Facile synthesis of 2D ultrathin and ultrahigh specific surface hierarchical porous carbon nanosheets for advanced energy storage

Yuechao Yao, Zunqin Xiao, Peng Liu, Shengjiao Zhang, Yuan Niu, Hongliang Wu, Shiyu Liu, Wenxuan Tu, Qi Luo, Muhammad Aurang Zeb Gul Sial, Shaozhong Zeng, Qi Zhang, Jizhao Zou, Xierong Zeng, Wenjing (Angela) Zhang*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Two dimensional (2D) porous carbon nanosheets (CNS) have attracted tremendous research interests in energy storage and conversion, such as supercapacitors (SCs) and lithium-sulfur batteries, because of their unique micromorphology, chemical stability and high specific surface area (SSA). Rational design and facile scalable synthesis of CNS with high SSA, low cost and ultrathin nanosheet structure is highly desired but hitherto remains a big challenge. Here, we report a novel synthesis method of 2D hierarchical porous CNS with ultrahigh SSA (2687 m2 g−1) and ultrathin structure by directly pyrolysing and activating a unique and abundant biomass sheet. The electrochemical characterisations show that the prepared CNS-4-1 materials as electrodes creates a good energy-storage capability, with the energy density being 91 Wh kg−1 for symmetric SCs in ionic liquids, which is the highest in the reported biomass-derived CNS materials for SCs applications so far. Besides, the CNS-5-1 also exhibits a high initial capacity of 1078 mAh g−1 at 0.1 C when it acted as a sulfur hosting material for lithium-sulfur batteries. More importantly, it also shows a 586 mAh g−1 reversible capacity and an approaching 100% coulombic efficiency after 500 cycles at a high rate of 1 C. These superior electrochemical properties of the CNS are mainly attributed to their unique 2D ultrathin nanosheet structure, large SSA, and reasonable hierarchical porous structure. This work not only provides a new strategy to fabricate the ultrathin CNS in large scale and low cost but also enlarges CNS materials potential applications in energy storage.

Original languageEnglish
JournalCarbon
Volume155
Pages (from-to)674-685
ISSN0008-6223
DOIs
Publication statusPublished - 2019

Keywords

  • Carbon nanosheets
  • High-performance
  • Lithium-sulfur batteries
  • Supercapacitors
  • Ultrahigh SSA

Cite this

Yao, Yuechao ; Xiao, Zunqin ; Liu, Peng ; Zhang, Shengjiao ; Niu, Yuan ; Wu, Hongliang ; Liu, Shiyu ; Tu, Wenxuan ; Luo, Qi ; Sial, Muhammad Aurang Zeb Gul ; Zeng, Shaozhong ; Zhang, Qi ; Zou, Jizhao ; Zeng, Xierong ; Zhang, Wenjing (Angela). / Facile synthesis of 2D ultrathin and ultrahigh specific surface hierarchical porous carbon nanosheets for advanced energy storage. In: Carbon. 2019 ; Vol. 155. pp. 674-685.
@article{9164f95993d34845b25fd0376b7284bb,
title = "Facile synthesis of 2D ultrathin and ultrahigh specific surface hierarchical porous carbon nanosheets for advanced energy storage",
abstract = "Two dimensional (2D) porous carbon nanosheets (CNS) have attracted tremendous research interests in energy storage and conversion, such as supercapacitors (SCs) and lithium-sulfur batteries, because of their unique micromorphology, chemical stability and high specific surface area (SSA). Rational design and facile scalable synthesis of CNS with high SSA, low cost and ultrathin nanosheet structure is highly desired but hitherto remains a big challenge. Here, we report a novel synthesis method of 2D hierarchical porous CNS with ultrahigh SSA (2687 m2 g−1) and ultrathin structure by directly pyrolysing and activating a unique and abundant biomass sheet. The electrochemical characterisations show that the prepared CNS-4-1 materials as electrodes creates a good energy-storage capability, with the energy density being 91 Wh kg−1 for symmetric SCs in ionic liquids, which is the highest in the reported biomass-derived CNS materials for SCs applications so far. Besides, the CNS-5-1 also exhibits a high initial capacity of 1078 mAh g−1 at 0.1 C when it acted as a sulfur hosting material for lithium-sulfur batteries. More importantly, it also shows a 586 mAh g−1 reversible capacity and an approaching 100{\%} coulombic efficiency after 500 cycles at a high rate of 1 C. These superior electrochemical properties of the CNS are mainly attributed to their unique 2D ultrathin nanosheet structure, large SSA, and reasonable hierarchical porous structure. This work not only provides a new strategy to fabricate the ultrathin CNS in large scale and low cost but also enlarges CNS materials potential applications in energy storage.",
keywords = "Carbon nanosheets, High-performance, Lithium-sulfur batteries, Supercapacitors, Ultrahigh SSA",
author = "Yuechao Yao and Zunqin Xiao and Peng Liu and Shengjiao Zhang and Yuan Niu and Hongliang Wu and Shiyu Liu and Wenxuan Tu and Qi Luo and Sial, {Muhammad Aurang Zeb Gul} and Shaozhong Zeng and Qi Zhang and Jizhao Zou and Xierong Zeng and Zhang, {Wenjing (Angela)}",
year = "2019",
doi = "10.1016/j.carbon.2019.09.010",
language = "English",
volume = "155",
pages = "674--685",
journal = "Carbon",
issn = "0008-6223",
publisher = "Pergamon Press",

