As battery EVs are multiplying, the search for higher capacity lithium-ion batteries is more intense than ever. Silicon anodes hold promise but an intrinsic issue remains unsolved. High capacity comes with high volume change that invites premature mechanical failure. In addressing this challenge, Haro et al have found inspiration in an unlikely place: Roman aqueduct engineering. A nanoscale vault-like structure gives silicon anodes the sought-after combination of mechanical strength and room to expand during the charging cycle. PeakForce QNM measurements validate their model, showing a high 120 GPa modulus from arch action of the vaulted nanostructure.
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FEATURED BRUKER TECHNOLOGY:
Alternative Fuels, Anode Structure, Li-Ion Batteries, Fuel Cells, Nanoparticle Technology, Silicon Film, Solid Electrolyte Interfaces