From Lab to Market: How Circu Li-ion Turned Academic Research into Enterprise Sales

European startups are often criticized for excelling at research but struggling with commercialization. In a recent episode of Category Visionaries, Circu Li-ion CEO Antoine Welter revealed how his company bucked this trend, transforming academic research into a scalable battery recycling business.

“Out of Europe, we spend billions and billions on R&D, but we’re really shit at bringing those ideas to market,” Antoine notes, highlighting a challenge familiar to many deep tech founders. The key to overcoming this gap lay in combining rigorous academic research with practical market validation.

Starting with the Problem, Not the Solution

While many technical founders begin with a solution looking for a problem, Circu Li-ion took the opposite approach. Antoine leveraged his network to identify market needs, receiving crucial insight from an automotive OEM executive who highlighted battery recycling as a potential opportunity.

The market validation was clear: “Today people pay to get rid of a battery. So there was clear that there is a real problem.” This insight drove them to explore the technical feasibility, leading to a crucial partnership with co-founder Dr. Xavier Cohen, who “read over 100 academic papers stating that there was something real to be solved.”

Building the Right Technical Foundation

Instead of trying to solve every battery recycling challenge at once, Circu Li-ion started with a focused market: micro-mobility batteries. “We focused on that market in beginning simply… these batteries basically die twelve to 18 months after they entered the market,” Antoine explains. This allowed them to build and validate their technology with faster feedback cycles than targeting electric vehicle batteries, which take “five and eight years in an optimal case until they come out of the market.”

From Theory to Practice

The transition from research to commercial product required proving their solution worked in the real world. Antoine emphasizes why they built their own facility: “We’re not a paper startup… customers come, they see their own classically, they do a bigger pilot project with us before they visit us, so that they can really see their own batteries being processed.”

This commitment to practical demonstration helped overcome the skepticism that often faces research-based startups. Rather than relying on academic credentials or theoretical benefits, they focused on showing tangible results.

Scaling Through Standardization

To scale beyond pilot projects, Circu Li-ion developed what Antoine calls “the McDonald’s of upcycling” – a standardized solution that can be implemented within existing infrastructure. This approach solved both technical and commercial challenges, allowing them to “set up the process, we provide the technology and the menu card, but then we roll out with recyclers and oems that they can implement our solution on their sites.”

The Power of Technical Co-founders

The partnership between business and technical expertise proved crucial for winning enterprise trust. As Antoine explains, “on the technical side, it’s having co-founder like Xavier, who really has the deep academic expertise and can convince everyone that he understands and can kind of talk eye to eye with them.”

For technical founders navigating the research-to-market gap, Circu Li-ion’s journey offers a clear blueprint: start with market validation, focus on practical demonstrations over theoretical benefits, and build a standardized solution that can scale within existing infrastructure. The key is combining deep technical expertise with a practical understanding of customer needs and operational constraints.