Visualizing Structural Changes in Batteries Using Hard Radiation and the GaliPIX3D Detector
contributed by Malvern Panalytical |
Computed tomography on alkaline batteries
The alkaline batteries chosen for this purpose consist of MnO2 as the cathode material Zn powder as the anode material [2-3]. While MnO2 is used as a solid mixture with graphite, the Zn powder is suspended in gelled KOH electrolyte. The main chemical processes can be described in the following way:
Anode:
Zn + 2OH- > ZnO+H2O + 2e-
Cathode:
2MnO2 +2H2O + 2e- > 2MnOOH +2OH-
During the electric discharge MnO2 is reduced by a solid-state intercalation of H+ into the MnO2 lattice. The Zn is oxidised and ZnO is formed around the core. MnO2 is transformed to MnOOH and as a consequence the thickness of the Mn layer increases.
Read the full article now
Log in or register to read this article in full and gain access to The Analytical Scientist’s entire content archive. It’s FREE and always will be!
Login
Or register now - it’s free and always will be!
You will benefit from:
- Unlimited access to ALL articles
- News, interviews & opinions from leading industry experts
- Receive print (and PDF) copies of The Analytical Scientist magazine
Or Login via Social Media
By clicking on any of the above social media links, you are agreeing to our Privacy Notice.
