Novel approach to synthesize NiCo2S4 composite for high-performance supercapacitor application with different molar ratio of Ni and Co

Shinde, Surendra K.; Ramesh, Sivalingam; Bathula, Chinna; Ghodake, Gajanan; Kim, D.-Y.; Jagadale, Ajay D.; Kadam, Avinash A.; Waghmode, Duryodhan P.; Sreekanth, T.V.M.; Kim, Heung Soo; Nagajyothi, P.C.; Yadav, Hemraj M.

doi:10.1038/s41598-019-50165-5

Cited by 58 publications

(16 citation statements)

References 54 publications

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“…In recent years, CuCo 2 S 4 as electrode material has been found to have excellent electronic conductivity, good electrochemical stability, and higher conductivity when compared to its oxide counterparts. In addition, the synergistic effects due to the interaction between diverse metal compounds leads to an enhanced electrochemical energy storage performance, as compared with monometallic sulfides (Shinde et al, 2019). For example, Tian et al anchored CuCo 2 S 4 to graphene aerogel through solvent thermal reaction with 668 F·g −1 at 1A·g −1 .…”

Section: Introductionmentioning

confidence: 99%

Freestanding Needle Flower Structure CuCo2S4 on Carbon Cloth for Flexible High Energy Supercapacitors With the Gel Electrolyte

Xie

Wang

et al. 2020

Front. Chem.

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A facile hydrothermal approach was adopted to the direct synthesis of bimetallic sulfide (CuCo 2 S 4 ) on carbon cloth (CC) without binders for the supercapacitor's electrodes. A possible formation mechanism was proposed. The prepared bimetallic electrode exhibited a high specific capacitance (Csp) of 1,312 F·g −1 at 1 A·g −1 , and an excellent capacitance retention of 94% at 5 A·g −1 over 5,000 cycles. In addition, the asymmetric supercapacitor (CuCo 2 S 4 /CC//AC/CC) exhibited energy density (42.9 wh·kg −1 at 0.8 kW·kg −1 ) and outstanding cycle performance (80% initial capacity retention after 5,000 cycles at 10 A·g −1 ). It should be noted that the electrochemical performance of a supercapacitor device is quite stable at different bending angles. Two charged devices in series can light 28 red-colored LEDs (2.0 V) for 5 min. All of this serves to indicate the potentially high application value of CuCo 2 S 4 .

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Section: Introductionmentioning

confidence: 99%

Freestanding Needle Flower Structure CuCo2S4 on Carbon Cloth for Flexible High Energy Supercapacitors With the Gel Electrolyte

Xie

Wang

et al. 2020

Front. Chem.

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“… 53 , 54 The high specific capacitance of cathode-3 could be attributed to the honeycomb nanosheets (∼10 nm in thickness; see Figure 2 c) providing a higher specific surface area, abundant electroactive sites, and open channels that enhance the contact area between the electrolyte and electrode to improve the diffusion of electrolyte ions into the entire surface of the material. 55 Thus, the effects of Co species should be for both morphological and electrochemical aspects.…”

Section: Resultsmentioning

confidence: 99%

“…Cathode-3 exhibited the highest specific capacitance (1800 F g –1 ) compared to cathode-1 (890 F g –1 ), cathode-2 (1200 F g –1 ), and cathode-4 (1400 F g –1 ). Considering the theoretical specific capacitance of the components (3650 F g –1 for Co 3 O 4 , 2584 F g –1 for NiO 2 , and 1370 F g –1 for MnO 2 ), cathode-3 was half pure Co 3 O 4 , which was rather effective as the active material in the pseudocapacitor. , The high specific capacitance of cathode-3 could be attributed to the honeycomb nanosheets (∼10 nm in thickness; see Figure c) providing a higher specific surface area, abundant electroactive sites, and open channels that enhance the contact area between the electrolyte and electrode to improve the diffusion of electrolyte ions into the entire surface of the material . Thus, the effects of Co species should be for both morphological and electrochemical aspects.…”

