CRTG is developing an active anode material which utilizes an artificial Solid Electrolyte Interphase that inhibits expansion and pulverization during charging. This material is bonded to the anode.
Latest email from CRTG:
“Endurion continues to make strong progress. The team has made and tested hundreds of test batteries and their performance is exceeding the Company’s expectations. The scientists continue to increase the amount of silicon and refine the anode-making process, leading to more scientific insights and passing milestones on our technical roadmap.”
This is a “drop in technology” which Matt Kappers has referred to in several recent podcast interviews.