N-doped CNTs grafted on manganese oxide for enhanced rate performance of lithium-ion battery anodes

초록

A rational design strategy involving compositing with conductive materials is crucial in increasing the electrical conductivity and structural stability of anode materials for enhanced lithium-ion batteries. In this study, hierarchical N-doped carbon nanotubes (CNTs) grafted onto a manganese oxide anode for high-rate performance lithium-ion battery is prepared via a spray pyrolysis process, followed by catalytic chemical vapor deposition (CCVD). The uniformly grown N-doped CNTs on the surface of the manganese oxide anode significantly improve the electron transport without isolating the active material, resulting in excellent electrochemical performance. The optimized electrode exhibits a high discharge capacity of 349.8 mA h g-1 at 5 A g-1 and excellent cycling stability, maintaining 553.6 mA h g-1 after 1000 cycles at 1 A g-1. These results demonstrate the potential of the N-doped CNT-manganese oxide composites as high-performance anode materials for enhanced lithium-ion batteries.

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