
机译:由于这些技术的长寿命和相对安全性,镍基电池化学材料仍在固定式能量存储应用中占有一席之地,例如在光伏设备的备用蓄电池中。在这项研究中,快速的近红外(NIR)辐射加热用于在10秒的时间内将电极浆料烧结成斑块,而传统的对流烧结途径则需要10分钟的时间。加工时间的这种逐步改变的减少对于实现大规模电极的快速卷对卷制造是有用的。为了避免与受控气氛相关的困难,将还原剂添加到电极浆料中。使用典型的物理技术(例如SEM / EDX,XRD和BET)对烧结斑进行了表征,但是在腐蚀研究中更典型的扫描电化学技术也已用于研究电流密度和空间分辨的表面电势图,并确定厚度变化区域的影响速率能力。

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