Podcasts · The Hardware Podcast with Fexingo: Chips, Devices, and Electronics Engineering Conversations

How Chips Use On-Chip Capacitors for Energy Storage

16 Jul 2026 · 7:56 · S3 E115

In this episode of The Hardware Podcast, Lucas and Luna explore the emerging trend of integrating supercapacitors directly onto silicon chips for energy storage. They focus on a specific development from researchers at the University of California, Berkeley, who have demonstrated on-chip capacitors with energy densities up to 50 watt-hours per liter — comparable to thin-film batteries but with vastly faster charge-discharge cycles. The conversation covers how these devices use high-surface-area porous silicon and graphene layers to store charge electrostatically, bypassing the chemical reactions that limit battery lifespan. Lucas and Luna discuss potential applications in wireless sensors, implantable medical devices, and edge computing nodes where replacing a battery is impractical. They also touch on the manufacturing challenges of integrating capacitor fabrication with standard CMOS processes without compromising transistor performance. The episode closes with a reflection on whether on-chip energy storage could eventually eliminate the need for separate power components in many small electronic systems.

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