1
|
Askari MB, Salarizadeh P, Di Bartolomeo A, Şen F. Enhanced electrochemical performance of MnNi 2O 4/rGO nanocomposite as pseudocapacitor electrode material and methanol electro-oxidation catalyst. NANOTECHNOLOGY 2021; 32:325707. [PMID: 33946059 DOI: 10.1088/1361-6528/abfded] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Accepted: 05/04/2021] [Indexed: 06/12/2023]
Abstract
Binary transition metal oxides with encouraging electrocatalyst properties have been suggested as electrode materials for supercapacitors and methanol oxidation. Hence, in this work, a binary mixed metal oxide based on nickel and manganese (MnNi2O4) and its hybrid with reduced graphene oxide were synthesized by a one-step hydrothermal method. After physical and morphological characterization, the potential of these nanostructures was investigated for use as supercapacitor electrodes and methanol electro-oxidation. The results of the electrochemical analysis showed a substantial effect of adding rGO to the MnNi2O4. The MnNi2O4/rGO hybrid electrode supercapacitor exhibited good stability of 93% after 2000 consecutive CV cycles and a specific capacitance of 575 F g-1at the current density of 0.5 A g-1. Furthermore, the application of this hybrid nanomaterial in the methanol electro-oxidation reaction (MOR) indicated its appropriate electrochemical efficiency and stability in methanol oxidation. Our results show that MnNi2O4/rGO can be considered as a promising electrode material for energy applications.
Collapse
Affiliation(s)
- Mohammad Bagher Askari
- Department of Physics, Faculty of Science, University of Guilan, PO Box 41335-1914, Rasht, Iran
| | - Parisa Salarizadeh
- High-Temperature Fuel Cell Research Department, Vali-e-Asr University of Rafsanjan, Rafsanjan 1599637111, Iran
| | - Antonio Di Bartolomeo
- Department of Physics 'E. R. Caianiello' and 'Interdepartmental center NANOMATES', University of Salerno, I-84084, Fisciano, Salerno, Italy
| | - Fatih Şen
- Sen Research Group, Department of Biochemistry, University of Dumlupınar, 43000 Kütahya, Turkey
| |
Collapse
|
2
|
Esqueda-Barrón Y, Pérez Del Pino A, Lebière PG, Musheghyan-Avetisyan A, Bertran-Serra E, György E, Logofatu C. Boost of Charge Storage Performance of Graphene Nanowall Electrodes by Laser-Induced Crystallization of Metal Oxide Nanostructures. ACS APPLIED MATERIALS & INTERFACES 2021; 13:17957-17970. [PMID: 33843185 DOI: 10.1021/acsami.1c00951] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Major research efforts are being carried out for the technological advancement to an energetically sustainable society. However, for the full commercial integration of electrochemical energy storage devices, not only materials with higher performance should be designed and manufactured but also more competitive production techniques need to be developed. The laser processing technology is well extended at the industrial sector for the versatile and high throughput modification of a wide range of materials. In this work, a method based on laser processing is presented for the fabrication of hybrid electrodes composed of graphene nanowalls (GNWs) coated with different transition-metal oxide nanostructures for electrochemical capacitor (EC) applications. GNW/stainless steel electrodes grown by plasma enhanced chemical vapor deposition were decorated with metal oxide nanostructures by means of their laser surface processing while immersed in aqueous organometallic solutions. The pseudocapacitive nature of the laser-induced crystallized oxide materials prompted an increase of the GNW electrodes' capacitance by 3 orders of magnitude, up to ca. 28 F/cm3 at 10 mV/s, at both the positive and negative voltages. Finally, asymmetric aqueous and solid-state ECs revealed excellent stability upon tens of thousands of charge-discharge cycles.
Collapse
Affiliation(s)
- Yasmín Esqueda-Barrón
- Institute of Materials Science of Barcelona, ICMAB-CSIC, Campus UAB, 08193 Bellaterra, Spain
| | - Angel Pérez Del Pino
- Institute of Materials Science of Barcelona, ICMAB-CSIC, Campus UAB, 08193 Bellaterra, Spain
| | - Pablo García Lebière
- Institute of Materials Science of Barcelona, ICMAB-CSIC, Campus UAB, 08193 Bellaterra, Spain
| | - Arevik Musheghyan-Avetisyan
- Applied Physics Department, Barcelona University, Martí i Franquès, 1, 08028 Barcelona, Spain
- ENPHOCAMAT Group, Institute of Nanoscience and Nanotechnology of University of Barcelona (IN2UB), Martí i Franquès, 1, 08028 Barcelona, Spain
| | - Enric Bertran-Serra
- Applied Physics Department, Barcelona University, Martí i Franquès, 1, 08028 Barcelona, Spain
- ENPHOCAMAT Group, Institute of Nanoscience and Nanotechnology of University of Barcelona (IN2UB), Martí i Franquès, 1, 08028 Barcelona, Spain
| | - Enikö György
- Institute of Materials Science of Barcelona, ICMAB-CSIC, Campus UAB, 08193 Bellaterra, Spain
- National Institute for Laser, Plasma and Radiation Physics, P.O. Box MG 36, 77125 Bucharest, Romania
| | - Constantin Logofatu
- National Institute for Materials Physics, P.O. Box MG 7, 77125 Bucharest, Romania
| |
Collapse
|
3
|
Mesoporous Fe–Ni–Co ternary oxide nanoflake arrays on Ni foam for high-performance supercapacitor applications. J IND ENG CHEM 2018. [DOI: 10.1016/j.jiec.2018.02.014] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|