Pseudocapacitance,typically occurring on the surface of the electrode material,plays a crucial role in improving the charge/discharge rate of sodium ion batteries(SIBs).In this work,N,S co-doped porous carbon microtub...Pseudocapacitance,typically occurring on the surface of the electrode material,plays a crucial role in improving the charge/discharge rate of sodium ion batteries(SIBs).In this work,N,S co-doped porous carbon microtubes(SNCTs)are prepared through modified in situ polymerization and subsequent annealing with sublimed sulphur in a nitrogen atmosphere.The one-dimensional porous hollow structure enhances the electrolyte penetration and shortens the sodium-ion diffusion pathway,while the N,S doping improves the electrical conductivity of carbon and offers excess reaction sites for sodium-ion storage.展开更多
基金support from the National Natural Science Foundation of China(51702056)the China Postdoctoral Science Foundation(2017M622902)are gratefully acknowledged.
文摘Pseudocapacitance,typically occurring on the surface of the electrode material,plays a crucial role in improving the charge/discharge rate of sodium ion batteries(SIBs).In this work,N,S co-doped porous carbon microtubes(SNCTs)are prepared through modified in situ polymerization and subsequent annealing with sublimed sulphur in a nitrogen atmosphere.The one-dimensional porous hollow structure enhances the electrolyte penetration and shortens the sodium-ion diffusion pathway,while the N,S doping improves the electrical conductivity of carbon and offers excess reaction sites for sodium-ion storage.
