Year: 2024
Type: article
Abstract: Obtaining the electrode particle level information is an essential prerequisite for diagnosing battery failures and assessing their state of health (SOH). However, detecting the electrochemical evolution of particles at the nanoscale is not yet possible due to the lack of real-time and non-destructive detection methods with sufficient spatial resolution and sensitivity. Here, we propose an operando quantum sensing approach in which diamond nitrogen-vacancy (NV) centers are embedded directly into the internal electrodes to detect the electrochemical evolution at the particle level. The proof of the concept is experimentally demonstrated on an Fe 3 O 4 electrode, where the nanoscale electrochemical evolution is detected by monitoring the magnetic stray field from nearby electrode particles. Multithreading monitoring achieves a spatially resolved measurement of the internal magnetic field, revealing the heterogeneous reaction kinetics among the individual particles. Our work provides a brand-new route for high-resolution, sensitive, and multi-thread monitoring of nanoscale electrochemical evolution in batteries.
Source: Device
Authors: Binghang Liu, Xiu-Qi Chen, Yan-Xing Shang, Xiaolin Xiong, Huijie Zheng, Gang-Qin Liu, Liumin Suo
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $9,350
OpenAlex ID: W4402392119