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Cellulose-based air-cathode loaded by in-situ hydrothermally synthesized NiFe2O4 for Al-air battery: Influence of surface chemistry on the electrochemical performance

A. Shebl, AA. Nada, A. Opálek, A. Kleinová, AE. Andicsová, G. Taveri, M. Mrlik, J. Osička, H. Kaňková, Š. Nagy, M. Mičušík, J. Mosnáček

. 2025 ; 320 (Pt 3) : 145970. [pub] 20250712

Jazyk angličtina Země Nizozemsko

Typ dokumentu časopisecké články

Perzistentní odkaz   https://www.medvik.cz/link/bmc25022137

The influence of the cellulosic fabrics (CF) surface chemistry on hosting nickel ferrite (NF) and its application in Al-air battery was studied. CFs were modified with acrylate monomer bearing positively (COOCH2CH2N+(CH3)3Cl-) or negatively (-COO(CH2)3SO3K) charged functional groups at different degrees of graft-polymerization. NF was in-situ hydrothermally synthesized into the un/grafted-CF followed by in-situ polymerization of polyaniline (PANi) to enhance the electric conductivity nine orders of magnitude. This via altering the electron transport mechanism from the tunnelling to the variable-range hopping mechanism for CF-NF and PANied-CF-NF, respectively. XRD confirmed a single phase of Trevorite (NiFe2O4). SEM images showed a dense deposition of NF on the anionic fabrics and TEM images demonstrated the change of NF shape (nanorice - nanoctahedrons) and size (9-75 nm) as a function of the surface chemistry. Anionic ACs showed higher Ni+2 and Fe+3 uptake compared to the cationic ones as confirmed by ICP-OES and XPS. Cyclic voltammetry showed that NF reduced oxygen to water through 2 × 2 electron pathway. Electrochemical performance of ACs showed a good correlation with the NF content to an extent. Highest current density (4 mA/cm2) and discharge time (13.8 h) were obtained from anionic AC compared to 1.7-2.5 h for blank and cationized ACs, respectively.

Citace poskytuje Crossref.org

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$a Shebl, Ahmed $u Centre for Advanced Materials Application of the Slovak Academy of Sciences, Dubravska cesta 9, 845 11 Bratislava, Slovakia; Chemistry Department, Faculty of Science, Ain Shams University, Abbassia, Cairo, Egypt
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$a The influence of the cellulosic fabrics (CF) surface chemistry on hosting nickel ferrite (NF) and its application in Al-air battery was studied. CFs were modified with acrylate monomer bearing positively (COOCH2CH2N+(CH3)3Cl-) or negatively (-COO(CH2)3SO3K) charged functional groups at different degrees of graft-polymerization. NF was in-situ hydrothermally synthesized into the un/grafted-CF followed by in-situ polymerization of polyaniline (PANi) to enhance the electric conductivity nine orders of magnitude. This via altering the electron transport mechanism from the tunnelling to the variable-range hopping mechanism for CF-NF and PANied-CF-NF, respectively. XRD confirmed a single phase of Trevorite (NiFe2O4). SEM images showed a dense deposition of NF on the anionic fabrics and TEM images demonstrated the change of NF shape (nanorice - nanoctahedrons) and size (9-75 nm) as a function of the surface chemistry. Anionic ACs showed higher Ni+2 and Fe+3 uptake compared to the cationic ones as confirmed by ICP-OES and XPS. Cyclic voltammetry showed that NF reduced oxygen to water through 2 × 2 electron pathway. Electrochemical performance of ACs showed a good correlation with the NF content to an extent. Highest current density (4 mA/cm2) and discharge time (13.8 h) were obtained from anionic AC compared to 1.7-2.5 h for blank and cationized ACs, respectively.
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$a Nada, Ahmed Ali $u Centre for Advanced Materials Application of the Slovak Academy of Sciences, Dubravska cesta 9, 845 11 Bratislava, Slovakia; Pretreatment and Finishing of Cellulose Based Textiles Department, National Research Center, 12622 Giza, Egypt; Polymer Institute of the Slovak Academy of Sciences, Dubravska cesta 9, 845 41 Bratislava, Slovakia. Electronic address: ahmed.nada@savba.sk
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$a Opálek, Andrej $u Institute of Materials and Machine Mechanics of the Slovak Academy of Sciences, Dubravska cesta 9, 845 13 Bratislava, Slovakia
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$a Kleinová, Angela $u Polymer Institute of the Slovak Academy of Sciences, Dubravska cesta 9, 845 41 Bratislava, Slovakia
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$a Taveri, Gianmarco $u Centre for Advanced Materials Application of the Slovak Academy of Sciences, Dubravska cesta 9, 845 11 Bratislava, Slovakia
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$a Mrlik, Miroslav $u Centre of Polymer Systems, University Institute, Tomas Bata University in Zlín, Trida T. Bati 5678, 76001 Zlín, Czech Republic
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$a Kaňková, Hana $u Centre for Functional and Surface Functionalized Glass, Alexander Dubček University of Trenčín, Študentská 2, 911 50 Trenčín, Slovakia
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