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多通道Gamry多通道多功能電化學工作站
eQCM 10MGamry 電化學石英晶體微天平
Reference3000Gamry電化學工作站
Reference3000多功能電化學工作站
Gamry電化學工作站
Reference 600+Gamry電化學工作站
Gamry旋轉(zhuǎn)圓盤電極
Reference600+電化學工作站
Interface 1000Gamry電化學工作站
Interface 1000美國進口電化學工作站品牌
QCM-I高精度耗散型石英晶體微天平
IMPS/IMVSGamry太陽能電池測試用電化學工作站
Interface 1010Interface 1010電化學工作站
Interface 5000Gamry 電化學工作站
RDE710Gamry旋轉(zhuǎn)圓盤/旋轉(zhuǎn)環(huán)盤電極電化學測試系統(tǒng)
Gamry氧還原
發(fā)布時間:2017/4/16
點擊次數(shù):1742
Electrochemical Impedance Spectroscopy (EIS) has become a standard technique in the
electrochemists’ toolbox providing detailed information over very wide time scales and
amplitudes. Commercial instruments are available that can measure impedances from mΩ to
TΩ and over frequencies from μHz to MHz.
Most commonly, EIS is measured using a “single-sine” method where individual frequencies
are measured sequentially. One disadvantage of single-sine EIS is the time it takes to
acquire a full spectrum. A complete sine wave cycle takes ~17 min at 1 mHz and ~27 hrs for
10 μHz. This disadvantage can be overcome by measuring multiple frequencies at the same
time (akin to Fourier transform spectroscopy techniques).
This application note discusses the use of multiple sine wave excitation in EIS and its
implementation in Gamry Instrument software. It does not cover the basics of EIS which are
described in our Basics of Electrochemical Impedance Spectroscopy application note.