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Belal MA, Yousry R, Taulo G, AbdelHamid AA, Rashed AE, El-Moneim AA. Layer-by-Layer Inkjet-Printed Manganese Oxide Nanosheets on Graphene for High-Performance Flexible Supercapacitors. ACS APPLIED MATERIALS & INTERFACES 2023; 15:53632-53643. [PMID: 37957019 DOI: 10.1021/acsami.3c07339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2023]
Abstract
The widespread adoption of wearable, movable, and implantable smart devices has sparked the evolution of flexible, miniaturized power supplies. High-resolution inkjet printing of flexible microsupercapacitor (μSC) electrodes is a fast, inexpensive, and waste-free alternative manufacturing technology. In this work, a 2D birnessite-type manganese dioxide (δ-MnO2) water-based ink is used to print 10-25 layers of δ-MnO2 symmetrically on a preprinted interdigitated cell consisting of 10 layers of electrochemically exfoliated graphene (EEG). The cell with 10 printed layers of δ-MnO2 achieved the highest specific capacitance, energy density, and power density of 0.44 mF cm-2, 0.045 μW h cm-2, and 0.0012 mW cm-2, respectively. Since inkjet-printing technology supports μSC manufacturing with parallel/series connectivity, four cells were used to study and improve the potential window and capacitance that can be used to construct μSC arrays as power banks. This work provides the first approach for designing an inkjet-printed interdigitated hybrid cell based on δ-MnO2@EEG that could be a versatile candidate for the large-scale production of flexible and printable electronic devices for energy storage.
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Affiliation(s)
- Mohamed Ahmed Belal
- Graphene Center of Excellence, Energy and Electronics Applications, Egypt-Japan University of Science and Technology, New Borg El-Arab 21934, Egypt
| | - Reham Yousry
- Graphene Center of Excellence, Energy and Electronics Applications, Egypt-Japan University of Science and Technology, New Borg El-Arab 21934, Egypt
| | - Gracian Taulo
- Graphene Center of Excellence, Energy and Electronics Applications, Egypt-Japan University of Science and Technology, New Borg El-Arab 21934, Egypt
| | - Ayman A AbdelHamid
- Graphene Center of Excellence, Energy and Electronics Applications, Egypt-Japan University of Science and Technology, New Borg El-Arab 21934, Egypt
- Applied Chemistry Group, Department of Chemistry, College of Sciences, University of Sharjah, P.O. Box 27272, Sharjah 000, United Arab Emirates
| | - Ahmed Elsayed Rashed
- Graphene Center of Excellence, Energy and Electronics Applications, Egypt-Japan University of Science and Technology, New Borg El-Arab 21934, Egypt
- Environmental Sciences Department, Faculty of Science, Alexandria University, Alexandria 21511, Egypt
| | - Ahmed Abd El-Moneim
- Graphene Center of Excellence, Energy and Electronics Applications, Egypt-Japan University of Science and Technology, New Borg El-Arab 21934, Egypt
- School of Basic and Applied Science, Egypt-Japan University of Science and Technology, New Borg El Arab City, Alexandria 21934, Egypt
- Physical Chemistry Department, National Research Centre, El-Dokki, Cairo 12622, Egypt
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