The RM-200A torque rheometer (Hapu Electrical Technology Limited Liability Company, Harbin, China), Leica DM2500 polarizing microscope (PLM, Leica Microsystems, Wetzlar, Germany), DSC-1 differential scanning calorimeter (DSC, Mettler Toledo, Zurich, Switzerland), broadband dielectric/impedance spectrometer (Novocontrol Technologies, Montabaur, Germany), and pulsed electro-acoustic space charge test system (Shanghai Jiao Tong University, Shanghai, China) were used for the experiments.
Broadband dielectric impedance spectrometer
Manufactured by Novocontrol
Sourced in Switzerland
The Broadband dielectric/impedance spectrometer is a laboratory instrument designed for the characterization of dielectric and impedance properties of materials across a wide frequency range. It provides accurate measurements of the complex permittivity and conductivity of samples, enabling the study of their electrical and electrochemical behavior.
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3 protocols using broadband dielectric impedance spectrometer
1
Comprehensive Characterization of Materials
2
Comprehensive Characterization of Al-MnO2 Battery
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dc ionic conductivity and EIS were measured using a Novocontrol broadband dielectric/impedance spectrometer. Field-emission SEM (FESEM) images of MnO2 cathode and Al anode were obtained using a Leo 1550 Keck FESEM, in which EDX analysis was also carried out with a Bruker EDX detector. The XRD pattern of α-MnO2 cathodes during electrochemical reaction was taken with a Rigaku x-ray diffractometer. ATR-FTIR spectra of different electrolytes were obtained using a Bruker Hyperion FTIR spectrometer. XPS SSX-100 was applied to study the chemistry information of SEI on the Al surface and MnO2 cathodes. Galvanostatic measurements of Al batteries were performed using Neware battery testers at room temperature. CV diagram was performed on an electrochemical workstation of CH 600E. TEM images were obtained from the FEI Titan Themis CryoS/TEM, in which EELS spectra were obtained using a Gatan GIF Tridiem energy filter.
3
Impedance Testing for Touch Sensors
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The impedance tests were performed on a broadband dielectric/impedance spectrometer (Novocontrol GmbH). The samples were 1-mm thickness, the testing copper electrodes were diameter of 30 mm, testing Vrms (voltage effective value) was set at 1 V. The samples were treated without metal spraying on surfaces. For testing touch sensors, the impedance tests were performed on an electrochemical workstation (CHI660E), testing Vrms was set at 0.5 V.
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