Fabrication of fullerene-supported La2O3–C60 nanocomposites: dual-functional materials for photocatalysis and supercapacitor electrodes

Munwar, Tauseef; Sardar, Sonia; Mukhtar, Faisal; Nadeem, Muhammad; Manzoor, Sumaira; Ashiq, Muhammad Naeem; Al-Ghamdi, Sami G.; Koç, Muammer; Iqbal, Faisal

doi:10.1039/d2cp05357h

Cited by 28 publications

(9 citation statements)

References 87 publications

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“…Specific capacitance was calculated from the discharge components of GCD curves and calculated capacitances at different current densities is shown in Fig. 7 c. It was observed that similar to Co and Ni samples, drop in capacitance was observed for CoNi when current density was increased this can be due to the diffusion and penetration of electrolyte solution’s ions at much higher current densities 40 – 42 . However, it can be witnessed that CoNi based active material displayed excellent capacity retention at higher current densities where specific capacitance value dropped moderately from around 176 F/g at current density of 1 A/g to around 122 F/g when current density was increased by around ten times to 10 A/g.…”

Section: Resultsmentioning

confidence: 92%

Engineering of nickel, cobalt oxides and nickel/cobalt binary oxides by electrodeposition and application as binder free electrodes in supercapacitors

Abbas,

Khurshid,

Yoosuf

et al. 2023

Sci Rep

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Cobalt oxide, nickel oxide and cobalt/nickel binary oxides were synthesised by electrodeposition. To fine tune composition of CoNi alloys, growth parameters including voltage, electrolyte pH/concentration and deposition time were varied. These produced nanomaterials were used as binder free electrodes in supercapacitor cells and tested using three electrode setup in 2 MKOH aqueous electrolyte. Cyclic voltammetry and galvanostatic charge/discharge were used at different scan rates (5–100 mV/s) and current densities (1–10 A/g) respectively to investigate the capacitive behaviour and measure the capacitance of active material. Electrochemical impedance spectroscopy was used to analyse the resistive/conductive behaviours of these electrodes in frequency range of 100 kHz to 0.01 Hz at applied voltage of 10 mV. Binary oxide electrode displayed superior electrochemical performance with the specific capacitance of 176 F/g at current density of 1 A/g. This hybrid electrode also displayed capacitance retention of over 83% after 5000 charge/discharge cycles. Cell displayed low solution resistance of 0.35 Ω along with good conductivity. The proposed facile approach to synthesise binder free blended metal electrodes can result in enhanced redox activity of pseudocapacitive materials. Consequently, fine tuning of these materials by controlling the cobalt and nickel contents can assist in broadening their applications in electrochemical energy storage in general and in supercapacitors in particular.

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Section: Resultsmentioning

confidence: 92%

Engineering of nickel, cobalt oxides and nickel/cobalt binary oxides by electrodeposition and application as binder free electrodes in supercapacitors

Abbas,

Khurshid,

Yoosuf

et al. 2023

Sci Rep

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show abstract

“…7 (c). It was observed that similar to Co and Ni samples, drop in capacitance was observed for CoNi when current density was increased this can be due to the diffusion and penetration of electrolyte solution's ions at much higher current densities [33][34][35] . However, it can be witnessed that CoNi based active material displayed excellent capacity retention at higher current densities where speci c capacity value dropped moderately from around 176F/g at current density of 1A/g to around 122F/g when current density was increased by around ten times to 10 A/g.…”

mentioning

confidence: 83%

Engineering of Nickel, Cobalt Oxides and Nickel/Cobalt Binary Oxides by Electrodeposition and Application as Binder Free Electrodes in Supercapacitors

Abbas

Khurshid

Yoosuf

et al. 2023

Preprint

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Cobalt oxide, nickel oxide and cobalt/nickel binary oxides were synthesised by electrodeposition. To fine tune composition of CoNi alloys, growth parameters including voltage, electrolyte pH/concentration and deposition time were varied. These produced nanomaterials were used as binder free electrodes in supercapacitor cells and tested using three electrode setup in 2M KOH aqueous electrolyte. Cyclic voltammetry and galvanostatic charge/discharge were used at different scan rates (5-100mV/s) and current densities (1-10A/g) respectively to evaluate the capacitive performance. Electrochemical impedance spectroscopy was used to analyse the resistive behaviour of these electrodes in frequency range of 100kHz to 0.01Hz at applied voltage of 10mV. Binary oxide electrode displayed superior electrochemical performance with the specific capacitance of 176F/g at current density of 1A/g. This hybrid electrode also displayed capacity retention of over 83% after 5,000 charge/discharge cycles. Cell displayed low solution resistance of 0.35Ω along with high energy density of 29Wh/kg at power density of 733W/kg for CoNi composite. The proposed facile approach to synthesise binder free blended metal electrodes can result in enhanced redox activity of pseudocapacitive materials. Consequently, fine tuning of these materials by controlling the cobalt and nickel ratios can assist in broadening their applications in electrochemical energy storage in supercapacitors.

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“…In 2023, Iqbal and co‐workers fabricated dual‐functional La 2 O 3 –C 60 nanocomposites for photocatalysts and electrode material for supercapacitors. [ 254 ] Thanks to the lower energy band gap, presence of deep‐level emissions, and lower recombination rate of photogenerated charge carriers compared to bare La 2 O 3 , the composites exhibited enhanced photocatalytic activity, as well as improved specific capacitance, outstanding energy density, and excellent stability for up to 5000 cycles in a 1 m KOH electrolyte.…”

Section: Carbon‐based Electrodes For Supercapacitorsmentioning

confidence: 99%

Recent Advances in Carbon‐Based Electrodes for Energy Storage and Conversion

et al. 2023

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Carbon-based nanomaterials, including graphene, fullerenes, and carbon nanotubes, are attracting significant attention as promising materials for next-generation energy storage and conversion applications. They possess unique physicochemical properties, such as structural stability and flexibility, high porosity, and tunable physicochemical features, which render them well suited in these hot research fields. Technological advances at atomic and electronic levels are crucial for developing more efficient and durable devices. This comprehensive review provides a state-of-the-art overview of these advanced carbon-based nanomaterials for various energy storage and conversion applications, focusing on supercapacitors, lithium as well as sodium-ion batteries, and hydrogen evolution reactions. Particular emphasis is placed on the strategies employed to enhance performance through nonmetallic elemental doping of N, B, S, and P in either individual doping or codoping, as well as structural modifications such as the creation of defect sites, edge functionalization, and inter-layer distance manipulation, aiming to provide the general guidelines for designing these devices by the above approaches to achieve optimal performance. Furthermore, this review delves into the challenges and future prospects for the advancement of carbon-based electrodes in energy storage and conversion.

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Fabrication of fullerene-supported La₂O₃–C₆₀ nanocomposites: dual-functional materials for photocatalysis and supercapacitor electrodes

Abstract: Nowadays, water pollution and energy crises worldwide force researchers to develop multi-functional and highly efficient nanomaterials. In this scenario, the present work reports dual-functional core-shell La2O3@C60 nanocomposite synthesized via the...

Cited by 28 publications

References 87 publications

Engineering of nickel, cobalt oxides and nickel/cobalt binary oxides by electrodeposition and application as binder free electrodes in supercapacitors

Engineering of nickel, cobalt oxides and nickel/cobalt binary oxides by electrodeposition and application as binder free electrodes in supercapacitors

Engineering of Nickel, Cobalt Oxides and Nickel/Cobalt Binary Oxides by Electrodeposition and Application as Binder Free Electrodes in Supercapacitors

Recent Advances in Carbon‐Based Electrodes for Energy Storage and Conversion

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