Hierarchical Porous Nitrogen-Doped Carbon Nanosheets Derived from Silk for Ultrahigh-Capacity Battery Anodes and Supercapacitors
Abstract
Hierarchical porous nitrogen-doped carbon (HPNC) nanosheets (NS) have been prepared via simultaneous activation and graphitization of biomass-derived natural silk. The as-obtained HPNC-NS show favorable features for electrochemical energy storage such as high specific surface area (SBET: 2494 m(2)/g), high volume of hierarchical pores (2.28 cm(3)/g), nanosheet structures, rich N-doping (4.7%), and defects. With respect to the multiple synergistic effects of these features, a lithium-ion battery anode and a two-electrode-based supercapacitor have been prepared. A reversible lithium storage capacity of 1865 mA h/g has been reported, which is the highest for N-doped carbon anode materials to the best of our knowledge. The HPNC-NS supercapacitor's electrode in ionic liquid electrolytes exhibit a capacitance of 242 F/g and energy density of 102 W h/kg (48 W h/L), with high cycling life stability (9% loss after 10,000 cycles). Thus, a high-performance Li-ion battery and supercapacitors were successfully assembled for the same electrode material, which was obtained through a one-step and facile large-scale synthesis route. It is promising for next-generation hybrid energy storage and renewable delivery devices.
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The thermal conductivity of N-doped carbon-based composite PCMs gradually increased with increasing pyrolysis temperature, attributed to the synergistic effect of highly graphitic nitrogen and interconnected graphitized network carbon.
“The thermal conductivity of composite PCMs gradually increased with increasing pyrolysis temperature, which was attributed to the synergistic effect of highly graphitic nitrogen and interconnected graphitized network carbon.”
From Carbon-Based Composite Phase Change Materials for Thermal Energy Storage, Transfer, and Conversion (2021) · cites this paper as [198]
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- Authors
- Hou, J., Cao, C., Idrees, F., & Ma, X.
- Affiliations
- Beijing Institute of Technology (CN)
- Corresponding author
- Cao, Chuanbao
- Venue
- ACS Nano
- Publisher
- American Chemical Society (ACS)
- Published
- 2015-02-25
- Volume
- 9
- Issue
- 3
- Pages
- 2556-2564
- ISSN
- 1936-0851 (ISSN-L)
- 1936-086X
- OpenAlex
- W2093214835
- Cited by
- 1,529
- References
- 1
- Citations by year
- 2026: 32 · 2025: 63 · 2024: 83 · 2023: 97 · 2022: 121 · 2021: 152 · 2020: 204 · 2019: 226 · 2018: 188 · 2017: 187 · 2016: 135 · 2015: 41
- FWCI
- 60.08
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- ACS Nano (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Natural Science Foundation of China (50972017)
- Topics
- Physical Sciences › Materials Science › Electronic, Optical and Magnetic Materials › Supercapacitor Materials and Fabrication
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Advancements in Battery Materials
- Physical Sciences › Materials Science › Materials Chemistry › MXene and MAX Phase Materials
- Keywords
- nitrogen-doped carbon nanosheets, silk, hierarchical porous carbon, biomass-derived carbon, lithium-ion battery anodes, supercapacitors, ionic liquid electrolyte, hybrid energy storage, cycling stability, high surface area
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