Licube Aims to Fuel the Future of Fusion Power

The Rise of Fusion Power and Its Lithium Needs

As the prospect of fusion power becomes increasingly viable, the demand for lithium is set to skyrocket.

Enter Licube, an innovative startup that has secured technology from Hirosaki University in Japan to refine lithium-6, the crucial isotope needed for fusion power generation, from naturally occurring lithium sources.

The Critical Role of Tritium

The success of fusion plants relies heavily on their fuel supply. Most future fusion reactors will utilize a combination of deuterium and tritium. While deuterium is readily available, tritium is a scarce commodity in nature, raising concerns about whether there will be enough to support the projected number of fusion facilities.

To overcome this challenge, many fusion projects plan to generate tritium onsite. During fusion reactions, neutrons are emitted, which can interact with lithium atoms to produce tritium. This process involves surrounding the reactor with lithium, allowing for the capture and recycling of tritium as fuel.

Licube's Unique Solution

However, not all lithium is created equal. The isotopes lithium-6 and lithium-7 differ in their atomic weight, with lithium-6 being significantly more effective at neutron capture and tritium production. Unfortunately, lithium-6 comprises only about 7.5% of natural lithium, making its extraction a challenging task.

Licube aims to meet this demand. "If fusion succeeds, we anticipate a $50 billion market by 2040," shared Yohei Kiguchi, Licube's co-founder and CEO, during his presentation at the prestigious TechCrunch Disrupt event in San Francisco.

Licube's Technology and Market Potential

Participating in the Startup Battlefield pitch competition at TechCrunch Disrupt, Licube joins a competitive field of 20 startups focusing on transformative technologies.

While fusion power presents a significant opportunity within the global energy market, experts acknowledge that the advent of operational power plants may still be several years away.

“Fusion represents a monumental opportunity for the future; however, we recognize that its realization might be delayed,” Kiguchi stated.

In the interim, Licube will utilize its technology to supply purified lithium for industries beyond just fusion, targeting applications in semiconductors, pharmaceuticals, fission reactors, and space exploration.

The foundation of Licube’s process lies in an electrolyzer, which applies electrical current to facilitate chemical reactions. In simple terms, lithium is dissolved in a liquid on one side of a ceramic membrane. As a current passes through, lithium-6 travels more swiftly, allowing Licube to extract and isolate it effectively.

The ultimate aim is to achieve a lithium-6 purity of at least 99.995%, providing adequate supplies to fusion companies to incorporate into their fuel production systems.

Inspired by a Vision of Fusion

Kiguchi's ambition for Licube was sparked by a visit to ITER, an experimental fusion reactor currently under development in southern France. Having been living in Monaco after stepping down from his previous venture, an energy-switching platform called Enechange, he felt compelled to pursue a more significant contribution to the energy landscape.

“I realized I was too young to retire; I’m passionate about energy and aspire to be part of something greater,” he reflected.