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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Minakshi, Manickam
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (34/34 displayed)
- 2021Alginate biopolymer effect on the electrodeposition of manganese dioxide on electrodes for supercapacitorscitations
- 2021Suitable electrode materials for hybrid capacitors
- 2021High temperature (up to 1200 °C) thermal-mechanical stability of Si and Ni doped CrN framework coatingscitations
- 2020Physico-chemical properties of CrMoN coatings - combined experimental and computational studiescitations
- 2020Traditional salt-in-water electrolyte vs. water-in-salt electrolyte with binary metal oxide for symmetric supercapacitors: Capacitive vs. faradaiccitations
- 2020Tuning the morphology and redox behaviour by varying the concentration of Fe in a CoNiFe ternary oxide heterostructure for hybrid devicescitations
- 2020Role of additives in electrochemical deposition of ternary metal oxide microspheres for supercapacitor applicationscitations
- 2020A hybrid electrochemical energy storage device using sustainable electrode materialscitations
- 2020Highly energetic and stable gadolinium/bismuth molybdate with a fast reactive species, redox mechanism of aqueous electrolytecitations
- 2019Facile synthesis of a nanoporous sea sponge architecture in a binary metal oxidecitations
- 2018A combined theoretical and experimental approach of a new ternary metal oxide in molybdate composite for hybrid energy storage capacitorscitations
- 2018Effect of oxidizer in the synthesis of NiO anchored nanostructure nickel molybdate for sodium-ion batterycitations
- 2017Effect of Transition Metal Cations on Stability Enhancement for Molybdate-Based Hybrid Supercapacitorcitations
- 2016Electrochemical synthesis of polyaniline cross-linked NiMoO4nanofibre dendrites for energy storage devicescitations
- 2016Tuning the redox properties of the nanostructured CoMoO4 electrode: Effects of surfactant content and synthesis temperaturecitations
- 2016Synthesis, structural and electrochemical properties of sodium nickel phosphate for energy storage devicescitations
- 2015Nanocomposite sodium transition metal phosphate prepared via combustion route for hybrid capacitor
- 2015Synthesis and characterization of manganese molybdate for symmetric capacitor applications
- 2015Dual effect of anionic surfactants in the electrodeposited MnO2 trafficking redox ions for energy storagecitations
- 2015Synthesis, and crystal and electronic structure of sodium metal phosphate for use as a hybrid capacitor in non-aqueous electrolytecitations
- 2015PEO nanocomposite polymer electrolyte for solid state symmetric capacitorscitations
- 2014Structural and electrochemical properties of nanocomposite polymer electrolyte for electrochemical devicescitations
- 2012High energy density rechargeable battery: Study of polyvinylpyrrolidone encapsulated MnO2 composite as cathode material
- 2012Polyvinylpyrrolidone assisted sol–gel route LiCo1/3Mn1/3Ni1/3PO4 composite cathode for aqueous rechargeable batterycitations
- 2012Role of structural defects in olivine cathodescitations
- 2011Characterization of alkaline-earth oxide additions to the MnO2 cathode in an aqueous secondary batterycitations
- 2011Synthesis and characterization of Li(Co0.5Ni0.5)PO4 cathode for Li-Ion aqueous battery applicationscitations
- 2010The effect of B4C addition to MnO2 in a cathode material for battery applicationscitations
- 2008Examining manganese dioxide electrode in KOH electrolyte using TEM techniquecitations
- 2007A study of lithium insertion into MnO2 containing TiS2 additive a battery material in aqueous LiOH solutioncitations
- 2007TEM investigation of MnO2 cathode containing TiS2 and its influence in aqueous lithium secondary batterycitations
- 2006Electrochemical behavior of anatase TiO2 in aqueous lithium hydroxide electrolytecitations
- 2006TEM characterization of MnO2 cathode in an aqueous lithium secondary battery
- 2006Electrochemistry of cathode materials in aqueous lithium hydroxide electrolyte
Places of action
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article
Synthesis, structural and electrochemical properties of sodium nickel phosphate for energy storage devices
Abstract
Electrochemical energy production and storage at large scale and low cost, is a critical bottleneck in renewable energy systems. Oxides and lithium transition metal phosphates have been researched for over two decades and many technologies based on them exist. Much less work has been done investigating the use of sodium phosphates for energy storage. In this work, the synthesis of sodium nickel phosphate at different temperatures is performed and its performance evaluated for supercapacitor applications. The electronic properties of polycrystalline NaNiPO4 polymorphs, triphylite and maricite, t- and m-NaNiPO4 are calculated by means of first-principle calculations based on spin-polarized Density Functional Theory (DFT). The structure and morphology of the polymorphs were characterized and validated experimentally and it is shown that the sodium nickel phosphate (NaNiPO4) exists in two different forms (triphylite and maricite), depending on the synthetic temperature (300–550 °C). The as-prepared and triphylite forms of NaNiPO4vs. activated carbon in 2 M NaOH exhibit the maximum specific capacitance of 125 F g−1 and 85 F g−1 respectively, at 1 A g−1; both having excellent cycling stability with retention of 99% capacity up to 2000 cycles. The maricite form showed 70 F g−1 with a significant drop in capacity after just 50 cycles. These results reveal that the synthesized triphylite showed a high performance energy density of 44 Wh kg−1 which is attributed to the hierarchical structure of the porous NaNiPO4 nanosheets. At a higher temperature (>400 °C) the maricite form of NaNiPO4 possesses a nanoplate-like (coarse and blocky) structure with a large skewing at the intermediate frequency that is not tolerant of cycling. Computed results for the sodium nickel phosphate polymorphs and the electrochemical experimental results are in good agreement.