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Actual introduction

Cross-sectional SEM-EDX analysis of psudo supercapacitor

A type of secondary battery, an energy storage/supply device that utilizes an ion adsorption/desorption layer that occurs at the interface between an electrode and an electrolyte.

Pros: Long life, short charging time Cons: Low energy density

The figure below shows a research example of using MnO2 in the electrode layer for the purpose of improving energy density and also improving electrical conductivity by incorporating Ultra-long single-walled carbon nanotubes (SWCNTs) in the layer (cross-section preparation and SEM-EDX analysis carried out by the SEM department)

Cross-sectional SEM-EDX analysis confirmed the details of the electrode structure and SWCNT connecting MnO2.

Cross-sectional SEM-EDX analysis of psudo supercapacitor
(a) SWCNT-MnO2Cross-sectional low-magnification SEM photograph of the layer, (b) cross-sectional EDX mapping analysis result,
(c) MnO2Cross-sectional SEM enlarged image of -SWCNT alternating layers, (d) MnO2-Cross-sectional SEM enlarged image of SWCNT alternating layers,
(e) SWCNT-MnO2Surface SEM image of layer cracks, (f) SWCNT-MnO2Cross-sectional SEM image of layer cracks

W. Gong et al., Journal of Power Sources 479 (2020) 228795