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The exceptional structure of metal–organic frameworks (MOFs) makes them 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 MOF 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 the electrochemical performance. Mn2SnO4@C exhibits a specific capacity of 608.3 mAh g–1 after 150 cycles at 0.1 A g–1 and maintains a specific capacity of 179.2 mAh 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 44.5 mAh g–1 at 2 A g–1. The inheritance of MOF structures has effectively enhanced the performance of materials and devices while also providing new strategies for structural optimization of materials.
Jiao et al. (Thu,) studied this question.