Self-limiting electropolymerization of ultrathin,pinhole-free poly(phenylene oxide) films on carbon nanosheets |
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| Affiliation: | 1. imec, Kapeldreef 75, Leuven B-3001, Belgium;2. KU Leuven-University of Leuven, Centre for Surface Chemistry and Catalysis, Faculty of Bioscience Engineering, Kasteelpark Arenberg 23 bus 2461, Leuven B-3001, Belgium;3. KU Leuven-University of Leuven, Department of Metallurgy and Materials Engineering (MTM), Kasteelpark Arenberg 44 bus 2450, Leuven B-3001, Belgium;1. Instituto de Ingeniería Electroquímica y Corrosión, (INIEC)—Universidad Nacional del Sur, Bahía Blanca, Argentina;2. Institute of Theoretical Chemistry, Ulm University, Ulm, Germany;3. Instituto de Física Enrique Gaviola (IFEG-CONICET)—Universidad Nacional de Córdoba, Córdoba, Argentina;4. INFIQC—Departamento de Matemática y Física Facultad de Ciencias Químicas—Universidad Nacional de Córdoba, Argentina;1. Key Laboratory of Biomass Chemical Engineering, Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, PR China;2. College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310035, PR China;3. Ocean College, Zhejiang University of Technology, Hangzhou 310014, PR China;1. State Key Laboratory of Fire Science, University of Science and Technology of China, Anhui 230026, PR China;2. USTC-CityU Joint Advanced Research Center, Suzhou Key Laboratory of Urban Public Safety, Suzhou Institute for Advanced Study, University of Science and Technology of China, Suzhou, Jiangsu 215123, PR China;3. Department of Architectural and Civil Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong;1. State Key Laboratory of Fire Science, University of Science and Technology of China, Anhui 230026, PR China;2. College of Environment and Resources, Fuzhou University, Fuzhou 350002, PR China;3. Institute of Environmental Materials and Applications, College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, PR China;4. Department of Physical science, University of California, Irvine, CA 92697, USA |
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| Abstract: | Poly(phenylene oxide) (PPO) is an electronically insulating, solid polymer film which can be prepared via electropolymerization of phenol on electronically conductive surfaces. The self-limiting nature of this reaction allows the formation of pinhole-free films with nanometer thickness on high aspect ratio micro- and nano-structured substrates. In this work, we investigated the electrodeposition of PPO on carbon nanosheets (CNS). The highly corrugated CNS morphology makes a perfect model substrate to study the conformal electrodeposition of PPO films for advanced energy storage devices based on three-dimensional large-area surfaces. Uniform PPO films of about 8 nm were successfully coated over CNS layers with area enhancements of over 200×. The films uniformly covered the CNS petals and were electronically insulating as confirmed from cyclic voltammetry tests in redox electrolyte solutions. These thin conformal PPO films are of interest for blockage of electronic leakage in supercapacitor applications or even as ion conducting buffer layers in lithium ion batteries. |
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