Structural optimization of rod-like Mn2SnO4@C derived from MOFs as anode material for high-performance Li-ion storage

The exceptional structure of metal-organic frameworks (MOFs) makes it a promising candidate for energy storage. One strategy for optimizing electrode materials involves incorporating similar structures into other materials. In this study, rod-shaped Mn2SnO4@C was synthesized using rod-shaped metal-organic framework Mn-BTC as a precursor with Sn source regulation. The rod-shaped structure effectively increases the contact area with the electrolyte and shortens the ion transport distance, thereby enhancing electrochemical performance. Mn2SnO4@C exhibits a specific capacity of 608.3mAh g-1 after 150 cycles at 0.1 A g-1, and maintains a specific capacity of 179.2mAh g-1 even after 2000 cycles at 1 A g-1. The Mn2SnO4@C//AC lithium-ion capacitor assembled with Mn2SnO4@C as the anode exhibits a maximum energy density of 124.7 Wh kg-1 and a maximum power density of 20,000 W kg-1, achieving a maximum specific capacity of 44.5mAh g-1 at 2 A g-1. The inheritance of metal-organic framework structures has effectively enhanced the performance of materials and devices, while also providing new strategies for structural optimization of materials.