Electrodeposited Nickel Cobalt Manganese based mixed sulfide nanosheets for high performance supercapacitor application

Sahoo, Surjit; Mondal, Rajat; Late, Dattatray J.; Rout, Chandra Sekhar

doi:10.1016/j.micromeso.2017.02.043

Cited by 119 publications

(56 citation statements)

References 55 publications

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“…In addition, the rate performance of bare (AVO, KVO, and NVO) devices was studied by monitoring the capacitance deviations of the device with respect to different scan rates. [65] On comparing bare and heat-treated AVO, KVO and NVO samples, the bare devices exhibited a prolonged charge/discharge time indicating excellent electrochemical performance than that of heat-treated sample devices, which is consistence with those observed in CV analysis. Meanwhile, at high scan rate, the process of intercalation/deintercalation was too fast and the utilization of active material surface was restricted, so the specific capacitance value tends to decrease.…”

Section: Wwwadvmatinterfacesdesupporting

confidence: 62%

Vanadium Pentoxide with H₂O, K⁺, and Na⁺ Spacer between Layered Nanostructures for High‐Performance Symmetric Electrochemical Capacitors

Manikandan

Raj

Rajesh

et al. 2018

Adv Materials Inter

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batteries and the power density similar to the electric double-layer capacitors. [1][2][3][4] Generally, the transition metal oxides and conducting polymers are used as the pseudocapacitor electrode materials, [3] since it stores electric charges based on the Faradaic and non-Faradaic reactions arising at the interface of electrode/electrolyte. [5] Several transition metal oxides, metal sulfides, and metal hydroxides have been displayed to be appropriate for the electrodes of supercapacitors. [6] Mostly, transition metal oxides (e.g., RuO 2 , MnO 2 , NiO, and V 2 O 5 ) are widely utilized as the electrode material to attain pseudocapacitive energy storage property due to their multivalence oxidation states. [7] Among the various metal oxides, vanadium pentoxide (V 2 O 5 ) is reflected to be the most capable candidate for pseudocapacitor owing to its natural abundance and existence of variable oxidation states from +2 to +5 (VO, V 2 O 3 , VO 2 , and V 2 O 5 ). [8] In addition, V 2 O 5 possess a higher theoretical capacitance value of ≈2120 F g −1 under a considerable potential window of 1 V, and this is recognized to the higher oxidation state of vanadium to transfer more than one electron instantly. [9,10] So, vanadium pentoxide nanostructures have been the most regarded materials in various applications, [11] such as batteries, [12][13][14] supercapacitors, [15,16] catalyst, [17] optical switching, [18] and energy-saving devices. [19] In supercapacitors, apart from the electrical/electrochemical properties, the specific capacitance of vanadium oxide also depends upon the morphology and synthesis techniques. [20] Recently, different types of nanostructured V 2 O 5 such as nanowires, [21] nanoribbons, [22] nanorods, [23] nanoplatelets, [24] and nanobelts [25] have been applied for supercapacitor electrodes. [26] Moreover, various synthetic methods such as hydrothermal/solvothermal, thermal decomposition, chemical vapor deposition, microwave-assisted synthesis, and sol-gel [27,28] methods have been adopted for the fabrication of different forms of vanadium oxide nanostructures. Among various synthesis techniques, the hydrothermal method is a low-cost, environmentally friendly, and widely used technique for the development of inorganic nanostructures. The hydrothermal method is a scalable and simple method, retaining autoclaves at lower operational temperatures with Vanadium oxide 2D layered nanostructures with the hydrous form of potassium (K + ) and sodium (Na + ) are synthesized via hydrothermal reaction between VOSO 4 · xH 2 O and different persulfate oxidants ((NH 4 ) 2 S 2 O 8 , K 2 S 2 O 8 , and Na 2 S 2 O 8 ). The physicochemical characterization suggests that the synthesized V 2 O 5 · 3H 2 O nanostructures possess layered morphology with considerable amount of water molecules accommodated between the interlayer spacing of nanostructures. Moreover, samples obtained using K 2 S 2 O 8 and Na 2 S 2 O 8 oxidants have K + (6.41%) and Na + (0.38%) ions intercalated on the 2D nanostructure along with the water mole...

