Organic—Inorganic Hybrid Interfaces Enable the Preparation of Nitrogen-Doped Hollow Carbon Nanospheres as High-Performance Anodes for Lithium and Potassium-Ion Batteries

An abundant hollow nanostructure is crucial for fast Li+ and K+ diffusion paths sufficient electrolyte penetration, which creates a highly conductive network ionic electronic transport. In this study, we successfully developed molecular-bridge-linked, organic–inorganic hybrid interface that enables the preparation of in situ nitrogen-doped carbon nanospheres. Moreover, prepared HCNSs, with high nitrogen content up to 10.4%, feature homogeneous regular morphologies. The resulting HCNSs exhibit excellent lithium potassium storage properties when used as electrode materials. Specifically, HCNS-800 demonstrates stable reversible discharge capacity 642 mA h g−1 at 1000 after 500 cycles LIBs. Similarly, maintains 205 100 KIBs. coupled high-mass-loading LiFePO4 cathode design full cells, HCNS-800‖LiFePO4 cells provide specific 139 0.1 C. These results indicate HCNS has promising potential use high-energy environmentally sustainable lithium-based potassium-based batteries.