Application of Nondestructive Testing Technology in Device‐Scale for Lithium‐Ion Batteries

Abstract

Lithium‐ion batteries (LIBs), due to their high energy density and long cycling life have been widely applied in a variety of industries, including electric vehicles, small‐ and medium‐sized electronic devices, and intelligent medical care. Nevertheless, the security and real‐time state of LIBs is difficult to obtain accurately, improving the battery's service life and ensuring battery safety have become the focus of research. Nondestructive testing (NDT) technology has developed quickly to reach this purpose, requiring a thorough investigation of how batteries’ internal structures have evolved. The principles, contributing factors, and applications of various widely used NDT techniques are summarized and discussed in this review. These inspection techniques can be used to evaluate the battery condition, observe the internal structure of the battery, analyze the failure phenomenon and electrochemical performance of the battery operation, etc. Finally, a summary and outlook are given regarding the characteristics and prospects of NDT methods. This overview will show new light on the application of NDT technology for LIBs and will promote the development of next‐generation LIBs with high security.

Review of the Real-Time Monitoring Technologies for Lithium Dendrites in Lithium-Ion Batteries

“…Lithium-ion batteries (LIBs) possess the merit of high energy density and have been commonly applied in various energy storage devices [1][2][3][4][5], whereas their life and safety performance cannot meet demands, which is not conducive to their further development [6,7]. The growth of lithium dendrites on the anode surface is the cause of short life and poor safety [8][9][10].…”