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Nitrogen-doped three-dimensional porous carbon anode derived from hard halloysite template for sodium-ion batteries
https://orcid.org/0000-0003-0391-7159
https://orcid.org/0000-0002-6505-8196
https://orcid.org/0000-0002-3097-2850
Abstract Halloysite nanotubes were investigated as a hard template for the preparation of multi-functional porous carbon due to their one-dimensional ordered structures and the composition of aluminosilicate. Herein, a novel N-doped three-dimensional porous carbon nanofiber (3D PCN) was obtained following electrospinning, pyrolysis and demineralization of natural halloysite. When used as anodes in Na+-batteries, the obtained 3D PCN exhibited a high specific capacity of 266 mAh·g−1 at a current density of 100 mA·g−1 and super cycling stability with a capacity retention of 91.1% after 5000 cycles at 1 A·g−1. This work can not only extend the application of halloysite in energy storage but also provide a low-cost and promising three-dimensional porous carbon material for advanced Na+ batteries.
Graphical abstract Display Omitted
Highlights Natural halloysite was used as a template to prepare the N-doped porous carbon. The 3D conductive carbon network could offer fast electronic transport. The porous carbon anode had excellent long-cycle performance for Na+ batteries.
Nitrogen-doped three-dimensional porous carbon anode derived from hard halloysite template for sodium-ion batteries
https://orcid.org/0000-0003-0391-7159
https://orcid.org/0000-0002-6505-8196
https://orcid.org/0000-0002-3097-2850
Abstract Halloysite nanotubes were investigated as a hard template for the preparation of multi-functional porous carbon due to their one-dimensional ordered structures and the composition of aluminosilicate. Herein, a novel N-doped three-dimensional porous carbon nanofiber (3D PCN) was obtained following electrospinning, pyrolysis and demineralization of natural halloysite. When used as anodes in Na+-batteries, the obtained 3D PCN exhibited a high specific capacity of 266 mAh·g−1 at a current density of 100 mA·g−1 and super cycling stability with a capacity retention of 91.1% after 5000 cycles at 1 A·g−1. This work can not only extend the application of halloysite in energy storage but also provide a low-cost and promising three-dimensional porous carbon material for advanced Na+ batteries.
Graphical abstract Display Omitted
Highlights Natural halloysite was used as a template to prepare the N-doped porous carbon. The 3D conductive carbon network could offer fast electronic transport. The porous carbon anode had excellent long-cycle performance for Na+ batteries.
Nitrogen-doped three-dimensional porous carbon anode derived from hard halloysite template for sodium-ion batteries
https://orcid.org/0000-0003-0391-7159
https://orcid.org/0000-0002-6505-8196
https://orcid.org/0000-0002-3097-2850
Abstract Halloysite nanotubes were investigated as a hard template for the preparation of multi-functional porous carbon due to their one-dimensional ordered structures and the composition of aluminosilicate. Herein, a novel N-doped three-dimensional porous carbon nanofiber (3D PCN) was obtained following electrospinning, pyrolysis and demineralization of natural halloysite. When used as anodes in Na+-batteries, the obtained 3D PCN exhibited a high specific capacity of 266 mAh·g−1 at a current density of 100 mA·g−1 and super cycling stability with a capacity retention of 91.1% after 5000 cycles at 1 A·g−1. This work can not only extend the application of halloysite in energy storage but also provide a low-cost and promising three-dimensional porous carbon material for advanced Na+ batteries.
Graphical abstract Display Omitted
Highlights Natural halloysite was used as a template to prepare the N-doped porous carbon. The 3D conductive carbon network could offer fast electronic transport. The porous carbon anode had excellent long-cycle performance for Na+ batteries.
Nitrogen-doped three-dimensional porous carbon anode derived from hard halloysite template for sodium-ion batteries
Zhang, Qiang (author) / Zhang, Yi (author) / Liu, Sainan (author) / Yang, Huaming (author)
Applied Clay Science ; 200
2020-10-30
Article (Journal)
Electronic Resource
English
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