Anion Exchange Dispersion (PiperION-A5, 5 wt%) for Alkaline Electrolyzer and Fuel Cell, 10 mL/bottle, CAEFCAEDP

PiperION is a commercial line of anion exchange ionomers and membranes developed by Versogen. It is based on a specialized class of polymers known as poly(aryl piperidinium) (PAP). Because of its high chemical stability and ionic conductivity, it is a leading material for alkaline electrochemical devices, particularly those that aim to avoid expensive platinum-group metals (PGM).

The core innovation of PiperION is its ether-bond-free rigid aromatic backbone. Most traditional anion exchange membranes (AEMs) fail because their ether bonds (C-O-C) are susceptible to nucleophilic attack by hydroxide ions (OH-) in alkaline environments. (1) Backbone: A rigid aryl (aromatic) chain without ether linkages, providing extreme alkaline stability. (2) Cationic Group: The piperidinium cation (a six-membered ring containing nitrogen) is used as the ion-exchange site. Its cyclic structure and lack of β-hydrogens (in certain configurations) make it highly resistant to Hofmann elimination, a common degradation pathway for AEMs.

PiperION ionomers are primarily used to create the Catalyst Layer (CL) in Membrane Electrode Assemblies (MEAs): (1) AEM Water Electrolyzers (AEMWE): Enables hydrogen production using low-cost catalysts like Nickel or Iron instead of Iridium. (2) Alkaline Exchange Membrane Fuel Cells (AEMFC): Allows for the use of non-platinum catalysts (e.g., Silver or Nickel), significantly lowering the cost of the fuel cell stack. (3) CO2 Electrolysis: Used in systems that convert CO2 into syngas, ethylene, or formic acid. (4) Direct Ammonia Fuel Cells (DAFC): Highly stable in the presence of ammonia and concentrated alkaline fuels.

Part Number	CAEFCAEDP (C-AEFC-AEDP)
Chemical Formula/Structure
Appearance	Transparent Liquid
Solvent	Organic (undisclosed)
Concentration	5 wt%
Function Group	Piperidinium cation
Counter Ion	Carbonate
Package Size	10 mL/bottle (the solid powder form with 0.4 g/bottle also can be supplied upon request)

Notes: Please try to store the anion exchange dispersion in a dry place (glovebox is the best option). 

References: 

1. L. J. Titheridge, et al. Investigating Cathode Ionomer Content and Assembly Techniques for Anion Exchange Membrane Water Electrolyzers, ACS Electrochemistry. 2025, 1, 6, 951–961.
2. S. Favero, et al. Anion Exchange Ionomers: Design Considerations and Recent Advances - An Electrochemical Perspective, Adv. Mater., 2024, 36, 2308238.