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Shuang Ma Andersen

Associate Professor
Dep. of Chemical Eng., Biotech. and Environmental Tech.

Phone: +4565509186
Email: mashu@kbm.sdu.dk
Webpage: SDU page

Electrochemical Energy Conversion and Functional Materials (EECFM)
Contact: Shuang Ma Andersen mashu(at)kbm.sdu.dk

EECFM group located at chemical engineering section, department of chemistry, biotechnology and environmental technology (KBM), engineering faculty (TEK) is fully engaged in renewable energy related functional material synthesis, characterization, optimization and recovery. Our visions are scientific excellency, focus on societal-challenge and affordable solution.
Main field of study includes:
Catalyst and electrode material development especially for fuel cells, electrolyzers and super capacitors
Electrode structure development and characterization
Reaction and degradation mechanism studies and mitigation, especially for material stability and precious metal recovery
Advanced microscopies of interests are transmission electron microscopy, scanning electron microscopy with energy dispersive X-ray analysis, and hilum ion microscopy 
Below are a few examples of representative images. 
   
Figure 1. Transmission electron microscopy (TEM) images of different magnifications on Pt nanoparticles of high catalytic activity homogenously distributed on durable graphitic support of low cost. Such catalyst is to be developed as new generation electrocatalyst for low temperature fuel cells. TEM images provide essential information on particle distribution, particles size, and degree of agglomeration.



Figure 2: TEM images of (a) Pristine catalyst powder, (b) post-stress-test catalyst layer from condition 1 and (c) post-stress-test catalyst layer from condition 2. (d) Particle size distribution histograms obtained from the TEM images. Here, TEM clearly illustrates different degradation mechanisms experienced between condition 1 and condition 2.
     
 Figure 3. Hilem ion microscopy (HIM) on compostion electrodes showing change of electrode morphology (A) before and (B) after simulated start-stop stress test; and change of electrode morphology (C) before and (D) after pressuriezed thermal treatment. Comparsion of the electrodes before and after the stress test indicating loss of polymeric materials and increse of electrode porosity. Comparsion of the electrode before and after the pressuriezed thermal treatment showing partiall melting of the polymeric component and reduced porosity.
    
Figure 4. Scanning electron microscopy (SEM) on morphological change of graphtic carbon (A) before and (B) after grinding treatment. The graphitic layered structure is well captured with SEM before grinding; after grinding the crystal edges are rather compromized 

Figure 5. Scanning electron microscopy with energy dispersive X-ray analysis (SEM-EDX). SEM image shows topography of a composite electrode assembly. Element mapping provides fine distribution of each element.  

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