In‐device Battery Failure Analysis
Year: 2025
Type: article
Abstract: Lithium-ion batteries are indispensable power sources for a wide range of modern electronic devices. However, battery lifespan remains a critical limitation, directly affecting the sustainability and user experience. Conventional battery failure analysis in controlled lab settings may not capture the complex interactions and environmental factors encountered in real-world, in-device operating conditions. This study analyzes the failure of commercial wireless earbud batteries as a model system within their intended usage context. Through multiscale and multimodal characterizations, the degradations from the material level to the device level are correlated, elucidating a failure pattern that is closely tied to the specific device configuration and operating conditions. The findings indicate that the ultimate failure mode is determined by the interplay of battery materials, cell structural design, and the in-device microenvironment, such as temperature gradients and their fluctuations. This holistic, in-device perspective on environmental influences provides critical insights for battery integration design, enhancing the reliability of modern electronics.
Source: Advanced Materials
Authors: Guannan Qian, Guibin Zan, Jizhou Li, Dechao Meng, Tianxiao Sun, Vivek Thampy, Ayrton M. Yanyachi, Xiaojing Huang, Hanfei Yan, Yong S. Chu, Sheraz Gul, Juanjuan Huang, Shelly D. Kelly, Sang‐Jun Lee, Jun‐Sik Lee, Wenbing Yun, Peter Cloetens, Piero Pianetta, Kejie Zhao, Ofodike A. Ezekoye, Yijin Liu
Institutions: The University of Texas at Austin, SLAC National Accelerator Laboratory, Stanford Synchrotron Radiation Lightsource, Sigray (United States), Brookhaven National Laboratory, Argonne National Laboratory, Advanced Photon Source, European Synchrotron Radiation Facility, Purdue University West Lafayette
Language: English
Subfield: Automotive Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4407042077