Electrochemical Impedance Spectroscopy

The Birth of the ‘Yuheng’ Chip! Tsinghua Team Successfully Develops

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[Image][Image]Spectroscopy records the intensity variations of light at different wavelengths, revealing the interaction between matter and light, which serves as the “optical key” for analyzing composition, structure, and properties. However, traditional spectral measurements are limited by the long-standing inherent contradiction between spectral resolution and imaging flux in spectroscopic acquisition and solidified structural measurements, which has … Read more

CRPS: Revealing Performance Limitations of All-Solid-State Na-O₂ Batteries through EIS-DRT Analysis

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CRPS: Revealing Performance Limitations of All-Solid-State Na-O₂ Batteries through EIS-DRT Analysis

[Paper Link] https://doi.org/10.1016/j.xcrp.2025.102787 [Author Affiliations] ShanghaiTech University; University of Chinese Academy of Sciences [Abstract] All-solid-state Na-O2 batteries exhibit high energy density and safety, but suffer from poor rate performance and short cycle life.This study utilizes electrochemical impedance spectroscopy (EIS) combined with distribution of relaxation times (DRT) analysis to identify key performance limiting factors.The results indicate … Read more

Principles and Applications of Electron Paramagnetic Resonance (EPR) Testing

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Principles and Applications of Electron Paramagnetic Resonance (EPR) Testing

Electron Paramagnetic Resonance (EPR) is a magnetic resonance technique derived from the magnetic moment of unpaired electrons. It can be used to qualitatively and quantitatively detect unpaired electrons contained in the atoms or molecules of substances, as well as to explore the structural characteristics of their surrounding environment. For free radicals, the orbital magnetic moment … Read more

Review of Electrochemical Spectroscopy Development: A Sixty-Year Journey

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Review of Electrochemical Spectroscopy Development: A Sixty-Year Journey

ChemSocRev (Chemical Society Reviews) is a top-tier journal published by the Royal Society of Chemistry in the UK, featuring high-impact, authoritative, and highly readable review papers. Since its inception in 1947 as the Quarterly Review of the Chemical Society, ChemSocRev has published many influential review articles over the past 70 years, establishing itself as one … Read more

Electrochemical Impedance Spectroscopy Relaxation Time Distribution (EIS-DRT) Analysis of Lithium-Sulfur Battery Electrode Processes

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Electrochemical Impedance Spectroscopy Relaxation Time Distribution (EIS-DRT) Analysis of Lithium-Sulfur Battery Electrode Processes

Electrochemical Impedance Spectroscopy (EIS) is a widely used, simple, practical, and non-destructive technique in battery analysis. However, traditional analytical techniques can only provide an overall performance of all electrochemical processes within the battery, and much useful information remains vague or difficult to obtain. This poses a major challenge when analyzing complex chemical systems using EIS, … Read more

Applications of DRT in Electrochemical Impedance Spectroscopy

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Applications of DRT in Electrochemical Impedance Spectroscopy

DRT model is a physically meaningful equivalent circuit whose mathematical description has been explained previously. The purpose of this model is to obtain the relaxation time distribution function. Since the expression of the function is unknown, it is difficult to directly obtain the function. Here, we introduce the idea of transforming the problem of finding … Read more

Jiang Jun & Luo Yi Chem. Soc. Rev. Overview: Intelligent Understanding of Spectra: From Structural Analysis to Performance Design

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Jiang Jun & Luo Yi Chem. Soc. Rev. Overview: Intelligent Understanding of Spectra: From Structural Analysis to Performance Design

Corresponding Authors: Jiang Jun, Luo Yi Affiliation: University of Science and Technology of China Professor Jiang Jun’s Research Group Homepage:http://staff.ustc.edu.cn/~jiangj1 Abstract Spectroscopy serves as a bridge connecting experimental observations with quantum mechanical principles, linking the microscopic structure of molecules to the macroscopic properties of materials. Despite its critical importance, establishing quantitative structure-property relationships from spectral … Read more

Types of Water Quality Sensors and Their Application Scenarios

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Types of Water Quality Sensors and Their Application Scenarios

Types of Water Quality Sensorsand Application ScenariosSpectroscopy 101: Let Water Quality “Speak” the TruthSPECTROSCOPY In the scientific world of water quality monitoring, spectroscopy acts like a precise “X-ray,” decoding hidden information about water quality through three unique principles: absorption, fluorescence, and reflection. Below, we will break down their scientific logic and practical value — PART.01Core … Read more

Crushing Machine Learning! A New Method for Aging Modeling of Cylindrical LIB SEI Confirmed by Top Journals as a ‘Dimensionality Reduction Strike’ of Physical Models!

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Crushing Machine Learning! A New Method for Aging Modeling of Cylindrical LIB SEI Confirmed by Top Journals as a 'Dimensionality Reduction Strike' of Physical Models!

Aging Kinetics Modeling of Cylindrical Lithium-Ion Batteries Due to the Evolution of the Solid Electrolyte Interphase (SEI) Layer Abstract w The solid electrolyte interphase (SEI) layer plays a critical role in the aging and degradation processes of lithium-ion batteries (LIB), directly affecting the performance and lifespan of the battery. This paper proposes a physics-based model … Read more

MAX-303C Electric Filter Fiber Xenon Light Source

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MAX-303C Electric Filter Fiber Xenon Light Source

Product Features: Can output high power, heat-free pure ultraviolet, visible, and full-spectrum illumination; Adopts a fully heat-insulated design with dual mirror modules; There are two types of mirror modules (UV 200-400nm, VIS 400-780nm, full spectrum 200-2500nm); Low stray light, no heat; Optical power is continuously adjustable; Easy to install and operate; Application Fields: Illumination source … Read more