Mesoporous nitrogen-doped carbon MnO2 multichannel nanotubes with high performance for Li-ion batteries

Lack of suitable ion channels and low electronic conductivity hinder MnO2 as an anode material for lithium-ion batteries. Multiple ion channels rapidly and selectively gate ion transport to maintain superior energy storage. We report a mesopomus N-doped C modified MnO2 hollow nanotube with multiple Li-ion transport channels. When used as Li-ion batteries anode, due to multichannel ion transport of mesoporous N-doped C modified MnO2, the diffusion coefficient of Li+ reaches similar to 10(-8) cm(2) s(-1). And the batteries show excellent specific capacity (as high as 468.4 mA h g(-1) at 5 A g(-1)), superior rate capability (the current density from 100 A g(-1) to 5 A g(-1)), good cycling ability (preserving similar to 92.5% capacity after 10000 cycles). Our multiple ion channels design contributes a novel idea for preparing outstanding comprehensive performance anode materials for lithium-ion batteries.

Automated summary

This study reports a mesoporous N-doped C modified MnO2 hollow nanotube with multiple Li-ion transport channels as an anode material for lithium-ion batteries. The batteries exhibit excellent specific capacity, rate capability, and cycling ability due to the multichannel ion transport effect.