Ti-Based Reference Electrodes for Inline Implementation into Lithium-Ion Pouch Cells
Ti-Based Reference Electrodes for Inline Implementation into Lithium-Ion Pouch Cells
复制标题
用于锂离子软包电池内联实施的钛基参比电极
DOI：
10.1002/ente.202100602
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发表时间：
2021
影响因子：
3.8
通讯作者：
Ahmed Z
中科院分区：
文献类型：
--
作者：
Ahmed Z
能量存储设备，例如电池，是现代生活的必要方面。[1]许多行业和领域，如个人计算、航空航天技术和交通运输，都高度依赖于可靠、不间断的电源供应，而使用锂离子电池设备最方便。锂离子电池由于其高能量密度、大容量、低自放电和高输出电位等优点而被广泛采用，从而在学术界和工业界都产生了重大兴趣。[2]因此，在活性材料、优化设计和可靠的诊断等方面，电池性能的提高成为研究的重点，但电池容量和输出功率的变化也随之增加。虽然电池的功率和能量密度提高了，但诊断方法却相对滞后。电池管理系统依赖于偶尔的热电偶和全电池电位，对阳极和阴极状态的了解非常有限。参比电极（RE）通过能够洞察锂离子电池的每个电极过程来解决这个问题。尽管几十年来在能量存储领域进行了大量研究，但包含化学稳定参比电极的可靠、用户友好且无人为因素的商业电池配置远未广泛使用，[3]据我们所知，目前没有可用的商业锂离子电池配备专用参比电极。这限制了优化和监控能力，并导致黑盒问题，即我们只知道输入和输出，而不了解内部行为，因为无法获得有关限制过程和单个细胞组分的信息。[4]美国
Energy storage devices, such as batteries, are necessary aspects of modern life.[1] A wide range of industries and fields such as personal computing, aerospace technology, and transportation are highly dependent on access to reliable, uninterrupted power supplies, which are most conveniently provided using lithium-ion battery devices. Lithium-ion batteries have been widely adopted due to their advantages, such as high energy density, large capacity, low self-discharge, and high output potential, creating an area of major interest both in academia and industry.[2] As such a significant amount of research is focused on improving the cells’ performance based on active materials, optimized designs, and reliable diagnostics, which gives rise to variation in batteries’ capacity and power output.Although the power and energy density of batteries have increased, diagnostics methods are lagging behind. Battery management systems rely on the occasional thermocouple and full-cell potential, with very limited knowledge of the anode and cathode state. Reference electrodes (REs) address this issue by enabling insight into per-electrode processes of Li-ion cells. Despite significant research in the field of energy storage over several decades, a reliable, user-friendly, and artifact-free commercial cell configuration containing a chemically stable reference electrode is far from being widely available,[3] as to the best of our knowledge no currently available commercial Li-ion batteries are equipped with a dedicated reference electrode. This limits the optimization and monitoring capabilities, and leads to the black-box problem where we only know input and output, without understanding the internal behavior, because information on limiting processes and individual cell components cannot be obtained.[4]