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Section: Wwwadvmatinterfacesdesupporting

confidence: 62%

Vanadium Pentoxide with H₂O, K⁺, and Na⁺ Spacer between Layered Nanostructures for High‐Performance Symmetric Electrochemical Capacitors

Manikandan

Raj

Rajesh

et al. 2018

Adv Materials Inter

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“…The Cu-MnS with 2PVP showed an exceptional area and higher current density values compared to the other electrodes, which indicates a rapid charge transfer rate and high capacitance at a scan rate of 5 mV s −1 (Figure 7b) [35]. Figure 7c shows the CV curves of the Cu-MnS with 2PVP at scan rates of 5, 15,25,35,45, and 50 mV s −1 . These curves indicate a rapid charge transfer rate with enhanced current density.…”

Section: Resultsmentioning

confidence: 94%

One-Pot Hydrothermal Synthesis of Novel Cu-MnS with PVP Cabbage-Like Nanostructures for High-Performance Supercapacitors

et al. 2018

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This paper reports the facile synthesis of a novel architecture of Cu-MnS with PVP, where the high theoretical capacitance of MnS, low-cost, and high electrical conductivity of Cu, as well as appreciable surface area with high thermal and mechanical conductivity of PVP, as a single entity to fabricate a high-performance electrode for supercapacitor. Benefiting from their unique structures, the Cu-MnS with 2PVP electrode materials show a high specific capacitance of 833.58 F g −1 at 1 A g −1 , reversibility for the charge/discharge process, which are much higher than that of the MnS-7 h, Cu-MnS, and Cu-MnS with 1 and 3PVP. The presence of an appropriate amount of PVP in Cu-MnS is favorable for improving the electrochemical performance of the electrode and the existence of Cu was inclined to enhance the electrical conductivity. The Cu-MnS with 2PVP electrode is a good reference for researchers to design and fabricate new electrode materials with enhanced capacitive performance.

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“…The current densities of 1, 3, 5, 8, 10, 20, 30 and 40 A g –1 in the figure are 1986, 1722, 1561, 1389, 1298, 1033, 796 and 539 F g –1 , respectively. Specific capacitance decreases with increasing current density because the material undergoes a slow redox reaction at high current densities …”

Section: Resultsmentioning

confidence: 99%

One‐Step Hydrothermal Synthesis of Carbon‐Coated Nickel–Copper Sulfide Nanoparticles for High‐Performance Asymmetric Supercapacitors

Zheng

Wang

et al. 2019

Eur J Inorg Chem

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The C@Ni0.9Cu0.1‐S supercapacitor electrode material with good electrochemical performance was successfully prepared by a simple hydrothermal method. C@Ni0.9Cu0.1‐S obtained by adding glucose has better electrochemical performance than single Ni0.9Cu0.1‐S. In this work, the electrochemical properties of C@Ni0.9Cu0.1‐S electrode materials and asymmetric supercapacitors were studied in detail. This single‐electrode specific capacity in the 6 M KOH solution reaches 1986 F g–1 and the potential window is 0 to 0.49 V. In order to increase the energy density and potential window of the supercapacitor, C@Ni0.9Cu0.1‐S is used as a positive electrode, and AC is used as a negative electrode to assemble asymmetric supercapacitors. The results show that the working voltage of C@Ni0.9Cu0.1‐S∥ AC asymmetric supercapacitor increases to 1.6 V, and the specific capacitance and energy density can reach 184.4 F g–1 and 65.6 Wh kg–1, respectively, and has excellent cycling stability. These excellent electrochemical properties indicate that C@Ni0.9Cu0.1‐S is a promising supercapacitor electrode material.

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Electrodeposited Nickel Cobalt Manganese based mixed sulfide nanosheets for high performance supercapacitor application

Cited by 119 publications

References 55 publications

Vanadium Pentoxide with H₂O, K⁺, and Na⁺ Spacer between Layered Nanostructures for High‐Performance Symmetric Electrochemical Capacitors

Vanadium Pentoxide with H₂O, K⁺, and Na⁺ Spacer between Layered Nanostructures for High‐Performance Symmetric Electrochemical Capacitors

One-Pot Hydrothermal Synthesis of Novel Cu-MnS with PVP Cabbage-Like Nanostructures for High-Performance Supercapacitors

One‐Step Hydrothermal Synthesis of Carbon‐Coated Nickel–Copper Sulfide Nanoparticles for High‐Performance Asymmetric Supercapacitors

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Electrodeposited Nickel Cobalt Manganese based mixed sulfide nanosheets for high performance supercapacitor application

Cited by 119 publications

References 55 publications

Vanadium Pentoxide with H2O, K+, and Na+ Spacer between Layered Nanostructures for High‐Performance Symmetric Electrochemical Capacitors

Vanadium Pentoxide with H2O, K+, and Na+ Spacer between Layered Nanostructures for High‐Performance Symmetric Electrochemical Capacitors

One-Pot Hydrothermal Synthesis of Novel Cu-MnS with PVP Cabbage-Like Nanostructures for High-Performance Supercapacitors

One‐Step Hydrothermal Synthesis of Carbon‐Coated Nickel–Copper Sulfide Nanoparticles for High‐Performance Asymmetric Supercapacitors

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Vanadium Pentoxide with H₂O, K⁺, and Na⁺ Spacer between Layered Nanostructures for High‐Performance Symmetric Electrochemical Capacitors

Vanadium Pentoxide with H₂O, K⁺, and Na⁺ Spacer between Layered Nanostructures for High‐Performance Symmetric Electrochemical Capacitors