Section: Resultsmentioning

confidence: 99%

Simultaneous Electrodeposition of Ternary Metal Oxide Nanocomposites for High-Efficiency Supercapacitor Applications

Abebe

Ujihara

2022

ACS Omega

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Complex oxides and hydroxides of Ni, Co, and Mn from a precursor mixture were electrochemically deposited on both a cathode and an anode. On the Ni foam cathode, the complex metal hydroxides precipitated as nanolayers at −0.9 V. Simultaneously, the metal ions were oxidized and deposited as blocks on the Ni foam anode. While the concentrations of Ni(NO 3 ) 2 and Mn(NO 3 ) 2 were constant (80 mM for Ni 2+ and 40 mM for Mn 2+ , respectively), the concentration of Co(NO 3 ) 2 was varied from 20 to 120 mM, which affected the morphology and electrochemical properties of the electrode: a Co:Ni:Mn molar ratio resulted in the highest specific capacitance (at a scan rate of 5 mV s –1 , 1800 F g –1 for the cathode material and 720 F g –1 for the anode material). This cathode material was assembled into symmetric supercapacitors, which demonstrated an excellent energy density of 39 Wh kg –1 at a power density of 1300 W kg –1 and a high capacitance retention of 90% after 3000 charge/discharge cycles. This high electrochemical performance was attributed to the optimized ratio of metal oxides, and this simple preparation strategy can be applied to other nanocomposites of complex metal oxides/hydroxides with desired characteristics for various applications.

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“…Batteries can provide a higher energy density; however, the rate capability of the batteries is kinetically limited by the slow redox processes and the slow ion transfer through the electrode-active materials; thus, the power density of batteries is usually poor. The energy-storage mechanisms of the Sc involve two-step processes: the first is related to the electrochemical double-layer capacitance (EDLC) based on the physical adsorption of charges at the solid-liquid interface and the second is associated with the pseudocapacitance based on the redox reaction on the surface of electrode materials [2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

MOFs-Graphene Composites Synthesis and Application for Electrochemical Supercapacitor: A Review

et al. 2022

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Today’s world requires high-performance energy storage devices such as hybrid supercapacitors (HSc), which play an important role in the modern electronic market because supercapacitors (Sc) show better electrical properties for electronics devices. In the last few years, the scientific community has focused on the coupling of Sc and battery-type materials to improve energy and power density. Recently, various hybrid electrode materials have been reported in the literature; out of these, coordination polymers such as metal-organic frameworks (MOFs) are highly porous, stable, and widely explored for various applications. The poor conductivity of classical MOFs restricts their applications. The composite of MOFs with highly porous graphene (G), graphene oxide (GO), or reduced graphene oxide (rGO) nanomaterials is a promising strategy in the field of electrochemical applications. In this review, we have discussed the strategy, device structure, and function of the MOFs/G, MOFs/GO, and MOFs/rGO nanocomposites on Sc. The structural, morphological, and electrochemical performance of coordination polymers composites towards Sc application has been discussed. The reported results indicate the considerable improvement in the structural, surface morphological, and electrochemical performance of the Sc due to their positive synergistic effect. Finally, we focused on the recent development in preparation methods optimization, and the opportunities for MOFs/G based nanomaterials as electrode materials for energy storage applications have been discussed in detail.

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Novel approach to synthesize NiCo2S4 composite for high-performance supercapacitor application with different molar ratio of Ni and Co

Cited by 58 publications

References 54 publications

Freestanding Needle Flower Structure CuCo2S4 on Carbon Cloth for Flexible High Energy Supercapacitors With the Gel Electrolyte

Freestanding Needle Flower Structure CuCo2S4 on Carbon Cloth for Flexible High Energy Supercapacitors With the Gel Electrolyte

Simultaneous Electrodeposition of Ternary Metal Oxide Nanocomposites for High-Efficiency Supercapacitor Applications

MOFs-Graphene Composites Synthesis and Application for Electrochemical Supercapacitor: A Review

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