Core Viewpoint - A new in-situ monitoring technology based on integrated electrochemical sensing has been developed by researchers from the University of Science and Technology of China, which allows for high-precision pressure monitoring in lithium-ion batteries without additional packaging [1][3]. Group 1: Technology Development - The new technology utilizes the electrolyte and materials of lithium-ion batteries to construct a sensing interface, addressing the limitations of traditional implanted fiber optic monitoring methods, which are large and fragile [1][3]. - This integrated electrochemical sensing technology can respond to pico-level changes in expansion force and can operate stably within the battery for over one month [3]. Group 2: Application and Benefits - The technology captures irreversible deposition of lithium dendrites through asymmetry in pressure curves and peak changes, providing early warning and precise monitoring capabilities [3]. - The findings from accelerated aging experiments over 400 cycles show a strong correlation between pressure changes and capacity degradation, indicating the technology's effectiveness in monitoring battery health [3]. Group 3: Market Implications - This technology opens new pathways for smart battery design, particularly suitable for battery management systems in electric vehicles due to its low cost, high precision, and long lifespan [4].