电化学交流阻抗谱

eis5

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 »

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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电化学电容测试:第三部分—电化学阻抗谱

Posted by gamry on June 30, 2015

本章为应用指南的第三部分,主要阐述能量转换装置相关的电化学技术。本章主要讨论的是电化学阻抗谱基础(EIS)知识并且将通过在单电化学电容和堆栈上的测试介绍Gamry的电化学阻抗技术。

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User Defined Components for EIS Modeling

Posted by gamry on August 2, 2013

With Gamry’s Echem Analyst and Model Editor you can create all sorts of EIS models provided they are made up of series and parallel combinations of 8 different basic circuit components.

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Low Impedance Limits
 with the Gamry Reference 30k Booster

Posted by gamry on August 2, 2013

This Application Note describes measurement of very small impedances using Electrochemical Impedance Spectroscopy (EIS).

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Verification of Low-impedance EIS Using a 1 mΩ Resistor

Posted by gamry on August 2, 2013

This application note describes a series of EIS measurements made on a 1mW surface-mount resistor.

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OptiEIS™: A Multisine Implementation

Posted by gamry on August 2, 2013

This application note discusses the use of multiple sine wave excitation in EIS and its implementation in Gamry Instrument software.

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电化学阻抗法的原理

Posted by gamry on July 26, 2013

这个应用报告介绍了EIS的理论,并且尽量不从数学和电工理论方面来阐述。如果你仍然觉得这里阐述的材料难以理解也不要停止阅读。即使你不了解所有的讨论内容,也可以从这篇应用报告中得到有用的信息。

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