Negative Electrode Material Properties and Motion Safety of Wearable Medical Devices

Abstract

As health care has gradually become a hot research topic, the use of wearable medical devices to detect human exercise status and health indicators has become a focus of research. In this paper, lithium titanate materials with high safety and good structural stability were taken as the main research objects, and lithium titanate films with amorphous structure were studied. The film exhibited good electrochemical performance in the potential region of 0∼3 V, and the reversible capacity at 0.1 C was 283 mAh g-1, and only 3% of the capacity was lost after 100 charge and discharge. At a magnification of 5 C, the reversible capacity of the lithium titanate thin film reached 160 mAh g-1, and the loss rate after 100 charge and discharge was less than 7%. Based on EEMD (Ensemble Empirical Mode Decomposition), the intermuscular coherence was analyzed, and the characteristics of myoelectric signals were analyzed from different levels, and the muscle safety characteristics during exercise were estimated. Based on the test data analysis, the correlation between the average instantaneous frequency of sEMG (surface Electromyographic) and the intermuscular coupling characteristics during exercise is analyzed to provide a comprehensive evaluation method for muscle safety analysis. Finally, testing and analyzing the actual data to estimate the effectiveness of muscle safety provides a reference standard for the designation of exercise plans and the measurement of exercise volume. INDEX TERMS Wearable medical devices, negative electrode film, electrochemical performance, muscle exercise safety analysis, myoelectric signal.