Interlayer‐Expanded Titanate Hierarchical Hollow Spheres Embedded in Carbon Nanofibers for Enhanced Na Storage (Small 16/2022)

Sodium-Ion Capacitors In article number 2107890, Jieshan Qiu, Le Yu, and co-workers report the design of magnesium titanate hierarchical hollow spheres embedded in carbon nanofibers by electrospinning for sodium-ion capacitors (NICs). Three-dimensional conductive carbon framework together with the expanded interlayer spacing of titanate hierarchical hollow spheres via the pillared Mg2+ ions expose more active sites for fast kinetics and enable superior rate performance for the long-term cycling of the assembled NIC device.