New method for designing tiny 3D materials could make fuel cells more efficient

 https://phys.org/news/2023-01-method-tiny-3d-materials-fuel.html

"chemical synthesis to grow hexagonal crystal–structured nickel branches on cubic crystal–structured cores to create 3D 10 to 20nm hierarchical structures... high surface area, high conductivity due to direct connection of metallic core and branches... surfaces can be chemically modified making it an ideal electrocatalyst support speeding up rate of oxygen evolution reaction, a crucial process in energy conversion... higher surface area means greater efficiency converting hydrogen into electricity"

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