Inside Cover: Delicate Control on the Shell Structure of Hollow Spheres Enables Tunable Mass Transport in Water Splitting (Angew. Chem. Int. Ed. 13/2021)

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Delicate control of the shell structure of hollow spheres leads to enhanced mass transport, as described by Dan Wang and co-workers in their Research Article on page 6926. The prepared hollow multishell structures (HoMSs) with close duplicated shells (yellow) and bubble-like shells (green) can promote gas release owing to the unbalanced Laplace pressure and accelerate liquid transfer for the enhanced capillary force compared to the HoMSs with non-duplicated solid shells (red), thus exhibiting superior electrocatalytic performance.