}

Yao, Y, Xiao, Z, Liu, P, Zhang, S, Niu, Y, Wu, H, Liu, S, Tu, W, Luo, Q, Sial, MAZG, Zeng, S, Zhang, Q, Zou, J, Zeng, X & Zhang, WA 2019, 'Facile synthesis of 2D ultrathin and ultrahigh specific surface hierarchical porous carbon nanosheets for advanced energy storage', Carbon, vol. 155, pp. 674-685. https://doi.org/10.1016/j.carbon.2019.09.010

Facile synthesis of 2D ultrathin and ultrahigh specific surface hierarchical porous carbon nanosheets for advanced energy storage. / Yao, Yuechao; Xiao, Zunqin; Liu, Peng; Zhang, Shengjiao; Niu, Yuan; Wu, Hongliang; Liu, Shiyu; Tu, Wenxuan; Luo, Qi; Sial, Muhammad Aurang Zeb Gul; Zeng, Shaozhong; Zhang, Qi; Zou, Jizhao; Zeng, Xierong; Zhang, Wenjing (Angela).

In: Carbon, Vol. 155, 2019, p. 674-685.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Facile synthesis of 2D ultrathin and ultrahigh specific surface hierarchical porous carbon nanosheets for advanced energy storage

AU - Yao, Yuechao

AU - Xiao, Zunqin

AU - Liu, Peng

AU - Zhang, Shengjiao

AU - Niu, Yuan

AU - Wu, Hongliang

AU - Liu, Shiyu

AU - Tu, Wenxuan

AU - Luo, Qi

AU - Sial, Muhammad Aurang Zeb Gul

AU - Zeng, Shaozhong

AU - Zhang, Qi

AU - Zou, Jizhao

AU - Zeng, Xierong

AU - Zhang, Wenjing (Angela)

PY - 2019

Y1 - 2019

N2 - Two dimensional (2D) porous carbon nanosheets (CNS) have attracted tremendous research interests in energy storage and conversion, such as supercapacitors (SCs) and lithium-sulfur batteries, because of their unique micromorphology, chemical stability and high specific surface area (SSA). Rational design and facile scalable synthesis of CNS with high SSA, low cost and ultrathin nanosheet structure is highly desired but hitherto remains a big challenge. Here, we report a novel synthesis method of 2D hierarchical porous CNS with ultrahigh SSA (2687 m2 g−1) and ultrathin structure by directly pyrolysing and activating a unique and abundant biomass sheet. The electrochemical characterisations show that the prepared CNS-4-1 materials as electrodes creates a good energy-storage capability, with the energy density being 91 Wh kg−1 for symmetric SCs in ionic liquids, which is the highest in the reported biomass-derived CNS materials for SCs applications so far. Besides, the CNS-5-1 also exhibits a high initial capacity of 1078 mAh g−1 at 0.1 C when it acted as a sulfur hosting material for lithium-sulfur batteries. More importantly, it also shows a 586 mAh g−1 reversible capacity and an approaching 100% coulombic efficiency after 500 cycles at a high rate of 1 C. These superior electrochemical properties of the CNS are mainly attributed to their unique 2D ultrathin nanosheet structure, large SSA, and reasonable hierarchical porous structure. This work not only provides a new strategy to fabricate the ultrathin CNS in large scale and low cost but also enlarges CNS materials potential applications in energy storage.

AB - Two dimensional (2D) porous carbon nanosheets (CNS) have attracted tremendous research interests in energy storage and conversion, such as supercapacitors (SCs) and lithium-sulfur batteries, because of their unique micromorphology, chemical stability and high specific surface area (SSA). Rational design and facile scalable synthesis of CNS with high SSA, low cost and ultrathin nanosheet structure is highly desired but hitherto remains a big challenge. Here, we report a novel synthesis method of 2D hierarchical porous CNS with ultrahigh SSA (2687 m2 g−1) and ultrathin structure by directly pyrolysing and activating a unique and abundant biomass sheet. The electrochemical characterisations show that the prepared CNS-4-1 materials as electrodes creates a good energy-storage capability, with the energy density being 91 Wh kg−1 for symmetric SCs in ionic liquids, which is the highest in the reported biomass-derived CNS materials for SCs applications so far. Besides, the CNS-5-1 also exhibits a high initial capacity of 1078 mAh g−1 at 0.1 C when it acted as a sulfur hosting material for lithium-sulfur batteries. More importantly, it also shows a 586 mAh g−1 reversible capacity and an approaching 100% coulombic efficiency after 500 cycles at a high rate of 1 C. These superior electrochemical properties of the CNS are mainly attributed to their unique 2D ultrathin nanosheet structure, large SSA, and reasonable hierarchical porous structure. This work not only provides a new strategy to fabricate the ultrathin CNS in large scale and low cost but also enlarges CNS materials potential applications in energy storage.

KW - Carbon nanosheets

KW - High-performance

KW - Lithium-sulfur batteries

KW - Supercapacitors

KW - Ultrahigh SSA

U2 - 10.1016/j.carbon.2019.09.010

DO - 10.1016/j.carbon.2019.09.010

M3 - Journal article

VL - 155

SP - 674

EP - 685

JO - Carbon

JF - Carbon

SN - 0008-6223

ER -