Electrochemical Impedance Spectroscopy

Review of Top Journals: Research from the Chinese Academy of Sciences on Dynamic Analysis of Dual-Material Cathodes in Lithium-Ion Battery Capacitors Using DRT Method

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Review of Top Journals: Research from the Chinese Academy of Sciences on Dynamic Analysis of Dual-Material Cathodes in Lithium-Ion Battery Capacitors Using DRT Method

Click the blue text above to follow us Introduction The lithium-ion battery capacitor utilizes a dual-material positive electrode and capacitor materials, combining the characteristics of lithium-ion batteries and supercapacitors, filling the gap in meeting the demands for high power and energy density applications. However, research on the working mechanism of dual-material positive electrodes in lithium-ion … Read more

Multichannel Spectral Sensors Combined with Machine Learning for Rapid Identification of Coffee Varieties and Origins

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Multichannel Spectral Sensors Combined with Machine Learning for Rapid Identification of Coffee Varieties and Origins

Original Linkhttps://doi.org/10.1016/j.foodres.2025.116501AbstractThe rapid identification of coffee varieties and origins is crucial for ensuring quality control and authenticity in the coffee industry. This study explores the use of an affordable multichannel spectral sensor AS7265X (410 – 940 nm), combined with machine learning techniques, to achieve rapid, non-destructive, and accurate classification of coffee varieties and origins. Spectral … Read more

Distribution of Electrochemical Impedance Relaxation Times Reveals Sources of Overpotential in Lithium-Oxygen Battery Charging

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Distribution of Electrochemical Impedance Relaxation Times Reveals Sources of Overpotential in Lithium-Oxygen Battery Charging

【Research Highlights】The lithium-oxygen battery, despite its high theoretical energy density (3500Wh/kg), still faces significant challenges for commercial application. One major challenge in charging lithium-oxygen batteries is the low charging current, high overpotential, numerous side reactions, incomplete charging decomposition, and low coulombic efficiency. The discharge product lithium peroxide (Li2O2) is an insulating solid, which complicates the … Read more