Lignin‐derived carbon with pyridine N‐B doping and a nanosandwich structure for high and stable lithium storage
Fuente:
Wiley Open Access
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Artículo Open Access |
| Published: |
Wiley
2024
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1867005982235688960 |
|---|---|
| author | Dichao Wu Jiayuan Li Yuying Zhao Ao Wang Gaoyue Zhang Jianchun Jiang Mengmeng Fan Kang Sun |
| author_facet | Dichao Wu Jiayuan Li Yuying Zhao Ao Wang Gaoyue Zhang Jianchun Jiang Mengmeng Fan Kang Sun Dichao Wu Jiayuan Li Yuying Zhao Ao Wang Gaoyue Zhang Jianchun Jiang Mengmeng Fan Kang Sun |
| collection | Wiley Open Access |
| contents | Lignin‐derived carbon with pyridine N‐B doping and a nanosandwich structure for high and stable lithium storage Dichao Wu Jiayuan Li Yuying Zhao Ao Wang Gaoyue Zhang Jianchun Jiang Mengmeng Fan Kang Sun Carbon Energy AbstractBiomass‐derived carbon is a promising electrode material in energy storage devices. However, how to improve its low capacity and stability, and slow diffusion kinetics during lithium storage remains a challenge. In this research, we propose a “self‐assembly‐template” method to prepare B, N codoped porous carbon (BN‐C) with a nanosandwich structure and abundant pyridinic N‐B species. The nanosandwich structure can increase powder density and cycle stability by constructing a stable solid electrolyte interphase film, shortening the Li+ diffusion pathway, and accommodating volume expansion during repeated charging/discharging. The abundant pyridinic N‐B species can simultaneously promote the adsorption/desorption of Li+/PF6− and reduce the diffusion barrier. The BN‐C electrode showed a high lithium‐ion storage capacity of above 1140 mAh g−1 at 0.05 A g−1 and superior stability (96.5% retained after 2000 cycles). Moreover, owing to the synergistic effect of the nanosandwich structure and pyridinic N‐B species, the assembled symmetrical BN‐C//BN‐C full cell shows a high energy density of 234.7 W h kg−1, high power density of 39.38 kW kg−1, and excellent cycling stability, superior to most of the other cells reported in the literature. As the density functional theory simulation demonstrated, pyridinic N‐B shows enhanced adsorption activity for Li+ and PF6−, which promotes an increase in the capacity of the anode and cathode, respectively. Meanwhile, the relatively lower diffusion barrier of pyridinic N‐B promotes Li+ migration, resulting in good rate performance. Therefore, this study provides a new approach for the synergistic modulation of a nanostructure and an active site simultaneously to fabricate the carbon electrode material in energy storage devices. 10.1002/cey2.511 http://creativecommons.org/licenses/by/4.0/ |
| doi_str_mv | 10.1002/cey2.511 |
| format | Artículo Open Access |
| id | wiley_oa_10_1002_cey2_511 |
| institution | Wiley Open Access |
| license_str_mv | http://creativecommons.org/licenses/by/4.0/ |
| publishDate | 2024 |
| publisher | Wiley |
| record_format | wiley_oa |
| spellingShingle | Lignin‐derived carbon with pyridine N‐B doping and a nanosandwich structure for high and stable lithium storage Dichao Wu Jiayuan Li Yuying Zhao Ao Wang Gaoyue Zhang Jianchun Jiang Mengmeng Fan Kang Sun Carbon Energy Lignin‐derived carbon with pyridine N‐B doping and a nanosandwich structure for high and stable lithium storage Dichao Wu Jiayuan Li Yuying Zhao Ao Wang Gaoyue Zhang Jianchun Jiang Mengmeng Fan Kang Sun Carbon Energy AbstractBiomass‐derived carbon is a promising electrode material in energy storage devices. However, how to improve its low capacity and stability, and slow diffusion kinetics during lithium storage remains a challenge. In this research, we propose a “self‐assembly‐template” method to prepare B, N codoped porous carbon (BN‐C) with a nanosandwich structure and abundant pyridinic N‐B species. The nanosandwich structure can increase powder density and cycle stability by constructing a stable solid electrolyte interphase film, shortening the Li+ diffusion pathway, and accommodating volume expansion during repeated charging/discharging. The abundant pyridinic N‐B species can simultaneously promote the adsorption/desorption of Li+/PF6− and reduce the diffusion barrier. The BN‐C electrode showed a high lithium‐ion storage capacity of above 1140 mAh g−1 at 0.05 A g−1 and superior stability (96.5% retained after 2000 cycles). Moreover, owing to the synergistic effect of the nanosandwich structure and pyridinic N‐B species, the assembled symmetrical BN‐C//BN‐C full cell shows a high energy density of 234.7 W h kg−1, high power density of 39.38 kW kg−1, and excellent cycling stability, superior to most of the other cells reported in the literature. As the density functional theory simulation demonstrated, pyridinic N‐B shows enhanced adsorption activity for Li+ and PF6−, which promotes an increase in the capacity of the anode and cathode, respectively. Meanwhile, the relatively lower diffusion barrier of pyridinic N‐B promotes Li+ migration, resulting in good rate performance. Therefore, this study provides a new approach for the synergistic modulation of a nanostructure and an active site simultaneously to fabricate the carbon electrode material in energy storage devices. 10.1002/cey2.511 http://creativecommons.org/licenses/by/4.0/ |
| title | Lignin‐derived carbon with pyridine N‐B doping and a nanosandwich structure for high and stable lithium storage |
| topic | Carbon Energy |
| url | https://onlinelibrary.wiley.com/doi/10.1002/cey2.511 |