1 School of Automation, Hangzhou Dianzi University, Hangzhou 310018, China; 2 Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China; 3 Institute of Microelectronics, University of Macau, Avenida da Universidade, Taipa, Macau, China
Abstract Li dendrites and electrolyte leakage are common causes of Li-ion battery failure. H2, generated by Li dendrites, and electrolyte vapors have been regarded as gas markers of the early safety warning of Li-ion batteries. SnO2-based gas sensors, widely used for a variety of applications, are promising for the early safety detection of Li-ion batteries, which are necessary and urgently required for the development of Li-ion battery systems. However, the traditional SnO2 sensor, with a single signal, cannot demonstrate intelligent multi-gas recognition. Here, a single dual-mode (direct and alternating current modes) SnO2 sensor demonstrates clear discrimination of electrolyte vapors and H2, released in different states of Li-ion batteries, together with principal component analysis (PCA) analysis. This work provides insight into the intelligent technology of single gas sensors.
Wenjun Yan(闫文君), Zhishen Jin(金志燊), Zhengyang Lin(林政扬), Shiyu Zhou(周诗瑜), Yonghai Du(杜永海), Yulong Chen(陈宇龙), and Houpan Zhou(周后盘) A single dual-mode gas sensor for early safety warning of Li-ion batteries: Micro-scale Li dendrite and electrolyte leakage 2022 Chin. Phys. B 31 110704
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