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Haridas H, Kader AKA, Sellathurai A, Barz DPJ, Kontopoulou M. Noncovalent Functionalization of Graphene Nanoplatelets and Their Applications in Supercapacitors. ACS APPLIED MATERIALS & INTERFACES 2024; 16:16630-16640. [PMID: 38506515 DOI: 10.1021/acsami.3c18174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/21/2024]
Abstract
We demonstrate a simple noncovalent functionalization technique, which involves graphite exfoliation and subsequent coating of the resulting graphene nanoplatelets (GNPs) with trimellitic anhydride (TMA), using a thermomechanical exfoliation process. TMA adsorbs on the surface of the GNPs, resulting in a reduction of the specific surface area to 312 ± 9 m2/g compared to 410 ± 12 m2/g for the unmodified GNPs. Detailed imaging, thermogravimetric, and X-ray diffraction analysis showed that the modified GNPs (TMA-GNPs) maintain similar structure to the unmodified GNPs. The presence of functional groups, confirmed by X-ray photoelectron spectroscopy analysis, caused an increase in the surface energy from 45.6 mJ/m2 for the GNPs to 57.9 mJ/m2 for TMA-GNPs. The resulting coated TMA-GNPs form stable dispersions in water while maintaining their inherent conductive properties, thus enabling applications, such as the manufacture of conductive films and supercapacitors. As a proof-of-concept, electrodes for supercapacitors are prepared from concentrated aqueous dispersions of the functionalized GNPs. Electrochemical characterization of the supercapacitors using electrochemical impedance spectroscopy, cyclic voltammetry and galvanostatic charge/discharge tests showed a specific capacitance of 22.2 F/cm3 at a scan rate of 1 mV/s from cyclic voltammetry and 17.3 F/cm3 at a current density of 1 A/g from galvanostatic charge/discharge tests, with a 90% capacitance retention after 10,000 cycles.
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Affiliation(s)
- Haritha Haridas
- Department of Chemical Engineering, Graphene Integrated Functional Technologies (GIFT), Smith Engineering, Queen's University, Dupuis Hall, 19 Division Street, Kingston, Ontario K7L 3N6, Canada
| | - Arsath Kose Abdul Kader
- Department of Chemical Engineering, Graphene Integrated Functional Technologies (GIFT), Smith Engineering, Queen's University, Dupuis Hall, 19 Division Street, Kingston, Ontario K7L 3N6, Canada
| | - Andrew Sellathurai
- Department of Chemical Engineering, Graphene Integrated Functional Technologies (GIFT), Smith Engineering, Queen's University, Dupuis Hall, 19 Division Street, Kingston, Ontario K7L 3N6, Canada
| | - Dominik P J Barz
- Department of Chemical Engineering, Graphene Integrated Functional Technologies (GIFT), Smith Engineering, Queen's University, Dupuis Hall, 19 Division Street, Kingston, Ontario K7L 3N6, Canada
| | - Marianna Kontopoulou
- Department of Chemical Engineering, Graphene Integrated Functional Technologies (GIFT), Smith Engineering, Queen's University, Dupuis Hall, 19 Division Street, Kingston, Ontario K7L 3N6, Canada
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Visual observation and Numerical Studies of bubble formation of polypropylene chemical foaming system in the different injection foaming environment. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-03183-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Deng J, Liu M, Du Z, Zhang C, Wang H, Kong P, Zou W. Study on high energy absorption of spontaneous closed cell polyacrylate foam. POLYM ENG SCI 2022. [DOI: 10.1002/pen.25914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jingqian Deng
- Key Laboratory of Carbon Fiber and Functional Polymers Beijing University of Chemical Technology People's Republic of China
| | - Meng Liu
- Key Laboratory of Carbon Fiber and Functional Polymers Beijing University of Chemical Technology People's Republic of China
| | - Zhongjie Du
- Sinochem Petrochemical Distribution Co., Ltd Shanghai China
| | - Chen Zhang
- Key Laboratory of Carbon Fiber and Functional Polymers Beijing University of Chemical Technology People's Republic of China
| | - Hui Wang
- Unipoly (Shanghai) Performance Materials Co., Ltd, Shanghai People's Republic of China
| | - Peng Kong
- Key Laboratory of Carbon Fiber and Functional Polymers Beijing University of Chemical Technology People's Republic of China
| | - Wei Zou
- Key Laboratory of Carbon Fiber and Functional Polymers Beijing University of Chemical Technology People's Republic of China
- Changzhou Advanced Materials Research Institute Beijing University of Chemical Technology Jiangsu People's Republic of China
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Aghvami-Panah M, Panahi-Sarmad M, Seraji AA, Jamalpour S, Ghaffarian SR, Park CB. LDPE/MWCNT and LDPE/MWCNT/UHMWPE self-reinforced fiber-composite foams prepared via supercritical CO2: A microstructure-engineering property perspective. J Supercrit Fluids 2021. [DOI: 10.1016/j.supflu.2021.105248] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Ho QB, Kontopoulou M. Compatibilized polypropylene nanocomposites containing expanded graphite and graphene nanoplatelets. POLYM ENG SCI 2021. [DOI: 10.1002/pen.25647] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Quang Binh Ho
- Department of Chemical Engineering Dupuis Hall, Queen's University Kingston Ontario Canada
| | - Marianna Kontopoulou
- Department of Chemical Engineering Dupuis Hall, Queen's University Kingston Ontario Canada
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Li DL, Zhang L, Xu JK, Chen LN, Bao JB, Wang ZB. Eco-Friendly Strategy to Improve the Processiblity and Properties of Poly(vinyl alcohol) Foams Based on a 3D Hydrogen-Bond Network. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c02910] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- De-Long Li
- Ningbo Key Laboratory of Specialty Polymers, Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
| | - Li Zhang
- Ningbo Key Laboratory of Specialty Polymers, Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
| | - Jin-Ke Xu
- Ningbo Key Laboratory of Specialty Polymers, Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
| | - Li-Na Chen
- Ningbo Key Laboratory of Specialty Polymers, Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
| | - Jin-Biao Bao
- Ningbo Key Laboratory of Specialty Polymers, Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
| | - Zong-Bao Wang
- Ningbo Key Laboratory of Specialty Polymers, Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
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