Related Experiment Video
Updated: Jun 26, 2025

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
Published on: November 11, 2013
Scanning Electrochemical Microscopy Meets Optical Microscopy: Probing the Local Paths of Charge Transfer Operando in
Mahdi Moghaddam1, Louis Godeffroy2, Jerzy J Jasielec1,3
1Research Group of Battery Materials and Technologies, Department of Mechanical and Materials Engineering, Faculty of Technology, University of Turku, Turun Yliopisto, 20014, Finland.
This study reveals how copper hexacyanoferrate (CuHCF) microparticles store charge in energy devices. Localized material variations impact their electrochemical performance, guiding the design of better batteries.
Area of Science:
- Electrochemistry
- Materials Science
- Energy Storage
Background:
- Advancing electrochemical energy storage requires understanding microparticle redox dynamics.
- Copper hexacyanoferrate (CuHCF) microparticles are key components in energy storage systems.
Purpose of the Study:
- To investigate the oxidation/reduction behavior of individual CuHCF microparticles.
- To correlate local electrochemical activity with material properties.
Main Methods:
- Combined scanning electrochemical microscopy (SECM) for global analysis and optical microscopy for local imaging.
- Chronoamperometric experiments to study charge transfer dynamics.
Main Results:
- Identified a multistep oxidation/reduction process in CuHCF microparticles.
- SECM quantified global charge transfer dynamics, mimicking redox flow battery conditions.
- Optical imaging revealed spatially varying local conversion rates and state-of-charge.
Conclusions:
- Material loading heterogeneity within CuHCF microparticles affects charge storage capacity and conversion rates.
- Porous nanostructures are significant for efficient energy storage.
- Findings offer insights for designing improved energy storage materials.
Related Concept Videos
Interfacial Electrochemical Methods: Overview
Overview of Microscopy Techniques

