In-Operando Lithium-Ion Transport Tracking in an All-Solid-State Battery.-猫眼课题宝

DOI：

10.1002/smll.202204455

发表时间：

2022-09

期刊：

Small

影响因子：

13.3

通讯作者：

中科院分区：

材料科学1区

文献类型：

作者：

Takane Kobayashi;T. Ohnishi;Takahiro Osawa;A. Pratt;S. Tear;Susumu Shimoda;Hidetada Baba;M. Laitinen;T. Sajavaara

全固态电池是通过锂离子在正极和负极之间的传输来充电和放电的二次电池。为了充分实现这种电池技术的显著优势，例如更高的能量密度，更快的充电时间和更安全的操作，必须了解锂离子在操作过程中如何在电池中传输和分布。然而，作为第三轻的元素，在全固态装置的操作期间用于定量分析锂的方法是有限的，使得锂传输的实时跟踪尚未得到证实。在这里，作者报告说，通过利用高强度热中子源和锂-6作为热中子诱导核反应中的示踪剂，在接近真实的时间内定量跟踪全固态电池中锂离子的传输。此外，作者表明，锂离子通过固体电解质的迁移机制和途径可以通过运行中跟踪来确定。从这些结果来看，作者认为全固态电池的发展已经进入了一个阶段，在了解电池中锂离子传输的同时可以取得进一步的进展。

An all-solid-state battery is a secondary battery that is charged and discharged by the transport of lithium ions between positive and negative electrodes. To fully realize the significant benefits of this battery technology, for example, higher energy densities, faster charging times, and safer operation, it is essential to understand how lithium ions are transported and distributed in the battery during operation. However, as the third lightest element, methods for quantitatively analyzing lithium during operation of an all-solid-state device are limited such that real-time tracking of lithium transport has not yet been demonstrated. Here, the authors report that the transport of lithium ions in an all-solid-state battery is quantitatively tracked in near real time by utilizing a high-intensity thermal neutron source and lithium-6 as a tracer in a thermal neutron-induced nuclear reaction. Furthermore, the authors show that the lithium-ion migration mechanism and pathway through the solid electrolyte can be determined by in-operando tracking. From these results, the authors suggest that the development of all-solid-state batteries has entered a phase where further advances can be carried out while understanding the transport of lithium ions in the batteries.

In-Operando Lithium-Ion Transport Tracking in an All-Solid-State Battery.

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