Design and Synthesis of 3D Potassium-Ion Pre-Intercalated Graphene for Supercapacitors

Chang, Liang; Stacchiola, Dario J.; Hu, Yun Hang

doi:10.1021/acs.iecr.7b05413

Title: Design and Synthesis of 3D Potassium-Ion Pre-Intercalated Graphene for Supercapacitors

Abstract

Here in this paper, a novel material—3D potassium-ion preintercalated graphene—was designed and synthesized via one step using a new reaction between K and CO. Furthermore, this material exhibited excellent performance as electrodes for aqueous symmetrical supercapacitors. When the electrode was scaled up from 3.0 to 8.0 mg/cm², negligible capacitance degradation was observed, leading to a very high areal capacitance of 1.50 F/cm² at 1 A/g. Furthermore, even if a large operating temperature of -15 or 55 °C was employed, its excellent electrochemical performance remained with specific capacitances of 208 F/g at 55 °C, 184 F/g at 25 °C, and 98 F/g at -15 °C. This could be attributed to 3D structure and K+ preintercalation of the material, which provides rich active sites for electric double-layer formation, lower ion transport resistance, and shorter diffusion distance.

Authors:

Chang, Liang ^[1];

^[2];

^[3]

Michigan Technological Univ., Houghton, MI (United States). Dept. of Materials Science and Engineering
Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials (CFN)
Michigan Technological Univ., Houghton, MI (United States). Dept. of Materials Science and Engineering; Shanghai Jiao Tong Univ. (China). School of Environmental Science and Engineering

Publication Date:: 2018-02-22

Research Org.:: Brookhaven National Lab. (BNL), Upton, NY (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)

OSTI Identifier:: 1436450

Report Number(s):: BNL-203641-2018-JAAM
Journal ID: ISSN 0888-5885

Grant/Contract Number:: SC0012704

Resource Type:: Accepted Manuscript

Journal Name:: Industrial and Engineering Chemistry Research

Additional Journal Information:: Journal Volume: 57; Journal Issue: 10; Journal ID: ISSN 0888-5885

Publisher:: American Chemical Society (ACS)

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE

Citation Formats


                    Chang, Liang, Stacchiola, Dario J., and Hu, Yun Hang. Design and Synthesis of 3D Potassium-Ion Pre-Intercalated Graphene for Supercapacitors.  United States: N. p., 2018. 
Web.  doi:10.1021/acs.iecr.7b05413.

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                    Chang, Liang, Stacchiola, Dario J., & Hu, Yun Hang. Design and Synthesis of 3D Potassium-Ion Pre-Intercalated Graphene for Supercapacitors.  United States.  https://doi.org/10.1021/acs.iecr.7b05413

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                    Chang, Liang, Stacchiola, Dario J., and Hu, Yun Hang. Thu .  
"Design and Synthesis of 3D Potassium-Ion Pre-Intercalated Graphene for Supercapacitors".  United States.  https://doi.org/10.1021/acs.iecr.7b05413.  https://www.osti.gov/servlets/purl/1436450.

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@article{osti_1436450,

  title        = {Design and Synthesis of 3D Potassium-Ion Pre-Intercalated Graphene for Supercapacitors},

  author       = {Chang, Liang and Stacchiola, Dario J. and Hu, Yun Hang},

  abstractNote = {Here in this paper, a novel material—3D potassium-ion preintercalated graphene—was designed and synthesized via one step using a new reaction between K and CO. Furthermore, this material exhibited excellent performance as electrodes for aqueous symmetrical supercapacitors. When the electrode was scaled up from 3.0 to 8.0 mg/cm2, negligible capacitance degradation was observed, leading to a very high areal capacitance of 1.50 F/cm2 at 1 A/g. Furthermore, even if a large operating temperature of -15 or 55 °C was employed, its excellent electrochemical performance remained with specific capacitances of 208 F/g at 55 °C, 184 F/g at 25 °C, and 98 F/g at -15 °C. This could be attributed to 3D structure and K+ preintercalation of the material, which provides rich active sites for electric double-layer formation, lower ion transport resistance, and shorter diffusion distance.},

  doi          = {10.1021/acs.iecr.7b05413},

  journal      = {Industrial and Engineering Chemistry Research},

  number       = 10,

  volume       = 57,

  place        = {United States},

  year         = {2018},

  month        = {2}

}

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https://doi.org/10.1021/acs.iecr.7b05413

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Cited by: 15 works

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Figures / Tables:

Figure 1: 3D KIPIG characterization: (A and B) SEM images, (C) N₂ adsorption and desorption curves, and (D) its pore size distribution.

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