超细纤维
金属锂
锂(药物)
材料科学
固态
纳米技术
金属
还原剂
锂电池
光电子学
化学
化学工程
电极
工程类
复合材料
冶金
工程物理
阳极
有机化学
物理化学
离子
内分泌学
医学
离子键合
作者
Jun Guo,Kongjun Zhu,Qi Wu,Yu Rao,Penghua Liang,Jiatao Chen,Zheng Zhang,Changhao Chen,Jingsong Liu,Kang Yan,Jing Wang
标识
DOI:10.1016/j.jpowsour.2024.234231
摘要
Embedded fiber optic sensors are considered a promising technology that can unlock the black box within a battery and understand the fundamental internal chemical and physical states during operation. However, the interfacial compatibility between the implanted fiber sensor and electrode materials has not yet been investigated. In this study, a fiber Bragg grating (FBG) sensor is incorporated into a solid-state lithium-metal coin cell at different interfaces to explore the resulting variations in electrochemical property. The presence of the fiber sensor accelerates the capacity fade compared with that of a pristine cell. To address this issue, a new method is employed to reduce the sensor diameter from 250 μm to 30 μm while preserving its sensing function. The reduction in the sensor diameter enhances its compatibility with the size of the electrode materials. Integrating a micro-FBG (MFBG) sensor into the solid-state cell also alleviates the defects related to interface stratification and void growth, leading to the improved capacity retention. Moreover, the feasibility of utilizing MFBG for in-situ monitoring of internal stress within a lithium-metal cell is demonstrated. This technique offers a scalable solution for the noninvasive monitoring of battery state, thereby improving the reliability and safety of cells.
科研通智能强力驱动
Strongly Powered by AbleSci AI