电化学交流阻抗谱

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EIS: A Powerful Technique

Electrochemical Impedance Spectroscopy (EIS) is a powerful technique with a broad range of research applications.  Click on a link below to view the Application or Technical Note.

完整名单电化学交流阻抗谱层应用报告 »

EIS in Wetting of Lithium-ion Battery Materials

Posted by gamry on January 9, 2019

Lithium-ion batteries (LIBs) as electrochemical energy storage systems are key substitutes for fossil fuels. They are valuable also because of their low weight, high energy-density and long service life.

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The Quality of Your Fit in EIS

Posted by gamry on January 9, 2019

Electrochemical Impedance Spectroscopy (EIS) is now ubiquitous in the electrochemical research, development, and quality-control world. The technique compares the observed data from an EIS scan to a hypothetical model network of resistors, capacitors, inductors, and other theoretical components.

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Total Harmonic Distortion: Theory and Practice

Posted by gamry on December 19, 2018

This application note discusses Total Harmonic Distortion (THD), which shares characteristics with Electrochemical Impedance Spectroscopy (EIS). Both share the experimental basics but differ in the analysis of measurement data.

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拉曼光谱电化学

Posted by gamry on October 24, 2017

本应用报告主要讨论拉曼光谱电化学,集中探讨拉曼光谱与电化学结合的技术。

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快速检查EIS系统性能

Posted by gamry on October 19, 2017

最大频率是电化学阻抗谱(EIS)测试仪器的一个重要参数。大多数EIS制造商在说明书中列出1MHz的最大频率。

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使用Gamry EIS300电化学阻抗谱软件进行等效电路模拟

Posted by gamry on October 17, 2017

电化学阻抗谱(EIS)是分析复杂电化学系统的强有力工具。您可以浏览技术报告Basics of EIS,里面有对EIS的全面介绍。

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低阻抗锂离子电池的电化学阻抗谱测试

Posted by gamry on October 9, 2017

This Application Note describes a series of EIS measurements made on a Li ion secondary battery rated to have impedance below 500 µΩ at 1 kHz.电化学阻抗谱(EIS)是获取电化学系统信息的一种强有力的测试方法。它常常被应用在测试新型的能源转换和存储类电化学器件(ECS),包括电池,燃料电池和超级电容器。EIS可以被用到新设备发展的各个阶段,一直从半电解池反应的机理和动力学初始评估到电池包的质量控制。

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EIS: Potentiostatic or Galvanostatic Mode?

Posted by gamry on September 13, 2017

Introduction

Electrochemical Impedance Spectroscopy (EIS) measurements are more often performed in potentiostatic mode than under galvanostatic mode. The reason is partly convention and partly driven by materials. For example, coatings and corrosion-resistant materials have a higher impedance, so that the application of a 10 mV sine wave results in a nA (or smaller) response. Conversely, in a low-impedance device such as a large supercapacitor or battery, the application of a 10 mV sine wave produces amperes of current-flow, possibly changing the state of the device—or worse, yet, damaging it. For devices with intermediate impedance (e.g., smaller batteries, smaller supercapacitors, and sensors), either potentiostatic or galvanostatic modes may be used.

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有机涂层的电化学阻抗谱

Posted by gamry on February 21, 2017

我的所有阻抗图谱看上去都一样!这样的抱怨非常普遍。

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仪器导线和施加扰动信号幅值对EIS测量结果的影响

Posted by gamry on February 6, 2017

Gamry电化学仪器以准确测量EIS著称。每台电化学仪器都有准确的阻抗精度图(ACP)。 ACP阐述了在给定阻抗和频率条件下的阻抗精度。

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