23 | Cullen Quine — Postdoctoral Researcher at NREL & Co-founder of Activated Energy
About this episode
Cullen Quine discusses hydrogen storage challenges and solutions in energy density with Nate Kirchhofer.
🐝 What is >100X more energy dense (33 kWh/kg) than Li-ion batteries (0.3kW/kg), and why is it so hard to store it at room temperature? What is a naturally-occurring gas that can be uniquely compressed into a non-toxic, non-flammable liquid at room temperature? And, how is beekeeping like energy storage cleantech?! To answer these questions, we're joined by Cullen Quine . He provides insights on his team's work, both as a Postdoctoral Researcher at the National Renewable Energy Laboratory (NREL) and as Co-Founder of Activated Energy ( unaffiliated with NREL ), in conversation with BioZen's CEO Nate Kirchhofer. At NREL, Cullen's team focuses on addressing the challenges associated with hydrogen (H2) storage: H2 has low volumetric energy density as a gas, and to increase that energy density, it must be liquefied, which requires energy and an extremely cold temperature of -423°F (-253°C or 20 Kelvin). The main issue then arises during the transfer between containers: to cryogenic liquid H2, everything looks scorching hot, so it flash boils, leading to significant boil-off losses. His solution employs a solid-state material to absorb the gas as it boils off, allowing for recapture…
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