The 4020 is a development of the previous K14 technology and is made using common transition metals on a carbon support. The catalyst has successfully completed Acta's test programme for reproducibility, scalability and durability, and can be sold in powder form or integrated onto a carbon paper electrode. Current capacity of 2kg per week would be worth €40,000 per week at current pricing.
In electrochemical half cell tests, the 4020 has shown itself to be around 20% more active than the K14.

The 4020 is designed for use in Acta's unique alkaline membrane fuel cells, conventional alkaline fuel cells and in zinc air batteries. The 4020 will increase customer performance while allowing customers to compete with existing power supply technologies at a cost that is impossible with the platinum catalysts. Sampling has started to a number of customers.